Merge the develop branch to the master branch, preparation to v2.7.0-rc1

Add oracle service for remote shutdown (#531 )
Fix monitor metrics (#533 )
2021-04-13 04:09:38 -06:00 · 2021-04-12 14:38:42 -06:00 · 2021-04-02 03:59:49 -06:00 · 2021-03-26 12:16:23 -06:00 · 2021-03-18 00:04:33 -06:00 · 2021-03-17 21:48:40 -06:00
175 changed files with 4993 additions and 3234 deletions
--- a/.dockerignore
+++ b/.dockerignore
@@ -8,11 +8,16 @@
 **/docs
 **/*.md

+monitor/**/*.env*
+oracle/**/*.env*
+!**/.env.example
+
 contracts/test
 contracts/build
 oracle/test
 monitor/test
 monitor/responses
+monitor/cache/*
 commons/test
 oracle/**/*.png
 oracle/**/*.jpg
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -19,9 +19,11 @@ jobs:
      - uses: actions/checkout@v2
        with:
          submodules: true
-      - run: git submodule status > submodule.status
-      - id: get_cache_key
-        run: echo "::set-output name=cache_key::cache-repo-${{ hashFiles('yarn.lock', 'package.json', 'submodule.status') }}"
+      - name: Set cache key
+        id: get_cache_key
+        run: |
+          git submodule status > submodule.status
+          echo "::set-output name=cache_key::cache-repo-${{ hashFiles('yarn.lock', 'package.json', 'submodule.status') }}"
      - uses: actions/cache@v2
        id: cache-repo
        with:
@@ -29,7 +31,8 @@ jobs:
            **/node_modules
            contracts/build
          key: ${{ steps.get_cache_key.outputs.cache_key }}
-      - if: ${{ !steps.cache-repo.outputs.cache-hit }}
+      - name: Install dependencies and compile contracts
+        if: ${{ !steps.cache-repo.outputs.cache-hit }}
        run: |
          yarn install --frozen-lockfile
          yarn run install:deploy
@@ -56,7 +59,8 @@ jobs:
            **/node_modules
            contracts/build
          key: ${{ needs.initialize.outputs.cache_key }}
-      - run: ${{ steps.cache-repo.outputs.cache-hit }} && yarn run ${{ matrix.task }}
+      - name: yarn run ${{ matrix.task }}
+        run: ${{ steps.cache-repo.outputs.cache-hit }} && yarn run ${{ matrix.task }}
  ui-coverage:
    runs-on: ubuntu-latest
    needs:
@@ -76,7 +80,8 @@ jobs:
            **/node_modules
            contracts/build
          key: ${{ needs.initialize.outputs.cache_key }}
-      - run: ${{ steps.cache-repo.outputs.cache-hit }} && yarn workspace ui run coverage
+      - name: yarn workspace ui run coverage
+        run: ${{ steps.cache-repo.outputs.cache-hit }} && yarn workspace ui run coverage
      - uses: coverallsapp/github-action@master
        with:
          github-token: ${{ github.token }}
@@ -87,14 +92,16 @@ jobs:
      - uses: actions/checkout@v2
        with:
          submodules: true
-      - run: |
+      - name: Evaluate e2e docker images tags
+        run: |
          git submodule status > submodule.status
-          echo "::set-env name=E2E_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'Dockerfile.e2e', 'commons', 'oracle-e2e', 'monitor-e2e') }}"
-          echo "::set-env name=ORACLE_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'oracle') }}"
-          echo "::set-env name=MONITOR_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'monitor') }}"
-          echo "::set-env name=UI_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'ui') }}"
-          echo "::set-env name=ALM_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'alm') }}"
-      - run: |
+          echo "E2E_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'Dockerfile.e2e', 'commons', 'oracle-e2e', 'monitor-e2e') }}" >> $GITHUB_ENV
+          echo "ORACLE_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'oracle') }}" >> $GITHUB_ENV
+          echo "MONITOR_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'monitor') }}" >> $GITHUB_ENV
+          echo "UI_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'ui') }}" >> $GITHUB_ENV
+          echo "ALM_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'alm') }}" >> $GITHUB_ENV
+      - name: Rebuild and push updated images
+        run: |
          function check_if_image_exists() {
            curl -fsSlL -H 'Authorization: bearer ${{ github.token }}' "https://${DOCKER_REGISTRY}/v2/${DOCKER_REPO}/tokenbridge-e2e-$1/manifests/$2" > /dev/null
          }
@@ -119,8 +126,10 @@ jobs:
      - uses: actions/checkout@v2
        with:
          submodules: true
-      - run: echo "::set-env name=MOLECULE_RUNNER_TAG::${{ hashFiles('./deployment-e2e/Dockerfile') }}"
-      - run: |
+      - name: Evaluate e2e molecule runner tag
+        run: echo "MOLECULE_RUNNER_TAG=${{ hashFiles('./deployment-e2e/Dockerfile') }}" >> $GITHUB_ENV
+      - name: Rebuild and push molecule runner e2e image
+        run: |
          function check_if_image_exists() {
            curl -fsSlL -H 'Authorization: bearer ${{ github.token }}' "https://${DOCKER_REGISTRY}/v2/${DOCKER_REPO}/tokenbridge-e2e-$1/manifests/$2" > /dev/null
          }
@@ -150,14 +159,15 @@ jobs:
      - uses: actions/checkout@v2
        with:
          submodules: true
-      - run: |
+      - name: Evaluate e2e docker images tags
+        run: |
          git submodule status > submodule.status
-          echo "::set-env name=E2E_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'Dockerfile.e2e', 'commons', 'oracle-e2e', 'monitor-e2e') }}"
-          echo "::set-env name=ORACLE_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'oracle') }}"
-          echo "::set-env name=MONITOR_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'monitor') }}"
-          echo "::set-env name=UI_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'ui') }}"
-          echo "::set-env name=ALM_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'alm') }}"
-      - if: ${{ matrix.use-cache }} 
+          echo "E2E_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'Dockerfile.e2e', 'commons', 'oracle-e2e', 'monitor-e2e') }}" >> $GITHUB_ENV
+          echo "ORACLE_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'oracle') }}" >> $GITHUB_ENV
+          echo "MONITOR_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'monitor') }}" >> $GITHUB_ENV
+          echo "UI_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'ui') }}" >> $GITHUB_ENV
+          echo "ALM_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'alm') }}" >> $GITHUB_ENV
+      - if: ${{ matrix.use-cache }}
        uses: actions/cache@v2
        id: cache-repo
        with:
@@ -165,11 +175,14 @@ jobs:
            **/node_modules
            contracts/build
          key: ${{ needs.initialize.outputs.cache_key }}
-      - run: docker login ${DOCKER_REGISTRY} -u ${{ github.actor }} -p ${{ github.token }}
-      - run: ${{ !matrix.use-cache || steps.cache-repo.outputs.cache-hit }} && yarn run ${{ matrix.task }}
+      - name: Login to docker registry
+        run: docker login ${DOCKER_REGISTRY} -u ${{ github.actor }} -p ${{ github.token }}
+      - name: yarn run ${{ matrix.task }}
+        run: ${{ !matrix.use-cache || steps.cache-repo.outputs.cache-hit }} && yarn run ${{ matrix.task }}
  deployment:
    runs-on: ubuntu-latest
    needs:
+      - build-e2e-images
      - build-molecule-runner
    strategy:
      fail-fast: false
@@ -179,15 +192,17 @@ jobs:
      - uses: actions/checkout@v2
        with:
          submodules: true
-      - run: echo "::set-env name=MOLECULE_RUNNER_TAG::${{ hashFiles('./deployment-e2e/Dockerfile') }}"
-      - run: docker login ${DOCKER_REGISTRY} -u ${{ github.actor }} -p ${{ github.token }}
+      - name: Evaluate e2e molecule runner tag
+        run: echo "MOLECULE_RUNNER_TAG=${{ hashFiles('./deployment-e2e/Dockerfile') }}" >> $GITHUB_ENV
+      - name: Login to docker registry
+        run: docker login ${DOCKER_REGISTRY} -u ${{ github.actor }} -p ${{ github.token }}
      - run: deployment-e2e/molecule.sh ${{ matrix.task }}
  ultimate:
+    if: github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/tags') || contains(github.event.head_commit.message, 'ultimate')
    runs-on: ubuntu-latest
    needs:
      - initialize
      - build-e2e-images
-    if: github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/tags')
    strategy:
      fail-fast: false
      matrix:
@@ -195,24 +210,29 @@ jobs:
        include:
          - task: erc-to-erc
            ui-e2e-grep: 'ERC TO ERC'
+            ui-config: 'e2e-commons/components-envs/ui-erc20.env'
          - task: erc-to-native
            ui-e2e-grep: 'ERC TO NATIVE'
+            ui-config: 'e2e-commons/components-envs/ui-erc20-native.env'
          - task: native-to-erc
            ui-e2e-grep: 'NATIVE TO ERC'
+            ui-config: 'e2e-commons/components-envs/ui.env'
          - task: amb-stake-erc-to-erc
            ui-e2e-grep: 'AMB-STAKE-ERC-TO-ERC'
+            ui-config: 'e2e-commons/components-envs/ui-amb-stake-erc20-erc20.env'
    steps:
      - uses: actions/checkout@v2
        with:
          submodules: true
-      - run: |
+      - name: Evaluate e2e docker images tags
+        run: |
          git submodule status > submodule.status
-          echo "::set-env name=E2E_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'Dockerfile.e2e', 'commons', 'oracle-e2e', 'monitor-e2e') }}"
-          echo "::set-env name=ORACLE_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'oracle') }}"
-          echo "::set-env name=MONITOR_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'monitor') }}"
-          echo "::set-env name=UI_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'ui') }}"
-          echo "::set-env name=ALM_TAG::${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'alm') }}"
-          echo "::set-env name=MOLECULE_RUNNER_TAG::${{ hashFiles('./deployment-e2e/Dockerfile') }}"
+          echo "E2E_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'Dockerfile.e2e', 'commons', 'oracle-e2e', 'monitor-e2e') }}" >> $GITHUB_ENV
+          echo "ORACLE_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'oracle') }}" >> $GITHUB_ENV
+          echo "MONITOR_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'monitor') }}" >> $GITHUB_ENV
+          echo "UI_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'ui') }}" >> $GITHUB_ENV
+          echo "ALM_TAG=${{ hashFiles('yarn.lock', 'package.json', 'submodule.status', 'commons', 'alm') }}" >> $GITHUB_ENV
+          echo "MOLECULE_RUNNER_TAG=${{ hashFiles('./deployment-e2e/Dockerfile') }}" >> $GITHUB_ENV
      - uses: actions/cache@v2
        id: cache-repo
        with:
@@ -220,12 +240,32 @@ jobs:
            **/node_modules
            contracts/build
          key: ${{ needs.initialize.outputs.cache_key }}
-      - run: docker login ${DOCKER_REGISTRY} -u ${{ github.actor }} -p ${{ github.token }}
-      - run: ${{ steps.cache-repo.outputs.cache-hit }} && e2e-commons/up.sh deploy blocks
-      - run: docker-compose -f ./e2e-commons/docker-compose.yml pull oracle
-      - run: deployment-e2e/molecule.sh ultimate-${{ matrix.task }}
-      - run: sudo chown -R $USER:docker /var/run/docker.sock
+      - name: Login to docker registry
+        run: docker login ${DOCKER_REGISTRY} -u ${{ github.actor }} -p ${{ github.token }}
+      - name: Deploy contracts
+        run: ${{ steps.cache-repo.outputs.cache-hit }} && e2e-commons/up.sh deploy blocks
+      - name: Pull e2e oracle image
+        run: |
+         docker-compose -f ./e2e-commons/docker-compose.yml pull oracle
+         docker tag ${DOCKER_IMAGE_BASE}/tokenbridge-e2e-oracle:${ORACLE_TAG} poanetwork/tokenbridge-oracle:latest
      - if: ${{ matrix.ui-e2e-grep }}
+        name: Pull e2e ui image
+        run: |
+          docker-compose -f ./e2e-commons/docker-compose.yml pull ui
+          docker build \
+            --build-arg DOCKER_IMAGE_BASE=${DOCKER_IMAGE_BASE} \
+            --build-arg UI_TAG=${UI_TAG} \
+            --build-arg DOT_ENV_PATH=${{ matrix.ui-config }} \
+            -f ./e2e-commons/Dockerfile.ui \
+            -t ui_ui:latest \
+            .
+      - name: Deploy oracle and ui
+        run: deployment-e2e/molecule.sh ultimate-${{ matrix.task }}
+      - name: Reset docker socket permissions
+        run: sudo chown -R $USER:docker /var/run/docker.sock
+      - name: Run ui e2e tests
+        if: ${{ matrix.ui-e2e-grep }}
        run: cd ui-e2e && xvfb-run yarn mocha -g "${{ matrix.ui-e2e-grep }}" -b ./test.js
-      - if: ${{ !matrix.ui-e2e-grep }}
+      - name: Run oracle e2e tests
+        if: ${{ !matrix.ui-e2e-grep }}
        run: docker-compose -f ./e2e-commons/docker-compose.yml run e2e yarn workspace oracle-e2e run ${{ matrix.task }}
--- a/.gitignore
+++ b/.gitignore
@@ -10,11 +10,8 @@ dist

 # misc
 .DS_Store
-.env
-.env.local
-.env.development.local
-.env.test.local
-.env.production.local
+*.env*
+!.env.example
 .idea
 .nyc_output
 logs/
@@ -49,5 +46,9 @@ __pycache__

 #monitor
 monitor/responses/*
-monitor/configs/*.env
+monitor/cache/*
+!monitor/cache/.gitkeep
 !monitor/.gitkeep
+
+# Local Netlify folder
+.netlify
--- a/CONFIGURATION.md
+++ b/CONFIGURATION.md
@@ -22,7 +22,7 @@ COMMON_FOREIGN_GAS_PRICE_FACTOR | A value that will multiply the gas price of th

 name | description | value
 --- | --- | ---
-ORACLE_BRIDGE_MODE | The bridge mode. The bridge starts listening to a different set of events based on this parameter. | NATIVE_TO_ERC / ERC_TO_ERC / ERC_TO_NATIVE
+ORACLE_BRIDGE_MODE | The bridge mode. The bridge starts listening to a different set of events based on this parameter. | NATIVE_TO_ERC / ERC_TO_ERC / ERC_TO_NATIVE / ARBITRARY_MESSAGE
 ORACLE_ALLOW_HTTP_FOR_RPC | **Only use in test environments - must be omitted in production environments.**. If this parameter is specified and set to `yes`, RPC URLs can be specified in form of HTTP links. A warning that the connection is insecure will be written to the logs. | `yes` / `no`
 ORACLE_HOME_RPC_POLLING_INTERVAL | The interval in milliseconds used to request the RPC node in the Home network for new blocks. The interval should match the average production time for a new block. | integer
 ORACLE_FOREIGN_RPC_POLLING_INTERVAL | The interval in milliseconds used to request the RPC node in the Foreign network for new blocks. The interval should match the average production time for a new block. | integer
@@ -37,6 +37,18 @@ ORACLE_MAX_PROCESSING_TIME | The workers processes will be killed if this amount
 ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY | The private key of the bridge validator used to sign confirmations before sending transactions to the bridge contracts. The validator account is calculated automatically from the private key. Every bridge instance (set of watchers and senders) must have its own unique private key. The specified private key is used to sign transactions on both sides of the bridge. | hexidecimal without "0x"
 ORACLE_VALIDATOR_ADDRESS | The public address of the bridge validator | hexidecimal with "0x"
 ORACLE_TX_REDUNDANCY | If set to `true`, instructs oracle to send `eth_sendRawTransaction` requests through all available RPC urls defined in `COMMON_HOME_RPC_URL` and `COMMON_FOREIGN_RPC_URL` variables instead of using first available one
+ORACLE_HOME_TO_FOREIGN_ALLOWANCE_LIST | Filename with a list of addresses, separated by newlines. If set, determines the privileged set of accounts whose requests will be automatically processed by the CollectedSignatures watcher. | string
+ORACLE_HOME_TO_FOREIGN_BLOCK_LIST | Filename with a list of addresses, separated by newlines. If set, determines the blocked set of accounts whose requests will not be automatically processed by the CollectedSignatures watcher. Has a lower priority than the `ORACLE_HOME_TO_FOREIGN_ALLOWANCE_LIST` | string
+ORACLE_HOME_TO_FOREIGN_CHECK_SENDER | If set to `true`, instructs the oracle to do an extra check for transaction origin in the block/allowance list. `false` by default. | `true` / `false`
+ORACLE_ALWAYS_RELAY_SIGNATURES | If set to `true`, the oracle will always relay signatures even if it was not the last who finilized the signatures collecting process. The default is `false`. | `true` / `false`
+ORACLE_RPC_REQUEST_TIMEOUT | Timeout in milliseconds for a single RPC request. Default value is `ORACLE_*_RPC_POLLING_INTERVAL * 2`. | integer
+ORACLE_HOME_TX_RESEND_INTERVAL | Interval in milliseconds for automatic resending of stuck transactions for Home sender service. Defaults to 20 minutes. | integer  
+ORACLE_FOREIGN_TX_RESEND_INTERVAL | Interval in milliseconds for automatic resending of stuck transactions for Foreign sender service. Defaults to 20 minutes. | integer  
+ORACLE_SHUTDOWN_SERVICE_URL | Optional external URL to some other service/monitor/configuration manager that controls the remote shutdown process. GET request should return `application/json` message with the following schema: `{ shutdown: true/false }`. | URL
+ORACLE_SHUTDOWN_SERVICE_POLLING_INTERVAL | Optional interval in milliseconds used to request the side RPC node or external shutdown service. Default is 120000. | integer
+ORACLE_SIDE_RPC_URL | Optional HTTPS URL(s) for communication with the external shutdown service or side RPC nodes, used for shutdown manager activities. Several URLs can be specified, delimited by spaces. If the connection to one of these nodes is lost the next URL is used for connection. | URL(s)
+ORACLE_SHUTDOWN_CONTRACT_ADDRESS | Optional contract address in the side chain accessible through `ORACLE_SIDE_RPC_URL`, where the method passed in `ORACLE_SHUTDOWN_CONTRACT_METHOD` is implemented. | `address`
+ORACLE_SHUTDOWN_CONTRACT_METHOD | Method signature to be used in the side chain to identify the current shutdown status. Method should return boolean. Default value is `isShutdown()`. | `function signature`


 ## UI configuration
@@ -73,4 +85,9 @@ MONITOR_VALIDATOR_FOREIGN_TX_LIMIT | Average gas usage of a transaction sent by
 MONITOR_TX_NUMBER_THRESHOLD | If estimated number of transaction is equal to or below this value, the monitor will report that the validator has less funds than it is required. | integer
 MONITOR_PORT | The port for the Monitor. | integer
 MONITOR_BRIDGE_NAME | The name to be used in the url path for the bridge | string
-MONITOR_CACHE_EVENTS | If set to true, monitor will cache obtained events for other workers runs
+MONITOR_CACHE_EVENTS | If set to true, monitor will cache obtained events for other workers runs | `true` / `false`
+MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST | File with a list of addresses, separated by newlines. If set, determines the privileged set of accounts whose requests should be automatically processed by the CollectedSignatures watcher. | string
+MONITOR_HOME_TO_FOREIGN_BLOCK_LIST | File with a list of addresses, separated by newlines. If set, determines the set of accounts whose requests should be marked as unclaimed. Has a lower priority than the `MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST`. | string
+MONITOR_HOME_TO_FOREIGN_CHECK_SENDER | If set to `true`, instructs the oracle to do an extra check for transaction origin in the block/allowance list. `false` by default. | `true` / `false`
+MONITOR_HOME_VALIDATORS_BALANCE_ENABLE | If set, defines the list of home validator addresses for which balance should be checked. | `string`
+MONITOR_FOREIGN_VALIDATORS_BALANCE_ENABLE | If set, defines the list of foreign validator addresses for which balance should be checked. | `string`
--- a/alm-e2e/package.json
+++ b/alm-e2e/package.json
@@ -19,6 +19,6 @@
    "eslint-plugin-jest": "^23.18.0"
  },
  "engines": {
-    "node": ">= 8.9"
+    "node": ">= 10.18"
  }
 }
--- a/alm/Dockerfile
+++ b/alm/Dockerfile
@@ -19,7 +19,7 @@ COPY --from=contracts /mono/contracts/build ./contracts/build
 COPY commons/package.json ./commons/
 COPY alm/package.json ./alm/
 COPY yarn.lock .
-RUN NOYARNPOSTINSTALL=1 yarn install --frozen-lockfile --production
+RUN NOYARNPOSTINSTALL=1 yarn install --frozen-lockfile

 COPY ./commons ./commons
 COPY ./alm ./alm
--- a/alm/package.json
+++ b/alm/package.json
@@ -3,6 +3,7 @@
  "version": "0.1.0",
  "private": true,
  "dependencies": {
+    "@ethersproject/bignumber": ">=5.0.0-beta.130",
    "@react-hook/window-size": "^3.0.6",
    "@testing-library/jest-dom": "^4.2.4",
    "@testing-library/react": "^9.3.2",
@@ -15,6 +16,8 @@
    "@types/react-router-dom": "^5.1.5",
    "@types/styled-components": "^5.1.0",
    "@use-it/interval": "^0.1.3",
+    "@web3-react/core": "^6.1.1",
+    "@web3-react/injected-connector": "^6.0.7",
    "customize-cra": "^1.0.0",
    "date-fns": "^2.14.0",
    "dotenv": "^8.2.0",
@@ -27,8 +30,9 @@
    "react-scripts": "3.0.1",
    "styled-components": "^5.1.1",
    "typescript": "^3.5.2",
-    "web3": "1.2.7",
-    "web3-eth-contract": "1.2.7"
+    "web3": "1.2.11",
+    "web3-eth-contract": "1.2.11",
+    "web3-utils": "1.2.11"
  },
  "scripts": {
    "start": "yarn createSnapshots && ./load-env.sh react-app-rewired start",
@@ -54,6 +58,7 @@
    ]
  },
  "devDependencies": {
-    "eslint-plugin-prettier": "^3.1.3"
+    "eslint-plugin-prettier": "^3.1.3",
+    "node-fetch": "^2.6.1"
  }
 }
--- a/alm/public/_redirects
+++ b/alm/public/_redirects
@@ -0,0 +1 @@
+/*  /index.html  200
--- a/alm/scripts/createSnapshots.js
+++ b/alm/scripts/createSnapshots.js
@@ -3,6 +3,8 @@ const { BRIDGE_VALIDATORS_ABI, HOME_AMB_ABI } = require('commons')
 const path = require('path')
 require('dotenv').config()
 const Web3 = require('web3')
+const fetch = require('node-fetch')
+const { URL } = require('url')

 const fs = require('fs')

@@ -10,7 +12,9 @@ const {
  COMMON_HOME_RPC_URL,
  COMMON_HOME_BRIDGE_ADDRESS,
  COMMON_FOREIGN_RPC_URL,
-  COMMON_FOREIGN_BRIDGE_ADDRESS
+  COMMON_FOREIGN_BRIDGE_ADDRESS,
+  ALM_FOREIGN_EXPLORER_API,
+  ALM_HOME_EXPLORER_API
 } = process.env

 const generateSnapshot = async (side, url, bridgeAddress) => {
@@ -19,6 +23,31 @@ const generateSnapshot = async (side, url, bridgeAddress) => {
  const snapshot = {}

  const web3 = new Web3(new Web3.providers.HttpProvider(url))
+  const api = side === 'home' ? ALM_HOME_EXPLORER_API : ALM_FOREIGN_EXPLORER_API
+
+  const getPastEventsWithFallback = (contract, eventName, options) =>
+    contract.getPastEvents(eventName, options).catch(async e => {
+      if (e.message.includes('exceed maximum block range')) {
+        const abi = contract.options.jsonInterface.find(abi => abi.type === 'event' && abi.name === eventName)
+
+        const url = new URL(api)
+        url.searchParams.append('module', 'logs')
+        url.searchParams.append('action', 'getLogs')
+        url.searchParams.append('address', contract.options.address)
+        url.searchParams.append('fromBlock', options.fromBlock)
+        url.searchParams.append('toBlock', options.toBlock || 'latest')
+        url.searchParams.append('topic0', web3.eth.abi.encodeEventSignature(abi))
+
+        const logs = await fetch(url).then(res => res.json())
+
+        return logs.result.map(log => ({
+          transactionHash: log.transactionHash,
+          blockNumber: parseInt(log.blockNumber.slice(2), 16),
+          returnValues: web3.eth.abi.decodeLog(abi.inputs, log.data, log.topics.slice(1))
+        }))
+      }
+      throw e
+    })

  const currentBlockNumber = await web3.eth.getBlockNumber()
  snapshot.snapshotBlockNumber = currentBlockNumber
@@ -29,10 +58,14 @@ const generateSnapshot = async (side, url, bridgeAddress) => {
  const bridgeContract = new web3.eth.Contract(HOME_AMB_ABI, bridgeAddress)

  // Save RequiredBlockConfirmationChanged events
-  let requiredBlockConfirmationChangedEvents = await bridgeContract.getPastEvents('RequiredBlockConfirmationChanged', {
-    fromBlock: 0,
-    toBlock: currentBlockNumber
-  })
+  let requiredBlockConfirmationChangedEvents = await getPastEventsWithFallback(
+    bridgeContract,
+    'RequiredBlockConfirmationChanged',
+    {
+      fromBlock: 0,
+      toBlock: currentBlockNumber
+    }
+  )

  // In case RequiredBlockConfirmationChanged was not emitted during initialization in early versions of AMB
  // manually generate an event for this. Example Sokol - Kovan bridge
@@ -59,10 +92,14 @@ const generateSnapshot = async (side, url, bridgeAddress) => {
  const validatorContract = new web3.eth.Contract(BRIDGE_VALIDATORS_ABI, validatorAddress)

  // Save RequiredSignaturesChanged events
-  const RequiredSignaturesChangedEvents = await validatorContract.getPastEvents('RequiredSignaturesChanged', {
-    fromBlock: 0,
-    toBlock: currentBlockNumber
-  })
+  const RequiredSignaturesChangedEvents = await getPastEventsWithFallback(
+    validatorContract,
+    'RequiredSignaturesChanged',
+    {
+      fromBlock: 0,
+      toBlock: currentBlockNumber
+    }
+  )
  snapshot.RequiredSignaturesChanged = RequiredSignaturesChangedEvents.map(e => ({
    blockNumber: e.blockNumber,
    returnValues: {
@@ -71,7 +108,7 @@ const generateSnapshot = async (side, url, bridgeAddress) => {
  }))

  // Save ValidatorAdded events
-  const validatorAddedEvents = await validatorContract.getPastEvents('ValidatorAdded', {
+  const validatorAddedEvents = await getPastEventsWithFallback(validatorContract, 'ValidatorAdded', {
    fromBlock: 0,
    toBlock: currentBlockNumber
  })
@@ -85,7 +122,7 @@ const generateSnapshot = async (side, url, bridgeAddress) => {
  }))

  // Save ValidatorRemoved events
-  const validatorRemovedEvents = await validatorContract.getPastEvents('ValidatorRemoved', {
+  const validatorRemovedEvents = await getPastEventsWithFallback(validatorContract, 'ValidatorRemoved', {
    fromBlock: 0,
    toBlock: currentBlockNumber
  })
--- a/alm/src/App.tsx
+++ b/alm/src/App.tsx
@@ -1,14 +1,18 @@
 import React from 'react'
 import { BrowserRouter } from 'react-router-dom'
+import { Web3ReactProvider } from '@web3-react/core'
+import Web3 from 'web3'
 import { MainPage } from './components/MainPage'
 import { StateProvider } from './state/StateProvider'

 function App() {
  return (
    <BrowserRouter>
-      <StateProvider>
-        <MainPage />
-      </StateProvider>
+      <Web3ReactProvider getLibrary={provider => new Web3(provider)}>
+        <StateProvider>
+          <MainPage />
+        </StateProvider>
+      </Web3ReactProvider>
    </BrowserRouter>
  )
 }
--- a/alm/src/components/ConfirmationsContainer.tsx
+++ b/alm/src/components/ConfirmationsContainer.tsx
@@ -39,21 +39,38 @@ export interface ConfirmationsContainerParams {
  message: MessageObject
  receipt: Maybe<TransactionReceipt>
  fromHome: boolean
-  timestamp: number
+  homeStartBlock: Maybe<number>
+  foreignStartBlock: Maybe<number>
 }

-export const ConfirmationsContainer = ({ message, receipt, fromHome, timestamp }: ConfirmationsContainerParams) => {
+export const ConfirmationsContainer = ({
+  message,
+  receipt,
+  fromHome,
+  homeStartBlock,
+  foreignStartBlock
+}: ConfirmationsContainerParams) => {
  const {
    home: { name: homeName },
    foreign: { name: foreignName }
  } = useStateProvider()
  const { requiredSignatures, validatorList } = useValidatorContract({ fromHome, receipt })
  const { blockConfirmations } = useBlockConfirmations({ fromHome, receipt })
-  const { confirmations, status, executionData, signatureCollected, waitingBlocksResolved } = useMessageConfirmations({
+  const {
+    confirmations,
+    status,
+    executionData,
+    signatureCollected,
+    waitingBlocksResolved,
+    setExecutionData,
+    executionEventsFetched,
+    setPendingExecution
+  } = useMessageConfirmations({
    message,
    receipt,
    fromHome,
-    timestamp,
+    homeStartBlock,
+    foreignStartBlock,
    requiredSignatures,
    validatorList,
    blockConfirmations
@@ -102,7 +119,17 @@ export const ConfirmationsContainer = ({ message, receipt, fromHome, timestamp }
          validatorList={validatorList}
          waitingBlocksResolved={waitingBlocksResolved}
        />
-        {signatureCollected && <ExecutionConfirmation executionData={executionData} isHome={!fromHome} />}
+        {signatureCollected && (
+          <ExecutionConfirmation
+            messageData={message.data}
+            executionData={executionData}
+            isHome={!fromHome}
+            signatureCollected={signatureCollected}
+            setExecutionData={setExecutionData}
+            executionEventsFetched={executionEventsFetched}
+            setPendingExecution={setPendingExecution}
+          />
+        )}
      </StyledConfirmationContainer>
    </div>
  )
--- a/alm/src/components/ExecutionConfirmation.tsx
+++ b/alm/src/components/ExecutionConfirmation.tsx
@@ -1,24 +1,47 @@
 import React from 'react'
 import { formatTimestamp, formatTxHash, getExplorerTxUrl } from '../utils/networks'
 import { useWindowWidth } from '@react-hook/window-size'
-import { SEARCHING_TX, VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
+import { SEARCHING_TX, VALIDATOR_CONFIRMATION_STATUS, ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION } from '../config/constants'
 import { SimpleLoading } from './commons/Loading'
 import styled from 'styled-components'
 import { ExecutionData } from '../hooks/useMessageConfirmations'
 import { GreyLabel, RedLabel, SuccessLabel } from './commons/Labels'
 import { ExplorerTxLink } from './commons/ExplorerTxLink'
 import { Thead, AgeTd, StatusTd } from './commons/Table'
+import { ManualExecutionButton } from './ManualExecutionButton'

 const StyledExecutionConfirmation = styled.div`
  margin-top: 30px;
 `

 export interface ExecutionConfirmationParams {
+  messageData: string
  executionData: ExecutionData
+  setExecutionData: Function
+  signatureCollected: boolean | string[]
  isHome: boolean
+  executionEventsFetched: boolean
+  setPendingExecution: Function
 }

-export const ExecutionConfirmation = ({ executionData, isHome }: ExecutionConfirmationParams) => {
+export const ExecutionConfirmation = ({
+  messageData,
+  executionData,
+  setExecutionData,
+  signatureCollected,
+  isHome,
+  executionEventsFetched,
+  setPendingExecution
+}: ExecutionConfirmationParams) => {
+  const availableManualExecution =
+    !isHome &&
+    (executionData.status === VALIDATOR_CONFIRMATION_STATUS.WAITING ||
+      executionData.status === VALIDATOR_CONFIRMATION_STATUS.FAILED ||
+      (executionData.status === VALIDATOR_CONFIRMATION_STATUS.UNDEFINED &&
+        executionEventsFetched &&
+        !!executionData.validator))
+  const requiredManualExecution = availableManualExecution && ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION
+  const showAgeColumn = !requiredManualExecution || executionData.status === VALIDATOR_CONFIRMATION_STATUS.FAILED
  const windowWidth = useWindowWidth()

  const txExplorerLink = getExplorerTxUrl(executionData.txHash, isHome)
@@ -48,26 +71,47 @@ export const ExecutionConfirmation = ({ executionData, isHome }: ExecutionConfir
      <table>
        <Thead>
          <tr>
-            <th>Executed by</th>
+            <th>{requiredManualExecution ? 'Execution info' : 'Executed by'}</th>
            <th className="text-center">Status</th>
-            <th className="text-center">Age</th>
+            {showAgeColumn && <th className="text-center">Age</th>}
+            {availableManualExecution && <th className="text-center">Actions</th>}
          </tr>
        </Thead>
        <tbody>
          <tr>
-            <td>{formattedValidator ? formattedValidator : <SimpleLoading />}</td>
-            <StatusTd className="text-center">{getExecutionStatusElement(executionData.status)}</StatusTd>
-            <AgeTd className="text-center">
-              {executionData.timestamp > 0 ? (
-                <ExplorerTxLink href={txExplorerLink} target="_blank">
-                  {formatTimestamp(executionData.timestamp)}
-                </ExplorerTxLink>
-              ) : executionData.status === VALIDATOR_CONFIRMATION_STATUS.WAITING ? (
-                ''
+            <td>
+              {requiredManualExecution ? (
+                'Manual user action is required to complete the operation'
+              ) : formattedValidator ? (
+                formattedValidator
              ) : (
-                SEARCHING_TX
+                <SimpleLoading />
              )}
-            </AgeTd>
+            </td>
+            <StatusTd className="text-center">{getExecutionStatusElement(executionData.status)}</StatusTd>
+            {showAgeColumn && (
+              <AgeTd className="text-center">
+                {executionData.timestamp > 0 ? (
+                  <ExplorerTxLink href={txExplorerLink} target="_blank">
+                    {formatTimestamp(executionData.timestamp)}
+                  </ExplorerTxLink>
+                ) : executionData.status === VALIDATOR_CONFIRMATION_STATUS.WAITING ? (
+                  ''
+                ) : (
+                  SEARCHING_TX
+                )}
+              </AgeTd>
+            )}
+            {availableManualExecution && (
+              <td>
+                <ManualExecutionButton
+                  messageData={messageData}
+                  setExecutionData={setExecutionData}
+                  signatureCollected={signatureCollected as string[]}
+                  setPendingExecution={setPendingExecution}
+                />
+              </td>
+            )}
          </tr>
        </tbody>
      </table>
--- a/alm/src/components/MainPage.tsx
+++ b/alm/src/components/MainPage.tsx
@@ -8,6 +8,7 @@ import { TransactionReceipt } from 'web3-eth'
 import { InfoAlert } from './commons/InfoAlert'
 import { ExplorerTxLink } from './commons/ExplorerTxLink'
 import { FOREIGN_NETWORK_NAME, HOME_NETWORK_NAME } from '../config/constants'
+import { ErrorAlert } from './commons/ErrorAlert'

 const StyledMainPage = styled.div`
  text-align: center;
@@ -51,7 +52,7 @@ export interface FormSubmitParams {

 export const MainPage = () => {
  const history = useHistory()
-  const { home, foreign } = useStateProvider()
+  const { home, foreign, error, setError } = useStateProvider()
  const [networkName, setNetworkName] = useState('')
  const [receipt, setReceipt] = useState<Maybe<TransactionReceipt>>(null)
  const [showInfoAlert, setShowInfoAlert] = useState(false)
@@ -131,6 +132,7 @@ export const MainPage = () => {
            </AlertP>
          </InfoAlert>
        )}
+        {error && <ErrorAlert onClick={() => setError('')} error={error} />}
        <Route exact path={['/']} children={<Form onSubmit={onFormSubmit} />} />
        <Route
          path={['/:chainId/:txHash/:messageIdParam', '/:chainId/:txHash']}
--- a/alm/src/components/ManualExecutionButton.tsx
+++ b/alm/src/components/ManualExecutionButton.tsx
@@ -0,0 +1,146 @@
+import React, { useState, useEffect } from 'react'
+import styled from 'styled-components'
+import { InjectedConnector } from '@web3-react/injected-connector'
+import { useWeb3React } from '@web3-react/core'
+import {
+  DOUBLE_EXECUTION_ATTEMPT_ERROR,
+  EXECUTION_FAILED_ERROR,
+  EXECUTION_OUT_OF_GAS_ERROR,
+  FOREIGN_EXPLORER_API,
+  INCORRECT_CHAIN_ERROR,
+  VALIDATOR_CONFIRMATION_STATUS
+} from '../config/constants'
+import { useStateProvider } from '../state/StateProvider'
+import { signatureToVRS, packSignatures } from '../utils/signatures'
+import { getSuccessExecutionData } from '../utils/getFinalizationEvent'
+import { TransactionReceipt } from 'web3-eth'
+
+const StyledButton = styled.button`
+  color: var(--button-color);
+  border-color: var(--font-color);
+  margin-top: 10px;
+  &:focus {
+    outline: var(--button-color);
+  }
+`
+
+interface ManualExecutionButtonParams {
+  messageData: string
+  setExecutionData: Function
+  signatureCollected: string[]
+  setPendingExecution: Function
+}
+
+export const ManualExecutionButton = ({
+  messageData,
+  setExecutionData,
+  signatureCollected,
+  setPendingExecution
+}: ManualExecutionButtonParams) => {
+  const { foreign, setError } = useStateProvider()
+  const { library, activate, account, active } = useWeb3React()
+  const [manualExecution, setManualExecution] = useState(false)
+
+  useEffect(
+    () => {
+      if (!manualExecution || !foreign.chainId) return
+
+      if (!active) {
+        activate(new InjectedConnector({ supportedChainIds: [foreign.chainId] }), e => {
+          if (e.message.includes('Unsupported chain id')) {
+            setError(INCORRECT_CHAIN_ERROR)
+            const { ethereum } = window as any
+
+            // remove the error message after chain is correctly changed to the foreign one
+            const listener = (chainId: string) => {
+              if (parseInt(chainId.slice(2), 16) === foreign.chainId) {
+                ethereum.removeListener('chainChanged', listener)
+                setError((error: string) => (error === INCORRECT_CHAIN_ERROR ? '' : error))
+              }
+            }
+            ethereum.on('chainChanged', listener)
+          } else {
+            setError(e.message)
+          }
+          setManualExecution(false)
+        })
+        return
+      }
+
+      if (!library || !foreign.bridgeContract || !signatureCollected || !signatureCollected.length) return
+
+      const signatures = packSignatures(signatureCollected.map(signatureToVRS))
+      const messageId = messageData.slice(0, 66)
+      const bridge = foreign.bridgeContract
+      const data = bridge.methods.executeSignatures(messageData, signatures).encodeABI()
+      setManualExecution(false)
+
+      library.eth
+        .sendTransaction({
+          from: account,
+          to: foreign.bridgeAddress,
+          data
+        })
+        .on('transactionHash', (txHash: string) => {
+          setExecutionData({
+            status: VALIDATOR_CONFIRMATION_STATUS.PENDING,
+            validator: account,
+            txHash,
+            timestamp: Math.floor(new Date().getTime() / 1000.0),
+            executionResult: false
+          })
+          setPendingExecution(true)
+        })
+        .on('error', async (e: Error, receipt: TransactionReceipt) => {
+          if (e.message.includes('Transaction has been reverted by the EVM')) {
+            const successExecutionData = await getSuccessExecutionData(
+              bridge,
+              'RelayedMessage',
+              library,
+              messageId,
+              FOREIGN_EXPLORER_API
+            )
+            if (successExecutionData) {
+              setExecutionData(successExecutionData)
+              setError(DOUBLE_EXECUTION_ATTEMPT_ERROR)
+            } else {
+              const { gas } = await library.eth.getTransaction(receipt.transactionHash)
+              setExecutionData({
+                status: VALIDATOR_CONFIRMATION_STATUS.FAILED,
+                validator: account,
+                txHash: receipt.transactionHash,
+                timestamp: Math.floor(new Date().getTime() / 1000.0),
+                executionResult: false
+              })
+              setError(gas === receipt.gasUsed ? EXECUTION_OUT_OF_GAS_ERROR : EXECUTION_FAILED_ERROR)
+            }
+          } else {
+            setError(e.message)
+          }
+        })
+    },
+    [
+      manualExecution,
+      library,
+      activate,
+      active,
+      account,
+      foreign.chainId,
+      foreign.bridgeAddress,
+      foreign.bridgeContract,
+      setError,
+      messageData,
+      signatureCollected,
+      setExecutionData,
+      setPendingExecution
+    ]
+  )
+
+  return (
+    <div className="is-center">
+      <StyledButton className="button outline" onClick={() => setManualExecution(true)}>
+        Execute
+      </StyledButton>
+    </div>
+  )
+}
--- a/alm/src/components/StatusContainer.tsx
+++ b/alm/src/components/StatusContainer.tsx
@@ -10,6 +10,7 @@ import { ExplorerTxLink } from './commons/ExplorerTxLink'
 import { ConfirmationsContainer } from './ConfirmationsContainer'
 import { TransactionReceipt } from 'web3-eth'
 import { BackButton } from './commons/BackButton'
+import { useClosestBlock } from '../hooks/useClosestBlock'

 export interface StatusContainerParam {
  onBackToMain: () => void
@@ -23,12 +24,15 @@ export const StatusContainer = ({ onBackToMain, setNetworkFromParams, receiptPar
  const { chainId, txHash, messageIdParam } = useParams()
  const validChainId = chainId === home.chainId.toString() || chainId === foreign.chainId.toString()
  const validParameters = validChainId && validTxHash(txHash)
+  const isHome = chainId === home.chainId.toString()

  const { messages, receipt, status, description, timestamp, loading } = useTransactionStatus({
    txHash: validParameters ? txHash : '',
    chainId: validParameters ? parseInt(chainId) : 0,
    receiptParam
  })
+  const homeStartBlock = useClosestBlock(true, isHome, receipt, timestamp)
+  const foreignStartBlock = useClosestBlock(false, isHome, receipt, timestamp)

  const selectedMessageId = messageIdParam === undefined || messages[messageIdParam] === undefined ? -1 : messageIdParam

@@ -64,7 +68,6 @@ export const StatusContainer = ({ onBackToMain, setNetworkFromParams, receiptPar
  const displayReference = multiMessageSelected ? messages[selectedMessageId].id : txHash
  const formattedMessageId = formatTxHash(displayReference)

-  const isHome = chainId === home.chainId.toString()
  const txExplorerLink = getExplorerTxUrl(txHash, isHome)
  const displayExplorerLink = status !== TRANSACTION_STATUS.NOT_FOUND

@@ -101,7 +104,13 @@ export const StatusContainer = ({ onBackToMain, setNetworkFromParams, receiptPar
      )}
      {displayMessageSelector && <MessageSelector messages={messages} onMessageSelected={onMessageSelected} />}
      {displayConfirmations && (
-        <ConfirmationsContainer message={messageToConfirm} receipt={receipt} fromHome={isHome} timestamp={timestamp} />
+        <ConfirmationsContainer
+          message={messageToConfirm}
+          receipt={receipt}
+          fromHome={isHome}
+          homeStartBlock={homeStartBlock}
+          foreignStartBlock={foreignStartBlock}
+        />
      )}
      <BackButton onBackToMain={onBackToMain} />
    </div>
--- a/alm/src/components/commons/CloseIcon.tsx
+++ b/alm/src/components/commons/CloseIcon.tsx
@@ -1,6 +1,6 @@
 import React from 'react'

-export const CloseIcon = () => (
+export const CloseIcon = ({ color }: { color?: string }) => (
  <svg
    aria-hidden="true"
    focusable="false"
@@ -10,12 +10,9 @@ export const CloseIcon = () => (
    role="img"
    xmlns="http://www.w3.org/2000/svg"
    viewBox="0 0 352 512"
-    fill="#1890ff"
+    fill={color || '#1890ff'}
    height="1em"
  >
-    <path
-      fill="#1890ff"
-      d="M242.72 256l100.07-100.07c12.28-12.28 12.28-32.19 0-44.48l-22.24-22.24c-12.28-12.28-32.19-12.28-44.48 0L176 189.28 75.93 89.21c-12.28-12.28-32.19-12.28-44.48 0L9.21 111.45c-12.28 12.28-12.28 32.19 0 44.48L109.28 256 9.21 356.07c-12.28 12.28-12.28 32.19 0 44.48l22.24 22.24c12.28 12.28 32.2 12.28 44.48 0L176 322.72l100.07 100.07c12.28 12.28 32.2 12.28 44.48 0l22.24-22.24c12.28-12.28 12.28-32.19 0-44.48L242.72 256z"
-    />
+    <path d="M242.72 256l100.07-100.07c12.28-12.28 12.28-32.19 0-44.48l-22.24-22.24c-12.28-12.28-32.19-12.28-44.48 0L176 189.28 75.93 89.21c-12.28-12.28-32.19-12.28-44.48 0L9.21 111.45c-12.28 12.28-12.28 32.19 0 44.48L109.28 256 9.21 356.07c-12.28 12.28-12.28 32.19 0 44.48l22.24 22.24c12.28 12.28 32.2 12.28 44.48 0L176 322.72l100.07 100.07c12.28 12.28 32.2 12.28 44.48 0l22.24-22.24c12.28-12.28 12.28-32.19 0-44.48L242.72 256z" />
  </svg>
 )
--- a/alm/src/components/commons/ErrorAlert.tsx
+++ b/alm/src/components/commons/ErrorAlert.tsx
@@ -0,0 +1,48 @@
+import React from 'react'
+import styled from 'styled-components'
+import { InfoIcon } from './InfoIcon'
+import { CloseIcon } from './CloseIcon'
+import { ExplorerTxLink } from './ExplorerTxLink'
+
+const StyledErrorAlert = styled.div`
+  border: 1px solid var(--failed-color);
+  border-radius: 4px;
+  margin-bottom: 20px;
+  padding-top: 10px;
+`
+
+const CloseIconContainer = styled.div`
+  cursor: pointer;
+`
+
+const TextContainer = styled.div`
+  white-space: pre-wrap;
+  flex-direction: column;
+`
+
+export const ErrorAlert = ({ onClick, error }: { onClick: () => void; error: string }) => {
+  const errorArray = error.split('%link')
+  const text = errorArray[0]
+  let link
+  if (errorArray.length > 1) {
+    link = (
+      <ExplorerTxLink href={errorArray[1]} target="_blank" rel="noopener noreferrer">
+        {errorArray[1]}
+      </ExplorerTxLink>
+    )
+  }
+  return (
+    <div className="row is-center">
+      <StyledErrorAlert className="col-10 is-vertical-align row">
+        <InfoIcon color="var(--failed-color)" />
+        <TextContainer className="col-10">
+          {text}
+          {link}
+        </TextContainer>
+        <CloseIconContainer className="col-1 is-vertical-align is-center" onClick={onClick}>
+          <CloseIcon color="var(--failed-color)" />
+        </CloseIconContainer>
+      </StyledErrorAlert>
+    </div>
+  )
+}
--- a/alm/src/components/commons/InfoIcon.tsx
+++ b/alm/src/components/commons/InfoIcon.tsx
@@ -1,6 +1,6 @@
 import React from 'react'

-export const InfoIcon = () => (
+export const InfoIcon = ({ color }: { color?: string }) => (
  <svg
    className="col-1 is-left"
    viewBox="64 64 896 896"
@@ -8,7 +8,7 @@ export const InfoIcon = () => (
    data-icon="info-circle"
    width="1em"
    height="1em"
-    fill="#1890ff"
+    fill={color || '#1890ff'}
    aria-hidden="true"
  >
    <path d="M512 64C264.6 64 64 264.6 64 512s200.6 448 448 448 448-200.6 448-448S759.4 64 512 64zm32 664c0 4.4-3.6 8-8 8h-48c-4.4 0-8-3.6-8-8V456c0-4.4 3.6-8 8-8h48c4.4 0 8 3.6 8 8v272zm-32-344a48.01 48.01 0 010-96 48.01 48.01 0 010 96z" />
--- a/alm/src/config/constants.ts
+++ b/alm/src/config/constants.ts
@@ -13,11 +13,13 @@ export const FOREIGN_EXPLORER_TX_TEMPLATE: string = process.env.REACT_APP_ALM_FO
 export const HOME_EXPLORER_API: string = process.env.REACT_APP_ALM_HOME_EXPLORER_API || ''
 export const FOREIGN_EXPLORER_API: string = process.env.REACT_APP_ALM_FOREIGN_EXPLORER_API || ''

+export const ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION: boolean =
+  (process.env.REACT_APP_ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION || '').toLowerCase() === 'true'
+
 export const HOME_RPC_POLLING_INTERVAL: number = 5000
 export const FOREIGN_RPC_POLLING_INTERVAL: number = 5000
-export const BLOCK_RANGE: number = 50
-export const ONE_DAY_TIMESTAMP: number = 86400
-export const THREE_DAYS_TIMESTAMP: number = 259200
+export const BLOCK_RANGE: number = 500
+export const MAX_TX_SEARCH_BLOCK_RANGE: number = 10000

 export const EXECUTE_AFFIRMATION_HASH = 'e7a2c01f'
 export const SUBMIT_SIGNATURE_HASH = '630cea8e'
@@ -61,3 +63,14 @@ export const VALIDATOR_CONFIRMATION_STATUS = {
 }

 export const SEARCHING_TX = 'Searching Transaction...'
+
+export const INCORRECT_CHAIN_ERROR = `Incorrect chain chosen. Switch to ${FOREIGN_NETWORK_NAME} in the wallet.`
+
+export const DOUBLE_EXECUTION_ATTEMPT_ERROR = `Your execution transaction has been reverted.
+However, the execution completed successfully in the transaction sent by a different party.`
+
+export const EXECUTION_FAILED_ERROR = `Your execution transaction has been reverted.
+Please, contact the support by messaging on %linkhttps://forum.poa.network/c/support`
+
+export const EXECUTION_OUT_OF_GAS_ERROR = `Your execution transaction has been reverted due to Out-of-Gas error.
+Please, resend the transaction and provide more gas to it.`
--- a/alm/src/config/descriptions.ts
+++ b/alm/src/config/descriptions.ts
@@ -1,4 +1,6 @@
 // %t will be replaced by the time -> x minutes/hours/days ago
+import { ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION } from './constants'
+
 export const TRANSACTION_STATUS_DESCRIPTION: { [key: string]: string } = {
  SUCCESS_MULTIPLE_MESSAGES: 'was initiated %t and contains several bridge messages. Specify one of them:',
  SUCCESS_ONE_MESSAGE: 'was initiated %t',
@@ -24,7 +26,7 @@ export const CONFIRMATIONS_STATUS_LABEL_HOME: { [key: string]: string } = {
  SUCCESS_MESSAGE_FAILED: 'Success',
  EXECUTION_FAILED: 'Execution failed',
  EXECUTION_PENDING: 'Execution pending',
-  EXECUTION_WAITING: 'Execution waiting',
+  EXECUTION_WAITING: ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION ? 'Manual execution waiting' : 'Execution waiting',
  FAILED: 'Confirmation Failed',
  PENDING: 'Confirmation Pending',
  WAITING_VALIDATORS: 'Confirmation Waiting',
@@ -55,11 +57,12 @@ export const CONFIRMATIONS_STATUS_DESCRIPTION_HOME: { [key: string]: string } =
  SUCCESS_MESSAGE_FAILED:
    'The specified transaction was included in a block,\nthe validators collected signatures and the cross-chain relay was executed correctly,\nbut the contained message execution failed.\nContact the support of the application you used to produce the transaction for the clarifications.',
  EXECUTION_FAILED:
-    'The specified transaction was included in a block\nand the validators collected signatures. The\nvalidator’s transaction with collected signatures was\nsent but did not succeed. Contact to the validators by messaging\non %linkhttps://forum.poa.network/c/support',
+    'The specified transaction was included in a block\nand the validators collected signatures. The\n transaction with collected signatures was\nsent but did not succeed. Contact to the validators by messaging\non %linkhttps://forum.poa.network/c/support',
  EXECUTION_PENDING:
-    'The specified transaction was included in a block\nand the validators collected signatures. The\nvalidator’s transaction with collected signatures was\nsent but is not yet added to a block.',
-  EXECUTION_WAITING:
-    'The specified transaction was included in a block\nand the validators collected signatures. Either\n1. One of the validators is waiting for chain finalization.\n2. A validator skipped its duty to relay signatures.\nCheck status again after a few blocks. If the issue still persists contact to the validators by messaging on %linkhttps://forum.poa.network/c/support',
+    'The specified transaction was included in a block\nand the validators collected signatures. The\n transaction with collected signatures was\nsent but is not yet added to a block.',
+  EXECUTION_WAITING: ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION
+    ? 'The specified transaction was included in a block\nand the validators collected signatures.\nNow the manual user action is required to complete message execution.\n Please, press the "Execute" button.'
+    : 'The specified transaction was included in a block\nand the validators collected signatures. Either\n1. One of the validators is waiting for chain finalization.\n2. A validator skipped its duty to relay signatures.\n3. The execution transaction is still pending (e.g. due to the gas price spike).\nCheck status again after a few blocks or force execution by pressing the "Execute" button.\nIf the issue still persists contact to the validators by messaging on %linkhttps://forum.poa.network/c/support',
  FAILED:
    'The specified transaction was included in a block,\nbut transactions with signatures sent by a majority of\nvalidators failed. The cross-chain relay request will\nnot be processed. Contact to the validators by\nmessaging on %linkhttps://forum.poa.network/c/support',
  PENDING:
--- a/alm/src/hooks/useBlockConfirmations.ts
+++ b/alm/src/hooks/useBlockConfirmations.ts
@@ -4,6 +4,8 @@ import { useStateProvider } from '../state/StateProvider'
 import { Contract } from 'web3-eth-contract'
 import { getRequiredBlockConfirmations } from '../utils/contract'
 import { foreignSnapshotProvider, homeSnapshotProvider, SnapshotProvider } from '../services/SnapshotProvider'
+import Web3 from 'web3'
+import { FOREIGN_EXPLORER_API, HOME_EXPLORER_API } from '../config/constants'

 export interface UseBlockConfirmationsParams {
  fromHome: boolean
@@ -19,9 +21,11 @@ export const useBlockConfirmations = ({ receipt, fromHome }: UseBlockConfirmatio
    contract: Contract,
    receipt: TransactionReceipt,
    setResult: Function,
-    snapshotProvider: SnapshotProvider
+    snapshotProvider: SnapshotProvider,
+    web3: Web3,
+    api: string
  ) => {
-    const result = await getRequiredBlockConfirmations(contract, receipt.blockNumber, snapshotProvider)
+    const result = await getRequiredBlockConfirmations(contract, receipt.blockNumber, snapshotProvider, web3, api)
    setResult(result)
  }

@@ -29,10 +33,12 @@ export const useBlockConfirmations = ({ receipt, fromHome }: UseBlockConfirmatio
    () => {
      const bridgeContract = fromHome ? home.bridgeContract : foreign.bridgeContract
      const snapshotProvider = fromHome ? homeSnapshotProvider : foreignSnapshotProvider
-      if (!bridgeContract || !receipt) return
-      callRequireBlockConfirmations(bridgeContract, receipt, setBlockConfirmations, snapshotProvider)
+      const web3 = fromHome ? home.web3 : foreign.web3
+      const api = fromHome ? HOME_EXPLORER_API : FOREIGN_EXPLORER_API
+      if (!bridgeContract || !receipt || !web3) return
+      callRequireBlockConfirmations(bridgeContract, receipt, setBlockConfirmations, snapshotProvider, web3, api)
    },
-    [home.bridgeContract, foreign.bridgeContract, receipt, fromHome]
+    [home.bridgeContract, foreign.bridgeContract, receipt, fromHome, home.web3, foreign.web3]
  )

  return {
--- a/alm/src/hooks/useClosestBlock.ts
+++ b/alm/src/hooks/useClosestBlock.ts
@@ -0,0 +1,68 @@
+import { useEffect, useState } from 'react'
+import { TransactionReceipt } from 'web3-eth'
+import { useStateProvider } from '../state/StateProvider'
+import { FOREIGN_EXPLORER_API, HOME_EXPLORER_API } from '../config/constants'
+import { getClosestBlockByTimestamp } from '../utils/explorer'
+
+export function useClosestBlock(
+  searchHome: boolean,
+  fromHome: boolean,
+  receipt: Maybe<TransactionReceipt>,
+  timestamp: number
+) {
+  const { home, foreign } = useStateProvider()
+  const [blockNumber, setBlockNumber] = useState<number | null>(null)
+
+  useEffect(
+    () => {
+      if (!receipt || blockNumber || !timestamp) return
+
+      if (fromHome === searchHome) {
+        setBlockNumber(receipt.blockNumber)
+        return
+      }
+
+      const web3 = searchHome ? home.web3 : foreign.web3
+      if (!web3) return
+
+      const getBlock = async () => {
+        // try to fast-fetch closest block number from the chain explorer
+        try {
+          const api = searchHome ? HOME_EXPLORER_API : FOREIGN_EXPLORER_API
+          setBlockNumber(await getClosestBlockByTimestamp(api, timestamp))
+          return
+        } catch {}
+
+        const lastBlock = await web3.eth.getBlock('latest')
+        if (lastBlock.timestamp <= timestamp) {
+          setBlockNumber(lastBlock.number)
+          return
+        }
+
+        const oldBlock = await web3.eth.getBlock(Math.max(lastBlock.number - 10000, 1))
+        const blockDiff = lastBlock.number - oldBlock.number
+        const timeDiff = (lastBlock.timestamp as number) - (oldBlock.timestamp as number)
+        const averageBlockTime = timeDiff / blockDiff
+        let currentBlock = lastBlock
+
+        let prevBlockDiff = Infinity
+        while (true) {
+          const timeDiff = (currentBlock.timestamp as number) - timestamp
+          const blockDiff = Math.ceil(timeDiff / averageBlockTime)
+          if (Math.abs(blockDiff) < 5 || Math.abs(blockDiff) >= Math.abs(prevBlockDiff)) {
+            setBlockNumber(currentBlock.number - blockDiff - 5)
+            break
+          }
+
+          prevBlockDiff = blockDiff
+          currentBlock = await web3.eth.getBlock(currentBlock.number - blockDiff)
+        }
+      }
+
+      getBlock()
+    },
+    [blockNumber, foreign.web3, fromHome, home.web3, receipt, searchHome, timestamp]
+  )
+
+  return blockNumber
+}
--- a/alm/src/hooks/useMessageConfirmations.ts
+++ b/alm/src/hooks/useMessageConfirmations.ts
@@ -3,7 +3,6 @@ import { TransactionReceipt } from 'web3-eth'
 import { MessageObject } from '../utils/web3'
 import { useEffect, useState } from 'react'
 import { EventData } from 'web3-eth-contract'
-import { getAffirmationsSigned, getMessagesSigned } from '../utils/contract'
 import {
  BLOCK_RANGE,
  CONFIRMATIONS_STATUS,
@@ -12,9 +11,6 @@ import {
  VALIDATOR_CONFIRMATION_STATUS
 } from '../config/constants'
 import { homeBlockNumberProvider, foreignBlockNumberProvider } from '../services/BlockNumberProvider'
-import { checkSignaturesWaitingForBLocks } from '../utils/signatureWaitingForBlocks'
-import { getCollectedSignaturesEvent } from '../utils/getCollectedSignaturesEvent'
-import { checkWaitingBlocksForExecution } from '../utils/executionWaitingForBlocks'
 import { getConfirmationsForTx } from '../utils/getConfirmationsForTx'
 import { getFinalizationEvent } from '../utils/getFinalizationEvent'
 import {
@@ -29,7 +25,8 @@ export interface useMessageConfirmationsParams {
  message: MessageObject
  receipt: Maybe<TransactionReceipt>
  fromHome: boolean
-  timestamp: number
+  homeStartBlock: Maybe<number>
+  foreignStartBlock: Maybe<number>
  requiredSignatures: number
  validatorList: string[]
  blockConfirmations: number
@@ -57,17 +54,19 @@ export const useMessageConfirmations = ({
  message,
  receipt,
  fromHome,
-  timestamp,
+  homeStartBlock,
+  foreignStartBlock,
  requiredSignatures,
  validatorList,
  blockConfirmations
 }: useMessageConfirmationsParams) => {
  const { home, foreign } = useStateProvider()
-  const [confirmations, setConfirmations] = useState<Array<ConfirmationParam>>([])
+  const [confirmations, setConfirmations] = useState<ConfirmationParam[]>([])
  const [status, setStatus] = useState(CONFIRMATIONS_STATUS.UNDEFINED)
  const [waitingBlocks, setWaitingBlocks] = useState(false)
  const [waitingBlocksResolved, setWaitingBlocksResolved] = useState(false)
-  const [signatureCollected, setSignatureCollected] = useState(false)
+  const [signatureCollected, setSignatureCollected] = useState<boolean | string[]>(false)
+  const [executionEventsFetched, setExecutionEventsFetched] = useState(false)
  const [collectedSignaturesEvent, setCollectedSignaturesEvent] = useState<Maybe<EventData>>(null)
  const [executionData, setExecutionData] = useState<ExecutionData>({
    status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED,
@@ -83,155 +82,188 @@ export const useMessageConfirmations = ({
  const [pendingConfirmations, setPendingConfirmations] = useState(false)
  const [pendingExecution, setPendingExecution] = useState(false)

-  const existsConfirmation = (confirmationArray: ConfirmationParam[]) => {
-    const filteredList = confirmationArray.filter(
+  const existsConfirmation = (confirmationArray: ConfirmationParam[]) =>
+    confirmationArray.some(
      c => c.status !== VALIDATOR_CONFIRMATION_STATUS.UNDEFINED && c.status !== VALIDATOR_CONFIRMATION_STATUS.WAITING
    )
-    return filteredList.length > 0
-  }
+
+  // start watching blocks at the start
+  useEffect(
+    () => {
+      if (!home.web3 || !foreign.web3) return
+
+      homeBlockNumberProvider.start(home.web3)
+      foreignBlockNumberProvider.start(foreign.web3)
+    },
+    [foreign.web3, home.web3]
+  )

  // Check if the validators are waiting for block confirmations to verify the message
  useEffect(
    () => {
-      if (!receipt || !blockConfirmations) return
+      if (!receipt || !blockConfirmations || waitingBlocksResolved) return

-      const subscriptions: Array<number> = []
-
-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
+      let timeoutId: number

      const blockProvider = fromHome ? homeBlockNumberProvider : foreignBlockNumberProvider
      const interval = fromHome ? HOME_RPC_POLLING_INTERVAL : FOREIGN_RPC_POLLING_INTERVAL
-      const web3 = fromHome ? home.web3 : foreign.web3
-      blockProvider.start(web3)
-
      const targetBlock = receipt.blockNumber + blockConfirmations
+      const validatorsWaiting = validatorList.map(validator => ({
+        validator,
+        status: VALIDATOR_CONFIRMATION_STATUS.WAITING,
+        txHash: '',
+        timestamp: 0
+      }))

-      checkSignaturesWaitingForBLocks(
-        targetBlock,
-        setWaitingBlocks,
-        setWaitingBlocksResolved,
-        validatorList,
-        setConfirmations,
-        blockProvider,
-        interval,
-        subscriptions
-      )
+      const checkSignaturesWaitingForBLocks = () => {
+        const currentBlock = blockProvider.get()

-      return () => {
-        unsubscribe()
-        blockProvider.stop()
+        if (currentBlock && currentBlock >= targetBlock) {
+          setWaitingBlocksResolved(true)
+          setWaitingBlocks(false)
+        } else if (currentBlock) {
+          setWaitingBlocks(true)
+          setConfirmations(validatorsWaiting)
+          timeoutId = setTimeout(checkSignaturesWaitingForBLocks, interval)
+        } else {
+          timeoutId = setTimeout(checkSignaturesWaitingForBLocks, 500)
+        }
      }
+
+      checkSignaturesWaitingForBLocks()
+
+      return () => clearTimeout(timeoutId)
    },
-    [blockConfirmations, foreign.web3, fromHome, validatorList, home.web3, receipt]
+    [blockConfirmations, fromHome, receipt, validatorList, waitingBlocksResolved]
  )

  // The collected signature event is only fetched once the signatures are collected on tx from home to foreign, to calculate if
  // the execution tx on the foreign network is waiting for block confirmations
  // This is executed if the message is in Home to Foreign direction only
+  const hasCollectedSignatures = !!signatureCollected // true or string[]
  useEffect(
    () => {
-      if (!fromHome || !receipt || !home.web3 || !signatureCollected) return
+      if (!fromHome || !receipt || !home.web3 || !home.bridgeContract || !hasCollectedSignatures) return

-      const subscriptions: Array<number> = []
+      let timeoutId: number
+      let isCancelled = false

-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
+      const messageHash = home.web3.utils.soliditySha3Raw(message.data)
+      const contract = home.bridgeContract
+
+      const getCollectedSignaturesEvent = async (fromBlock: number, toBlock: number) => {
+        const currentBlock = homeBlockNumberProvider.get()
+
+        if (currentBlock) {
+          // prevent errors if the toBlock parameter is bigger than the latest
+          const securedToBlock = toBlock >= currentBlock ? currentBlock : toBlock
+          const events = await contract.getPastEvents('CollectedSignatures', {
+            fromBlock,
+            toBlock: securedToBlock
+          })
+          const event = events.find(e => e.returnValues.messageHash === messageHash)
+          if (event) {
+            setCollectedSignaturesEvent(event)
+          } else if (!isCancelled) {
+            timeoutId = setTimeout(() => getCollectedSignaturesEvent(securedToBlock, securedToBlock + BLOCK_RANGE), 500)
+          }
+        } else if (!isCancelled) {
+          timeoutId = setTimeout(() => getCollectedSignaturesEvent(fromBlock, toBlock), 500)
+        }
      }

-      homeBlockNumberProvider.start(home.web3)
-
-      const fromBlock = receipt.blockNumber
-      const toBlock = fromBlock + BLOCK_RANGE
-      const messageHash = home.web3.utils.soliditySha3Raw(message.data)
-
-      getCollectedSignaturesEvent(
-        home.web3,
-        home.bridgeContract,
-        fromBlock,
-        toBlock,
-        messageHash,
-        setCollectedSignaturesEvent,
-        subscriptions
-      )
+      getCollectedSignaturesEvent(receipt.blockNumber, receipt.blockNumber + BLOCK_RANGE)

      return () => {
-        unsubscribe()
-        homeBlockNumberProvider.stop()
+        clearTimeout(timeoutId)
+        isCancelled = true
      }
    },
-    [fromHome, home.bridgeContract, home.web3, message.data, receipt, signatureCollected]
+    [fromHome, home.bridgeContract, home.web3, message.data, receipt, hasCollectedSignatures]
  )

  // Check if the responsible validator is waiting for block confirmations to execute the message on foreign network
  // This is executed if the message is in Home to Foreign direction only
  useEffect(
    () => {
-      if (!fromHome || !home.web3 || !receipt || !collectedSignaturesEvent || !blockConfirmations) return
+      if (!fromHome || !home.web3 || !collectedSignaturesEvent || !blockConfirmations) return
+      if (waitingBlocksForExecutionResolved) return

-      const subscriptions: Array<number> = []
+      let timeoutId: number

-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
-
-      homeBlockNumberProvider.start(home.web3)
      const targetBlock = collectedSignaturesEvent.blockNumber + blockConfirmations

-      checkWaitingBlocksForExecution(
-        homeBlockNumberProvider,
-        HOME_RPC_POLLING_INTERVAL,
-        targetBlock,
-        collectedSignaturesEvent,
-        setWaitingBlocksForExecution,
-        setWaitingBlocksForExecutionResolved,
-        setExecutionData,
-        subscriptions
-      )
+      const checkWaitingBlocksForExecution = () => {
+        const currentBlock = homeBlockNumberProvider.get()

-      return () => {
-        unsubscribe()
-        homeBlockNumberProvider.stop()
+        if (currentBlock && currentBlock >= targetBlock) {
+          const undefinedExecutionState = {
+            status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED,
+            validator: collectedSignaturesEvent.returnValues.authorityResponsibleForRelay,
+            txHash: '',
+            timestamp: 0,
+            executionResult: false
+          }
+          setExecutionData(
+            (data: any) =>
+              data.status === VALIDATOR_CONFIRMATION_STATUS.UNDEFINED ||
+              data.status === VALIDATOR_CONFIRMATION_STATUS.WAITING
+                ? undefinedExecutionState
+                : data
+          )
+          setWaitingBlocksForExecutionResolved(true)
+          setWaitingBlocksForExecution(false)
+        } else if (currentBlock) {
+          setWaitingBlocksForExecution(true)
+          const waitingExecutionState = {
+            status: VALIDATOR_CONFIRMATION_STATUS.WAITING,
+            validator: collectedSignaturesEvent.returnValues.authorityResponsibleForRelay,
+            txHash: '',
+            timestamp: 0,
+            executionResult: false
+          }
+          setExecutionData(
+            (data: any) =>
+              data.status === VALIDATOR_CONFIRMATION_STATUS.UNDEFINED ||
+              data.status === VALIDATOR_CONFIRMATION_STATUS.WAITING
+                ? waitingExecutionState
+                : data
+          )
+          timeoutId = setTimeout(() => checkWaitingBlocksForExecution(), HOME_RPC_POLLING_INTERVAL)
+        } else {
+          timeoutId = setTimeout(() => checkWaitingBlocksForExecution(), 500)
+        }
      }
+
+      checkWaitingBlocksForExecution()
+
+      return () => clearTimeout(timeoutId)
    },
-    [collectedSignaturesEvent, fromHome, blockConfirmations, home.web3, receipt]
+    [collectedSignaturesEvent, fromHome, blockConfirmations, home.web3, waitingBlocksForExecutionResolved]
  )

  // Checks if validators verified the message
  // To avoid making extra requests, this is only executed when validators finished waiting for blocks confirmations
  useEffect(
    () => {
-      if (!waitingBlocksResolved || !timestamp || !requiredSignatures) return
+      if (!waitingBlocksResolved || !homeStartBlock || !requiredSignatures || !home.web3 || !home.bridgeContract) return
+      if (!validatorList || !validatorList.length) return

-      const subscriptions: Array<number> = []
-
-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
-
-      const confirmationContractMethod = fromHome ? getMessagesSigned : getAffirmationsSigned
+      let timeoutId: number
+      let isCancelled = false

      getConfirmationsForTx(
        message.data,
        home.web3,
        validatorList,
        home.bridgeContract,
-        confirmationContractMethod,
+        fromHome,
        setConfirmations,
        requiredSignatures,
        setSignatureCollected,
-        waitingBlocksResolved,
-        subscriptions,
-        timestamp,
+        id => (timeoutId = id),
+        () => isCancelled,
+        homeStartBlock,
        getValidatorFailedTransactionsForMessage,
        setFailedConfirmations,
        getValidatorPendingTransactionsForMessage,
@@ -240,7 +272,8 @@ export const useMessageConfirmations = ({
      )

      return () => {
-        unsubscribe()
+        clearTimeout(timeoutId)
+        isCancelled = true
      }
    },
    [
@@ -251,7 +284,7 @@ export const useMessageConfirmations = ({
      home.bridgeContract,
      requiredSignatures,
      waitingBlocksResolved,
-      timestamp
+      homeStartBlock
    ]
  )

@@ -262,38 +295,34 @@ export const useMessageConfirmations = ({
    () => {
      if ((fromHome && !waitingBlocksForExecutionResolved) || (!fromHome && !waitingBlocksResolved)) return

-      const subscriptions: Array<number> = []
-
-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
-
-      const contractEvent = fromHome ? 'RelayedMessage' : 'AffirmationCompleted'
      const bridgeContract = fromHome ? foreign.bridgeContract : home.bridgeContract
-      const providedWeb3 = fromHome ? foreign.web3 : home.web3
-      const interval = fromHome ? FOREIGN_RPC_POLLING_INTERVAL : HOME_RPC_POLLING_INTERVAL
+      const web3 = fromHome ? foreign.web3 : home.web3
+      const startBlock = fromHome ? foreignStartBlock : homeStartBlock
+      if (!startBlock || !bridgeContract || !web3) return
+
+      let timeoutId: number
+      let isCancelled = false

      getFinalizationEvent(
+        fromHome,
        bridgeContract,
-        contractEvent,
-        providedWeb3,
+        web3,
        setExecutionData,
-        waitingBlocksResolved,
        message,
-        interval,
-        subscriptions,
-        timestamp,
+        id => (timeoutId = id),
+        () => isCancelled,
+        startBlock,
        collectedSignaturesEvent,
        getExecutionFailedTransactionForMessage,
        setFailedExecution,
        getExecutionPendingTransactionsForMessage,
-        setPendingExecution
+        setPendingExecution,
+        setExecutionEventsFetched
      )

      return () => {
-        unsubscribe()
+        clearTimeout(timeoutId)
+        isCancelled = true
      }
    },
    [
@@ -305,8 +334,9 @@ export const useMessageConfirmations = ({
      home.web3,
      waitingBlocksResolved,
      waitingBlocksForExecutionResolved,
-      timestamp,
-      collectedSignaturesEvent
+      collectedSignaturesEvent,
+      foreignStartBlock,
+      homeStartBlock
    ]
  )

@@ -318,6 +348,9 @@ export const useMessageConfirmations = ({
          ? CONFIRMATIONS_STATUS.SUCCESS
          : CONFIRMATIONS_STATUS.SUCCESS_MESSAGE_FAILED
        setStatus(newStatus)
+
+        foreignBlockNumberProvider.stop()
+        homeBlockNumberProvider.stop()
      } else if (signatureCollected) {
        if (fromHome) {
          if (waitingBlocksForExecution) {
@@ -369,6 +402,9 @@ export const useMessageConfirmations = ({
    status,
    signatureCollected,
    executionData,
-    waitingBlocksResolved
+    setExecutionData,
+    waitingBlocksResolved,
+    executionEventsFetched,
+    setPendingExecution
  }
 }
--- a/alm/src/hooks/useTransactionFinder.ts
+++ b/alm/src/hooks/useTransactionFinder.ts
@@ -11,40 +11,23 @@ export const useTransactionFinder = ({ txHash, web3 }: { txHash: string; web3: M
    () => {
      if (!txHash || !web3) return

-      const subscriptions: number[] = []
+      let timeoutId: number

-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
-
-      const getReceipt = async (
-        web3: Web3,
-        txHash: string,
-        setReceipt: Function,
-        setStatus: Function,
-        subscriptions: number[]
-      ) => {
+      const getReceipt = async () => {
        const txReceipt = await web3.eth.getTransactionReceipt(txHash)
        setReceipt(txReceipt)

        if (!txReceipt) {
          setStatus(TRANSACTION_STATUS.NOT_FOUND)
-          const timeoutId = setTimeout(
-            () => getReceipt(web3, txHash, setReceipt, setStatus, subscriptions),
-            HOME_RPC_POLLING_INTERVAL
-          )
-          subscriptions.push(timeoutId)
+          timeoutId = setTimeout(getReceipt, HOME_RPC_POLLING_INTERVAL)
        } else {
          setStatus(TRANSACTION_STATUS.FOUND)
        }
      }

-      getReceipt(web3, txHash, setReceipt, setStatus, subscriptions)
-      return () => {
-        unsubscribe()
-      }
+      getReceipt()
+
+      return () => clearTimeout(timeoutId)
    },
    [txHash, web3]
  )
--- a/alm/src/hooks/useTransactionStatus.ts
+++ b/alm/src/hooks/useTransactionStatus.ts
@@ -31,19 +31,14 @@ export const useTransactionStatus = ({

  useEffect(
    () => {
-      const subscriptions: Array<number> = []
+      if (!chainId || !txHash || !home.chainId || !foreign.chainId || !home.web3 || !foreign.web3) return
+      const isHome = chainId === home.chainId
+      const web3 = isHome ? home.web3 : foreign.web3

-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
+      let timeoutId: number

      const getReceipt = async () => {
-        if (!chainId || !txHash || !home.chainId || !foreign.chainId || !home.web3 || !foreign.web3) return
        setLoading(true)
-        const isHome = chainId === home.chainId
-        const web3 = isHome ? home.web3 : foreign.web3

        let txReceipt

@@ -59,8 +54,7 @@ export const useTransactionStatus = ({
          setStatus(TRANSACTION_STATUS.NOT_FOUND)
          setDescription(getTransactionStatusDescription(TRANSACTION_STATUS.NOT_FOUND))
          setMessages([{ id: txHash, data: '' }])
-          const timeoutId = setTimeout(() => getReceipt(), HOME_RPC_POLLING_INTERVAL)
-          subscriptions.push(timeoutId)
+          timeoutId = setTimeout(() => getReceipt(), HOME_RPC_POLLING_INTERVAL)
        } else {
          const blockNumber = txReceipt.blockNumber
          const block = await getBlock(web3, blockNumber)
@@ -70,9 +64,9 @@ export const useTransactionStatus = ({
          if (txReceipt.status) {
            let bridgeMessages: Array<MessageObject>
            if (isHome) {
-              bridgeMessages = getHomeMessagesFromReceipt(txReceipt, home.web3, home.bridgeAddress)
+              bridgeMessages = getHomeMessagesFromReceipt(txReceipt, web3, home.bridgeAddress)
            } else {
-              bridgeMessages = getForeignMessagesFromReceipt(txReceipt, foreign.web3, foreign.bridgeAddress)
+              bridgeMessages = getForeignMessagesFromReceipt(txReceipt, web3, foreign.bridgeAddress)
            }

            if (bridgeMessages.length === 0) {
@@ -98,14 +92,9 @@ export const useTransactionStatus = ({
        setLoading(false)
      }

-      // unsubscribe from previous txHash
-      unsubscribe()
-
      getReceipt()
-      return () => {
-        // unsubscribe when unmount component
-        unsubscribe()
-      }
+
+      return () => clearTimeout(timeoutId)
    },
    [
      txHash,
--- a/alm/src/hooks/useValidatorContract.ts
+++ b/alm/src/hooks/useValidatorContract.ts
@@ -6,6 +6,7 @@ import { BRIDGE_VALIDATORS_ABI } from '../abis'
 import { useStateProvider } from '../state/StateProvider'
 import { TransactionReceipt } from 'web3-eth'
 import { foreignSnapshotProvider, homeSnapshotProvider, SnapshotProvider } from '../services/SnapshotProvider'
+import { FOREIGN_EXPLORER_API, HOME_EXPLORER_API } from '../config/constants'

 export interface useValidatorContractParams {
  fromHome: boolean
@@ -30,10 +31,12 @@ export const useValidatorContract = ({ receipt, fromHome }: useValidatorContract
    contract: Maybe<Contract>,
    receipt: TransactionReceipt,
    setResult: Function,
-    snapshotProvider: SnapshotProvider
+    snapshotProvider: SnapshotProvider,
+    web3: Web3,
+    api: string
  ) => {
    if (!contract) return
-    const result = await getRequiredSignatures(contract, receipt.blockNumber, snapshotProvider)
+    const result = await getRequiredSignatures(contract, receipt.blockNumber, snapshotProvider, web3, api)
    setResult(result)
  }

@@ -41,32 +44,35 @@ export const useValidatorContract = ({ receipt, fromHome }: useValidatorContract
    contract: Maybe<Contract>,
    receipt: TransactionReceipt,
    setResult: Function,
-    snapshotProvider: SnapshotProvider
+    snapshotProvider: SnapshotProvider,
+    web3: Web3,
+    api: string
  ) => {
    if (!contract) return
-    const result = await getValidatorList(contract, receipt.blockNumber, snapshotProvider)
+    const result = await getValidatorList(contract, receipt.blockNumber, snapshotProvider, web3, api)
    setResult(result)
  }

+  const web3 = fromHome ? home.web3 : foreign.web3
+  const api = fromHome ? HOME_EXPLORER_API : FOREIGN_EXPLORER_API
+  const bridgeContract = fromHome ? home.bridgeContract : foreign.bridgeContract
+  const snapshotProvider = fromHome ? homeSnapshotProvider : foreignSnapshotProvider
+
  useEffect(
    () => {
-      const web3 = fromHome ? home.web3 : foreign.web3
-      const bridgeContract = fromHome ? home.bridgeContract : foreign.bridgeContract
-
      if (!web3 || !bridgeContract) return
      callValidatorContract(bridgeContract, web3, setValidatorContract)
    },
-    [home.web3, foreign.web3, home.bridgeContract, foreign.bridgeContract, fromHome]
+    [web3, bridgeContract]
  )

  useEffect(
    () => {
-      if (!receipt) return
-      const snapshotProvider = fromHome ? homeSnapshotProvider : foreignSnapshotProvider
-      callRequiredSignatures(validatorContract, receipt, setRequiredSignatures, snapshotProvider)
-      callValidatorList(validatorContract, receipt, setValidatorList, snapshotProvider)
+      if (!web3 || !receipt) return
+      callRequiredSignatures(validatorContract, receipt, setRequiredSignatures, snapshotProvider, web3, api)
+      callValidatorList(validatorContract, receipt, setValidatorList, snapshotProvider, web3, api)
    },
-    [validatorContract, receipt, fromHome]
+    [validatorContract, receipt, web3, snapshotProvider, api]
  )

  return {
--- a/alm/src/services/BlockNumberProvider.ts
+++ b/alm/src/services/BlockNumberProvider.ts
@@ -1,6 +1,6 @@
 import Web3 from 'web3'
 import differenceInMilliseconds from 'date-fns/differenceInMilliseconds'
-import { HOME_RPC_POLLING_INTERVAL } from '../config/constants'
+import { FOREIGN_RPC_POLLING_INTERVAL, HOME_RPC_POLLING_INTERVAL } from '../config/constants'

 export class BlockNumberProvider {
  private running: number
@@ -61,4 +61,4 @@ export class BlockNumberProvider {
 }

 export const homeBlockNumberProvider = new BlockNumberProvider(HOME_RPC_POLLING_INTERVAL)
-export const foreignBlockNumberProvider = new BlockNumberProvider(HOME_RPC_POLLING_INTERVAL)
+export const foreignBlockNumberProvider = new BlockNumberProvider(FOREIGN_RPC_POLLING_INTERVAL)
--- a/alm/src/state/StateProvider.tsx
+++ b/alm/src/state/StateProvider.tsx
@@ -1,4 +1,4 @@
-import React, { createContext, ReactNode } from 'react'
+import React, { createContext, ReactNode, useState } from 'react'
 import { useNetwork } from '../hooks/useNetwork'
 import {
  HOME_RPC_URL,
@@ -25,6 +25,8 @@ export interface StateContext {
  home: BaseNetworkParams
  foreign: BaseNetworkParams
  loading: boolean
+  error: string
+  setError: Function
 }

 const initialState = {
@@ -42,7 +44,9 @@ const initialState = {
    bridgeAddress: FOREIGN_BRIDGE_ADDRESS,
    bridgeContract: null
  },
-  loading: true
+  loading: true,
+  error: '',
+  setError: () => {}
 }

 const StateContext = createContext<StateContext>(initialState)
@@ -54,6 +58,7 @@ export const StateProvider = ({ children }: { children: ReactNode }) => {
    homeWeb3: homeNetwork.web3,
    foreignWeb3: foreignNetwork.web3
  })
+  const [error, setError] = useState('')

  const value = {
    home: {
@@ -68,7 +73,9 @@ export const StateProvider = ({ children }: { children: ReactNode }) => {
      bridgeContract: foreignBridge,
      ...foreignNetwork
    },
-    loading: homeNetwork.loading || foreignNetwork.loading
+    loading: homeNetwork.loading || foreignNetwork.loading,
+    error,
+    setError
  }

  return <StateContext.Provider value={value}>{children}</StateContext.Provider>
--- a/alm/src/utils/tests/contracts.test.ts
+++ b/alm/src/utils/tests/contracts.test.ts
@@ -16,7 +16,7 @@ describe('getRequiredBlockConfirmations', () => {

  test('Should call requiredBlockConfirmations method if no events present', async () => {
    const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
        return []
      },
      methods: methodsBuilder('1')
@@ -37,7 +37,7 @@ describe('getRequiredBlockConfirmations', () => {
  })
  test('Should not call to get events if block number was included in the snapshot', async () => {
    const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => []),
+      getPastEvents: jest.fn().mockImplementation(async () => []),
      methods: methodsBuilder('3')
    } as unknown) as Contract

@@ -64,7 +64,7 @@ describe('getRequiredBlockConfirmations', () => {
  })
  test('Should call to get events if block number was not included in the snapshot', async () => {
    const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => [
+      getPastEvents: jest.fn().mockImplementation(async () => [
        {
          blockNumber: 9,
          returnValues: {
@@ -102,7 +102,7 @@ describe('getRequiredBlockConfirmations', () => {
  })
  test('Should use the most updated event', async () => {
    const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => [
+      getPastEvents: jest.fn().mockImplementation(async () => [
        {
          blockNumber: 9,
          returnValues: {
@@ -141,7 +141,7 @@ describe('getRequiredBlockConfirmations', () => {
 describe('getRequiredSignatures', () => {
  test('Should not call to get events if block number was included in the snapshot', async () => {
    const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => [])
+      getPastEvents: jest.fn().mockImplementation(async () => [])
    } as unknown) as Contract

    const snapshotProvider = ({
@@ -173,7 +173,7 @@ describe('getRequiredSignatures', () => {
  })
  test('Should call to get events if block number is higher than the snapshot block number', async () => {
    const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => [
+      getPastEvents: jest.fn().mockImplementation(async () => [
        {
          blockNumber: 15,
          returnValues: {
@@ -216,7 +216,7 @@ describe('getRequiredSignatures', () => {
  })
  test('Should use the most updated event before the block number', async () => {
    const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => [
+      getPastEvents: jest.fn().mockImplementation(async () => [
        {
          blockNumber: 15,
          returnValues: {
@@ -270,7 +270,7 @@ describe('getValidatorList', () => {
  test('Should return the current validator list if no events found', async () => {
    const currentValidators = [validator1, validator2, validator3]
    const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => []),
+      getPastEvents: jest.fn().mockImplementation(async () => []),
      methods: methodsBuilder(currentValidators)
    } as unknown) as Contract

@@ -301,7 +301,7 @@ describe('getValidatorList', () => {
  test('If validator was added later from snapshot it should not include it', async () => {
    const currentValidators = [validator1, validator2, validator3]
    const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => []),
+      getPastEvents: jest.fn().mockImplementation(async () => []),
      methods: methodsBuilder(currentValidators)
    } as unknown) as Contract

@@ -340,7 +340,7 @@ describe('getValidatorList', () => {
  test('If validator was added later from chain it should not include it', async () => {
    const currentValidators = [validator1, validator2, validator3]
    const contract = ({
-      getPastEvents: jest.fn().mockImplementation(event => {
+      getPastEvents: jest.fn().mockImplementation(async event => {
        if (event === 'ValidatorAdded') {
          return [
            {
@@ -385,7 +385,7 @@ describe('getValidatorList', () => {
  test('If validator was removed later from snapshot it should include it', async () => {
    const currentValidators = [validator1, validator2]
    const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => []),
+      getPastEvents: jest.fn().mockImplementation(async () => []),
      methods: methodsBuilder(currentValidators)
    } as unknown) as Contract

@@ -424,7 +424,7 @@ describe('getValidatorList', () => {
  test('If validator was removed later from chain it should include it', async () => {
    const currentValidators = [validator1, validator2]
    const contract = ({
-      getPastEvents: jest.fn().mockImplementation(event => {
+      getPastEvents: jest.fn().mockImplementation(async event => {
        if (event === 'ValidatorRemoved') {
          return [
            {
--- a/alm/src/utils/tests/explorer.test.ts
+++ b/alm/src/utils/tests/explorer.test.ts
@@ -17,19 +17,33 @@ const otherAddress = '0xD4075FB57fCf038bFc702c915Ef9592534bED5c1'

 describe('getFailedTransactions', () => {
  test('should only return failed transactions', async () => {
-    const transactions = [{ isError: '0' }, { isError: '1' }, { isError: '0' }, { isError: '1' }, { isError: '1' }]
+    const to = otherAddress
+    const transactions = [
+      { isError: '0', to },
+      { isError: '1', to },
+      { isError: '0', to },
+      { isError: '1', to },
+      { isError: '1', to }
+    ]

    const fetchAccountTransactions = jest.fn().mockImplementation(() => transactions)
-    const result = await getFailedTransactions('', '', 0, 1, '', fetchAccountTransactions)
+    const result = await getFailedTransactions('', to, 0, 1, '', fetchAccountTransactions)
    expect(result.length).toEqual(3)
  })
 })
 describe('getSuccessTransactions', () => {
  test('should only return success transactions', async () => {
-    const transactions = [{ isError: '0' }, { isError: '1' }, { isError: '0' }, { isError: '1' }, { isError: '1' }]
+    const to = otherAddress
+    const transactions = [
+      { isError: '0', to },
+      { isError: '1', to },
+      { isError: '0', to },
+      { isError: '1', to },
+      { isError: '1', to }
+    ]

    const fetchAccountTransactions = jest.fn().mockImplementation(() => transactions)
-    const result = await getSuccessTransactions('', '', 0, 1, '', fetchAccountTransactions)
+    const result = await getSuccessTransactions('', to, 0, 1, '', fetchAccountTransactions)
    expect(result.length).toEqual(2)
  })
 })
@@ -74,8 +88,8 @@ describe('getExecutionFailedTransactionForMessage', () => {
        account: '',
        to: '',
        messageData,
-        startTimestamp: 0,
-        endTimestamp: 1
+        startBlock: 0,
+        endBlock: 1
      },
      fetchAccountTransactions
    )
--- a/alm/src/utils/tests/getConfirmationsForTx.test.ts
+++ b/alm/src/utils/tests/getConfirmationsForTx.test.ts
@@ -9,7 +9,7 @@ import { BasicConfirmationParam } from '../../hooks/useMessageConfirmations'

 jest.mock('../validatorConfirmationHelpers')

-const getValidatorSuccessTransaction = helpers.getValidatorSuccessTransaction as jest.Mock<any>
+const getSuccessExecutionTransaction = helpers.getSuccessExecutionTransaction as jest.Mock<any>
 const getValidatorConfirmation = helpers.getValidatorConfirmation as jest.Mock<any>
 const getValidatorFailedTransaction = helpers.getValidatorFailedTransaction as jest.Mock<any>
 const getValidatorPendingTransaction = helpers.getValidatorPendingTransaction as jest.Mock<any>
@@ -24,10 +24,17 @@ const validator1 = '0x45b96809336A8b714BFbdAB3E4B5e0fe5d839908'
 const validator2 = '0xAe8bFfc8BBc6AAa9E21ED1E4e4957fe798BEA25f'
 const validator3 = '0x285A6eB779be4db94dA65e2F3518B1c5F0f71244'
 const validatorList = [validator1, validator2, validator3]
-const bridgeContract = {} as Contract
-const confirmationContractMethod = () => {}
+const signature =
+  '0x519d704bceed17423daa79c20531cc34fc27a4be6e53fc5069a8023019188ca4519d704bceed17423daa79c20531cc34fc27a4be6e53fc5069a8023019188ca4'
+const bridgeContract = {
+  methods: {
+    signature: () => ({
+      call: () => signature
+    })
+  }
+} as Contract
 const requiredSignatures = 2
-const waitingBlocksResolved = true
+const isCancelled = () => false
 let subscriptions: Array<number> = []
 const timestamp = 1594045859
 const getFailedTransactions = (): Promise<APITransaction[]> => Promise.resolve([])
@@ -42,7 +49,7 @@ const unsubscribe = () => {

 beforeEach(() => {
  // Clear all instances and calls to constructor and all methods:
-  getValidatorSuccessTransaction.mockClear()
+  getSuccessExecutionTransaction.mockClear()
  getValidatorConfirmation.mockClear()
  getValidatorFailedTransaction.mockClear()
  getValidatorPendingTransaction.mockClear()
@@ -54,7 +61,7 @@ describe('getConfirmationsForTx', () => {
      validator,
      status: validator !== validator3 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
    }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
      validator: validatorData.validator,
      status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
      txHash: '',
@@ -83,12 +90,12 @@ describe('getConfirmationsForTx', () => {
      web3,
      validatorList,
      bridgeContract,
-      confirmationContractMethod,
+      true,
      setResult,
      requiredSignatures,
      setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      getFailedTransactions,
      setFailedConfirmations,
@@ -102,9 +109,10 @@ describe('getConfirmationsForTx', () => {
    expect(subscriptions.length).toEqual(1)
    expect(setResult).toBeCalledTimes(2)
    expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
-    expect(setSignatureCollected).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
+    expect(setSignatureCollected).toBeCalledTimes(2)
    expect(setSignatureCollected.mock.calls[0][0]).toEqual(true)
+    expect(setSignatureCollected.mock.calls[1][0]).toEqual([signature, signature])

    expect(getValidatorFailedTransaction).toBeCalledTimes(1)
    expect(setFailedConfirmations).toBeCalledTimes(1)
@@ -114,14 +122,16 @@ describe('getConfirmationsForTx', () => {
    expect(setPendingConfirmations).toBeCalledTimes(1)
    expect(setPendingConfirmations.mock.calls[0][0]).toEqual(false)

-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    expect(res1).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
-        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.NOT_REQUIRED }
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
      ])
    )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res2).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
@@ -134,7 +144,7 @@ describe('getConfirmationsForTx', () => {
      validator,
      status: validator === validator3 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
    }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
      validator: validatorData.validator,
      status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
      txHash: '',
@@ -163,12 +173,12 @@ describe('getConfirmationsForTx', () => {
      web3,
      validatorList,
      bridgeContract,
-      confirmationContractMethod,
+      true,
      setResult,
      requiredSignatures,
      setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      getFailedTransactions,
      setFailedConfirmations,
@@ -179,9 +189,9 @@ describe('getConfirmationsForTx', () => {

    unsubscribe()

-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(1)
    expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
    expect(setSignatureCollected).toBeCalledTimes(1)
    expect(setSignatureCollected.mock.calls[0][0]).toEqual(false)

@@ -198,7 +208,7 @@ describe('getConfirmationsForTx', () => {
      validator,
      status: validator !== validator3 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
    }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
      validator: validatorData.validator,
      status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
      txHash: validatorData.validator !== validator3 ? '0x123' : '',
@@ -227,12 +237,12 @@ describe('getConfirmationsForTx', () => {
      web3,
      validatorList,
      bridgeContract,
-      confirmationContractMethod,
+      true,
      setResult,
      requiredSignatures,
      setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      getFailedTransactions,
      setFailedConfirmations,
@@ -244,11 +254,12 @@ describe('getConfirmationsForTx', () => {
    unsubscribe()

    expect(subscriptions.length).toEqual(0)
-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(3)
    expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
-    expect(setSignatureCollected).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
+    expect(setSignatureCollected).toBeCalledTimes(2)
    expect(setSignatureCollected.mock.calls[0][0]).toEqual(true)
+    expect(setSignatureCollected.mock.calls[1][0]).toEqual([signature, signature])

    expect(getValidatorFailedTransaction).toBeCalledTimes(1)
    expect(setFailedConfirmations).toBeCalledTimes(1)
@@ -258,14 +269,24 @@ describe('getConfirmationsForTx', () => {
    expect(setPendingConfirmations).toBeCalledTimes(1)
    expect(setPendingConfirmations.mock.calls[0][0]).toEqual(false)

-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    const res3 = setResult.mock.calls[2][0](res2)
+    expect(res1).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res2).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.NOT_REQUIRED }
      ])
    )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res3).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
@@ -283,7 +304,7 @@ describe('getConfirmationsForTx', () => {
          ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS
          : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
    }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
      validator: validatorData.validator,
      status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
      txHash: validatorData.validator !== validator3 && validatorData.validator !== validator4 ? '0x123' : '',
@@ -315,12 +336,12 @@ describe('getConfirmationsForTx', () => {
      web3,
      validatorList,
      bridgeContract,
-      confirmationContractMethod,
+      true,
      setResult,
      requiredSignatures,
      setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      getFailedTransactions,
      setFailedConfirmations,
@@ -332,11 +353,12 @@ describe('getConfirmationsForTx', () => {
    unsubscribe()

    expect(subscriptions.length).toEqual(0)
-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(4)
    expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
-    expect(setSignatureCollected).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
+    expect(setSignatureCollected).toBeCalledTimes(2)
    expect(setSignatureCollected.mock.calls[0][0]).toEqual(true)
+    expect(setSignatureCollected.mock.calls[1][0]).toEqual([signature, signature])

    expect(getValidatorFailedTransaction).toBeCalledTimes(1)
    expect(setFailedConfirmations).toBeCalledTimes(1)
@@ -346,7 +368,27 @@ describe('getConfirmationsForTx', () => {
    expect(setPendingConfirmations).toBeCalledTimes(1)
    expect(setPendingConfirmations.mock.calls[0][0]).toEqual(false)

-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    const res3 = setResult.mock.calls[2][0](res2)
+    const res4 = setResult.mock.calls[3][0](res3)
+    expect(res1).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator4, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res2).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
+        { validator: validator4, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res3).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
@@ -354,7 +396,7 @@ describe('getConfirmationsForTx', () => {
        { validator: validator4, status: VALIDATOR_CONFIRMATION_STATUS.NOT_REQUIRED }
      ])
    )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res4).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
@@ -372,7 +414,7 @@ describe('getConfirmationsForTx', () => {
      validator,
      status: validator === validator1 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
    }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
      validator: validatorData.validator,
      status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
      txHash: validatorData.validator === validator1 ? '0x123' : '',
@@ -407,12 +449,12 @@ describe('getConfirmationsForTx', () => {
      web3,
      validatorList,
      bridgeContract,
-      confirmationContractMethod,
+      true,
      setResult,
      requiredSignatures,
      setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      getFailedTransactions,
      setFailedConfirmations,
@@ -423,9 +465,9 @@ describe('getConfirmationsForTx', () => {

    unsubscribe()

-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(4)
    expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
    expect(setSignatureCollected).toBeCalledTimes(1)
    expect(setSignatureCollected.mock.calls[0][0]).toEqual(false)

@@ -437,14 +479,32 @@ describe('getConfirmationsForTx', () => {
    expect(setPendingConfirmations).toBeCalledTimes(1)
    expect(setPendingConfirmations.mock.calls[0][0]).toEqual(true)

-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    const res3 = setResult.mock.calls[2][0](res2)
+    const res4 = setResult.mock.calls[3][0](res3)
+    expect(res1).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res2).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.PENDING, txHash: '0x123', timestamp: 123 }
+      ])
+    )
+    expect(res3).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.PENDING, txHash: '0x123', timestamp: 123 }
      ])
    )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res4).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
@@ -461,7 +521,7 @@ describe('getConfirmationsForTx', () => {
      validator,
      status: validator === validator1 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
    }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
      validator: validatorData.validator,
      status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
      txHash: validatorData.validator === validator1 ? '0x123' : '',
@@ -493,12 +553,12 @@ describe('getConfirmationsForTx', () => {
      web3,
      validatorList,
      bridgeContract,
-      confirmationContractMethod,
+      true,
      setResult,
      requiredSignatures,
      setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      getFailedTransactions,
      setFailedConfirmations,
@@ -510,9 +570,9 @@ describe('getConfirmationsForTx', () => {
    unsubscribe()

    expect(subscriptions.length).toEqual(0)
-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(3)
    expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
    expect(setSignatureCollected).toBeCalledTimes(1)
    expect(setSignatureCollected.mock.calls[0][0]).toEqual(false)

@@ -524,14 +584,24 @@ describe('getConfirmationsForTx', () => {
    expect(setPendingConfirmations).toBeCalledTimes(1)
    expect(setPendingConfirmations.mock.calls[0][0]).toEqual(false)

-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    const res3 = setResult.mock.calls[2][0](res2)
+    expect(res1).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res2).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 }
      ])
    )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res3).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
@@ -555,7 +625,7 @@ describe('getConfirmationsForTx', () => {
        status:
          validator !== validator2 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
      }))
-    getValidatorSuccessTransaction
+    getSuccessExecutionTransaction
      .mockImplementationOnce(() => async (validatorData: BasicConfirmationParam) => ({
        validator: validatorData.validator,
        status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
@@ -604,12 +674,12 @@ describe('getConfirmationsForTx', () => {
      web3,
      validatorList,
      bridgeContract,
-      confirmationContractMethod,
+      true,
      setResult,
      requiredSignatures,
      setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      getFailedTransactions,
      setFailedConfirmations,
@@ -620,9 +690,9 @@ describe('getConfirmationsForTx', () => {

    unsubscribe()

-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(4)
    expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
    expect(setSignatureCollected).toBeCalledTimes(1)
    expect(setSignatureCollected.mock.calls[0][0]).toEqual(false)

@@ -634,14 +704,32 @@ describe('getConfirmationsForTx', () => {
    expect(setPendingConfirmations).toBeCalledTimes(1)
    expect(setPendingConfirmations.mock.calls[0][0]).toEqual(true)

-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    const res3 = setResult.mock.calls[2][0](res2)
+    const res4 = setResult.mock.calls[3][0](res3)
+    expect(res1).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res2).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.PENDING, txHash: '0x123', timestamp: 123 }
+      ])
+    )
+    expect(res3).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.PENDING, txHash: '0x123', timestamp: 123 }
      ])
    )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res4).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
@@ -654,12 +742,12 @@ describe('getConfirmationsForTx', () => {
      web3,
      validatorList,
      bridgeContract,
-      confirmationContractMethod,
+      true,
      setResult,
      requiredSignatures,
      setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      getFailedTransactions,
      setFailedConfirmations,
@@ -670,12 +758,13 @@ describe('getConfirmationsForTx', () => {

    unsubscribe()

-    expect(setResult).toBeCalledTimes(4)
+    expect(setResult).toBeCalledTimes(7)
    expect(getValidatorConfirmation).toBeCalledTimes(2)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(2)
-    expect(setSignatureCollected).toBeCalledTimes(2)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(2)
+    expect(setSignatureCollected).toBeCalledTimes(3)
    expect(setSignatureCollected.mock.calls[0][0]).toEqual(false)
    expect(setSignatureCollected.mock.calls[1][0]).toEqual(true)
+    expect(setSignatureCollected.mock.calls[2][0]).toEqual([signature, signature])

    expect(getValidatorFailedTransaction).toBeCalledTimes(2)
    expect(setFailedConfirmations).toBeCalledTimes(2)
@@ -687,14 +776,24 @@ describe('getConfirmationsForTx', () => {
    expect(setPendingConfirmations.mock.calls[0][0]).toEqual(true)
    expect(setPendingConfirmations.mock.calls[1][0]).toEqual(false)

-    expect(setResult.mock.calls[2][0]()).toEqual(
+    const res5 = setResult.mock.calls[4][0](res4)
+    const res6 = setResult.mock.calls[5][0](res5)
+    const res7 = setResult.mock.calls[6][0](res6)
+    expect(res5).toEqual(
      expect.arrayContaining([
-        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS }
      ])
    )
-    expect(setResult.mock.calls[3][0]).toEqual(
+    expect(res6).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS }
+      ])
+    )
+    expect(res7).toEqual(
      expect.arrayContaining([
        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
--- a/alm/src/utils/tests/getFinalizationEvent.test.ts
+++ b/alm/src/utils/tests/getFinalizationEvent.test.ts
@@ -4,7 +4,6 @@ import Web3 from 'web3'
 import { getFinalizationEvent } from '../getFinalizationEvent'
 import { VALIDATOR_CONFIRMATION_STATUS } from '../../config/constants'

-const eventName = 'RelayedMessage'
 const timestamp = 1594045859
 const validator1 = '0x45b96809336A8b714BFbdAB3E4B5e0fe5d839908'
 const txHash = '0xdab36c9210e7e45fb82af10ffe4960461e41661dce0c9cd36b2843adaa1df156'
@@ -20,12 +19,11 @@ const web3 = ({
    toChecksumAddress: (a: string) => a
  }
 } as unknown) as Web3
-const waitingBlocksResolved = true
 const message = {
  id: '0x123',
  data: '0x123456789'
 }
-const interval = 10000
+const isCancelled = () => false
 let subscriptions: Array<number> = []

 const event = {
@@ -50,7 +48,7 @@ beforeEach(() => {
 describe('getFinalizationEvent', () => {
  test('should get finalization event and not try to get failed or pending transactions', async () => {
    const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
        return [event]
      }
    } as unknown) as Contract
@@ -61,22 +59,23 @@ describe('getFinalizationEvent', () => {
    const setFailedExecution = jest.fn()
    const getPendingExecution = jest.fn()
    const setPendingExecution = jest.fn()
+    const setExecutionEventsFetched = jest.fn()

    await getFinalizationEvent(
+      true,
      contract,
-      eventName,
      web3,
      setResult,
-      waitingBlocksResolved,
      message,
-      interval,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      collectedSignaturesEvent,
      getFailedExecution,
      setFailedExecution,
      getPendingExecution,
-      setPendingExecution
+      setPendingExecution,
+      setExecutionEventsFetched
    )

    unsubscribe()
@@ -99,7 +98,7 @@ describe('getFinalizationEvent', () => {
  })
  test('should retry to get finalization event and not try to get failed or pending transactions if foreign to home transaction', async () => {
    const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
        return []
      }
    } as unknown) as Contract
@@ -110,22 +109,23 @@ describe('getFinalizationEvent', () => {
    const setFailedExecution = jest.fn()
    const getPendingExecution = jest.fn()
    const setPendingExecution = jest.fn()
+    const setExecutionEventsFetched = jest.fn()

    await getFinalizationEvent(
+      true,
      contract,
-      eventName,
      web3,
      setResult,
-      waitingBlocksResolved,
      message,
-      interval,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      collectedSignaturesEvent,
      getFailedExecution,
      setFailedExecution,
      getPendingExecution,
-      setPendingExecution
+      setPendingExecution,
+      setExecutionEventsFetched
    )

    unsubscribe()
@@ -141,7 +141,7 @@ describe('getFinalizationEvent', () => {
  })
  test('should retry to get finalization event and try to get failed and pending transactions if home to foreign transaction', async () => {
    const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
        return []
      },
      options: {
@@ -159,22 +159,23 @@ describe('getFinalizationEvent', () => {
    const setFailedExecution = jest.fn()
    const getPendingExecution = jest.fn().mockResolvedValue([])
    const setPendingExecution = jest.fn()
+    const setExecutionEventsFetched = jest.fn()

    await getFinalizationEvent(
+      true,
      contract,
-      eventName,
      web3,
      setResult,
-      waitingBlocksResolved,
      message,
-      interval,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      collectedSignaturesEvent,
      getFailedExecution,
      setFailedExecution,
      getPendingExecution,
-      setPendingExecution
+      setPendingExecution,
+      setExecutionEventsFetched
    )

    unsubscribe()
@@ -190,7 +191,7 @@ describe('getFinalizationEvent', () => {
  })
  test('should retry to get finalization event and not to try to get failed transaction if pending transactions found if home to foreign transaction', async () => {
    const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
        return []
      },
      options: {
@@ -208,22 +209,23 @@ describe('getFinalizationEvent', () => {
    const setFailedExecution = jest.fn()
    const getPendingExecution = jest.fn().mockResolvedValue([{ hash: txHash }])
    const setPendingExecution = jest.fn()
+    const setExecutionEventsFetched = jest.fn()

    await getFinalizationEvent(
+      true,
      contract,
-      eventName,
      web3,
      setResult,
-      waitingBlocksResolved,
      message,
-      interval,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      collectedSignaturesEvent,
      getFailedExecution,
      setFailedExecution,
      getPendingExecution,
-      setPendingExecution
+      setPendingExecution,
+      setExecutionEventsFetched
    )

    unsubscribe()
@@ -246,7 +248,7 @@ describe('getFinalizationEvent', () => {
  })
  test('should retry to get finalization event even if failed transaction found if home to foreign transaction', async () => {
    const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
        return []
      },
      options: {
@@ -264,22 +266,23 @@ describe('getFinalizationEvent', () => {
    const setFailedExecution = jest.fn()
    const getPendingExecution = jest.fn().mockResolvedValue([])
    const setPendingExecution = jest.fn()
+    const setExecutionEventsFetched = jest.fn()

    await getFinalizationEvent(
+      true,
      contract,
-      eventName,
      web3,
      setResult,
-      waitingBlocksResolved,
      message,
-      interval,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
      timestamp,
      collectedSignaturesEvent,
      getFailedExecution,
      setFailedExecution,
      getPendingExecution,
-      setPendingExecution
+      setPendingExecution,
+      setExecutionEventsFetched
    )

    unsubscribe()
--- a/alm/src/utils/contract.ts
+++ b/alm/src/utils/contract.ts
@@ -1,18 +1,33 @@
 import { Contract } from 'web3-eth-contract'
 import { EventData } from 'web3-eth-contract'
 import { SnapshotProvider } from '../services/SnapshotProvider'
+import { getLogs } from './explorer'
+import Web3 from 'web3'
+
+const getPastEventsWithFallback = (
+  api: string,
+  web3: Web3 | null,
+  contract: Contract,
+  eventName: string,
+  options: any
+) =>
+  contract
+    .getPastEvents(eventName, options)
+    .catch(() => (api && web3 ? getLogs(api, web3, contract, eventName, options) : []))

 export const getRequiredBlockConfirmations = async (
  contract: Contract,
  blockNumber: number,
-  snapshotProvider: SnapshotProvider
+  snapshotProvider: SnapshotProvider,
+  web3: Web3 | null = null,
+  api: string = ''
 ) => {
  const eventsFromSnapshot = snapshotProvider.requiredBlockConfirmationEvents(blockNumber)
  const snapshotBlockNumber = snapshotProvider.snapshotBlockNumber()

  let contractEvents: EventData[] = []
  if (blockNumber > snapshotBlockNumber) {
-    contractEvents = await contract.getPastEvents('RequiredBlockConfirmationChanged', {
+    contractEvents = await getPastEventsWithFallback(api, web3, contract, 'RequiredBlockConfirmationChanged', {
      fromBlock: snapshotBlockNumber + 1,
      toBlock: blockNumber
    })
@@ -38,14 +53,16 @@ export const getValidatorAddress = (contract: Contract) => contract.methods.vali
 export const getRequiredSignatures = async (
  contract: Contract,
  blockNumber: number,
-  snapshotProvider: SnapshotProvider
+  snapshotProvider: SnapshotProvider,
+  web3: Web3 | null = null,
+  api: string = ''
 ) => {
  const eventsFromSnapshot = snapshotProvider.requiredSignaturesEvents(blockNumber)
  const snapshotBlockNumber = snapshotProvider.snapshotBlockNumber()

  let contractEvents: EventData[] = []
  if (blockNumber > snapshotBlockNumber) {
-    contractEvents = await contract.getPastEvents('RequiredSignaturesChanged', {
+    contractEvents = await getPastEventsWithFallback(api, web3, contract, 'RequiredSignaturesChanged', {
      fromBlock: snapshotBlockNumber + 1,
      toBlock: blockNumber
    })
@@ -59,7 +76,13 @@ export const getRequiredSignatures = async (
  return parseInt(requiredSignatures)
 }

-export const getValidatorList = async (contract: Contract, blockNumber: number, snapshotProvider: SnapshotProvider) => {
+export const getValidatorList = async (
+  contract: Contract,
+  blockNumber: number,
+  snapshotProvider: SnapshotProvider,
+  web3: Web3 | null = null,
+  api: string = ''
+) => {
  const addedEventsFromSnapshot = snapshotProvider.validatorAddedEvents(blockNumber)
  const removedEventsFromSnapshot = snapshotProvider.validatorRemovedEvents(blockNumber)
  const snapshotBlockNumber = snapshotProvider.snapshotBlockNumber()
@@ -67,10 +90,10 @@ export const getValidatorList = async (contract: Contract, blockNumber: number,
  const fromBlock = snapshotBlockNumber > blockNumber ? snapshotBlockNumber + 1 : blockNumber
  const [currentList, added, removed] = await Promise.all([
    contract.methods.validatorList().call(),
-    contract.getPastEvents('ValidatorAdded', {
+    getPastEventsWithFallback(api, web3, contract, 'ValidatorAdded', {
      fromBlock
    }),
-    contract.getPastEvents('ValidatorRemoved', {
+    getPastEventsWithFallback(api, web3, contract, 'ValidatorRemoved', {
      fromBlock
    })
  ])
--- a/alm/src/utils/executionWaitingForBlocks.ts
+++ b/alm/src/utils/executionWaitingForBlocks.ts
@@ -1,58 +0,0 @@
-import { BlockNumberProvider } from '../services/BlockNumberProvider'
-import { VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
-import { EventData } from 'web3-eth-contract'
-
-export const checkWaitingBlocksForExecution = async (
-  blockProvider: BlockNumberProvider,
-  interval: number,
-  targetBlock: number,
-  collectedSignaturesEvent: EventData,
-  setWaitingBlocksForExecution: Function,
-  setWaitingBlocksForExecutionResolved: Function,
-  setExecutionData: Function,
-  subscriptions: number[]
-) => {
-  const currentBlock = blockProvider.get()
-
-  if (currentBlock && currentBlock >= targetBlock) {
-    setExecutionData({
-      status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED,
-      validator: collectedSignaturesEvent.returnValues.authorityResponsibleForRelay,
-      txHash: '',
-      timestamp: 0,
-      executionResult: false
-    })
-    setWaitingBlocksForExecutionResolved(true)
-    setWaitingBlocksForExecution(false)
-    blockProvider.stop()
-  } else {
-    let nextInterval = interval
-    if (!currentBlock) {
-      nextInterval = 500
-    } else {
-      setWaitingBlocksForExecution(true)
-      setExecutionData({
-        status: VALIDATOR_CONFIRMATION_STATUS.WAITING,
-        validator: collectedSignaturesEvent.returnValues.authorityResponsibleForRelay,
-        txHash: '',
-        timestamp: 0,
-        executionResult: false
-      })
-    }
-    const timeoutId = setTimeout(
-      () =>
-        checkWaitingBlocksForExecution(
-          blockProvider,
-          interval,
-          targetBlock,
-          collectedSignaturesEvent,
-          setWaitingBlocksForExecution,
-          setWaitingBlocksForExecutionResolved,
-          setExecutionData,
-          subscriptions
-        ),
-      nextInterval
-    )
-    subscriptions.push(timeoutId)
-  }
-}
--- a/alm/src/utils/explorer.ts
+++ b/alm/src/utils/explorer.ts
@@ -1,10 +1,15 @@
 import {
+  BLOCK_RANGE,
  EXECUTE_AFFIRMATION_HASH,
  EXECUTE_SIGNATURES_HASH,
  FOREIGN_EXPLORER_API,
  HOME_EXPLORER_API,
+  MAX_TX_SEARCH_BLOCK_RANGE,
  SUBMIT_SIGNATURE_HASH
 } from '../config/constants'
+import { AbiItem } from 'web3-utils'
+import Web3 from 'web3'
+import { Contract } from 'web3-eth-contract'

 export interface APITransaction {
  timeStamp: string
@@ -12,6 +17,7 @@ export interface APITransaction {
  input: string
  to: string
  hash: string
+  blockNumber: string
 }

 export interface APIPendingTransaction {
@@ -27,110 +33,54 @@ export interface PendingTransactionsParams {

 export interface AccountTransactionsParams {
  account: string
-  to: string
-  startTimestamp: number
-  endTimestamp: number
+  startBlock: number
+  endBlock: number
  api: string
 }

-export interface GetFailedTransactionParams {
-  account: string
-  to: string
-  messageData: string
-  startTimestamp: number
-  endTimestamp: number
-}
-
 export interface GetPendingTransactionParams {
  account: string
  to: string
  messageData: string
 }

-export const fetchAccountTransactionsFromBlockscout = async ({
-  account,
-  to,
-  startTimestamp,
-  endTimestamp,
-  api
-}: AccountTransactionsParams): Promise<APITransaction[]> => {
-  const url = `${api}?module=account&action=txlist&address=${account}&filterby=from=${account}&to=${to}&starttimestamp=${startTimestamp}&endtimestamp=${endTimestamp}`
-
-  try {
-    const result = await fetch(url).then(res => res.json())
-    if (result.status === '0') {
-      return []
-    }
-
-    return result.result
-  } catch (e) {
-    console.log(e)
-    return []
-  }
+export interface GetTransactionParams extends GetPendingTransactionParams {
+  startBlock: number
+  endBlock: number
 }

-export const getBlockByTimestampUrl = (api: string, timestamp: number) =>
-  `${api}&module=block&action=getblocknobytime&timestamp=${timestamp}&closest=before`
+export const fetchAccountTransactions = async ({ account, startBlock, endBlock, api }: AccountTransactionsParams) => {
+  const url = new URL(api)
+  url.searchParams.append('module', 'account')
+  url.searchParams.append('action', 'txlist')
+  url.searchParams.append('address', account)
+  url.searchParams.append('filterby', 'from')
+  url.searchParams.append('startblock', startBlock.toString())
+  url.searchParams.append('endblock', endBlock.toString())

-export const fetchAccountTransactionsFromEtherscan = async ({
-  account,
-  to,
-  startTimestamp,
-  endTimestamp,
-  api
-}: AccountTransactionsParams): Promise<APITransaction[]> => {
-  const startBlockUrl = getBlockByTimestampUrl(api, startTimestamp)
-  const endBlockUrl = getBlockByTimestampUrl(api, endTimestamp)
-  let fromBlock = 0
-  let toBlock = 9999999999999
-  try {
-    const [fromBlockResult, toBlockResult] = await Promise.all([
-      fetch(startBlockUrl).then(res => res.json()),
-      fetch(endBlockUrl).then(res => res.json())
-    ])
+  const result = await fetch(url.toString()).then(res => res.json())

-    if (fromBlockResult.status !== '0') {
-      fromBlock = parseInt(fromBlockResult.result)
-    }
-
-    if (toBlockResult.status !== '0') {
-      toBlock = parseInt(toBlockResult.result)
-    }
-  } catch (e) {
-    console.log(e)
+  if (result.message === 'No transactions found') {
    return []
  }

-  const url = `${api}&module=account&action=txlist&address=${account}&startblock=${fromBlock}&endblock=${toBlock}`
-
-  try {
-    const result = await fetch(url).then(res => res.json())
-
-    if (result.status === '0') {
-      return []
-    }
-
-    const toAddressLowerCase = to.toLowerCase()
-    const transactions: APITransaction[] = result.result
-    return transactions.filter(t => t.to.toLowerCase() === toAddressLowerCase)
-  } catch (e) {
-    console.log(e)
-    return []
-  }
-}
-
-export const fetchAccountTransactions = (api: string) => {
-  return api.includes('blockscout') ? fetchAccountTransactionsFromBlockscout : fetchAccountTransactionsFromEtherscan
+  return result.result
 }

 export const fetchPendingTransactions = async ({
  account,
  api
 }: PendingTransactionsParams): Promise<APIPendingTransaction[]> => {
-  const url = `${api}?module=account&action=pendingtxlist&address=${account}`
+  if (!api.includes('blockscout')) {
+    return []
+  }
+  const url = new URL(api)
+  url.searchParams.append('module', 'account')
+  url.searchParams.append('action', 'pendingtxlist')
+  url.searchParams.append('address', account)

  try {
-    const result = await fetch(url).then(res => res.json())
+    const result = await fetch(url.toString()).then(res => res.json())
    if (result.status === '0') {
      return []
    }
@@ -141,30 +91,135 @@ export const fetchPendingTransactions = async ({
  }
 }

+export const getClosestBlockByTimestamp = async (api: string, timestamp: number): Promise<number> => {
+  if (api.includes('blockscout')) {
+    throw new Error('Blockscout does not support getblocknobytime')
+  }
+
+  const url = new URL(api)
+  url.searchParams.append('module', 'block')
+  url.searchParams.append('action', 'getblocknobytime')
+  url.searchParams.append('timestamp', timestamp.toString())
+  url.searchParams.append('closest', 'before')
+
+  const blockNumber = await fetch(url.toString()).then(res => res.json())
+
+  return parseInt(blockNumber.result)
+}
+
+// fast version of fetchAccountTransactions
+// sequentially fetches transactions in small batches
+// caches the result
+const transactionsCache: { [key: string]: { lastBlock: number; transactions: APITransaction[] } } = {}
+export const getAccountTransactions = async ({
+  account,
+  startBlock,
+  endBlock,
+  api
+}: AccountTransactionsParams): Promise<APITransaction[]> => {
+  const key = `${account}-${startBlock}-${api}`
+
+  // initialize empty cache if it doesn't exist yet
+  if (!transactionsCache[key]) {
+    transactionsCache[key] = { lastBlock: startBlock - 1, transactions: [] }
+  }
+
+  // if cache contains events up to block X,
+  // new batch is fetched for range [X + 1, X + 1 + BLOCK_RANGE]
+  const newStartBlock = transactionsCache[key].lastBlock + 1
+  const newEndBlock = newStartBlock + BLOCK_RANGE
+
+  // search for new transactions only if max allowed block range is not yet exceeded
+  if (newEndBlock <= startBlock + MAX_TX_SEARCH_BLOCK_RANGE) {
+    const newTransactions = await fetchAccountTransactions({
+      account,
+      startBlock: newStartBlock,
+      endBlock: newEndBlock,
+      api
+    })
+
+    const transactions = transactionsCache[key].transactions.concat(...newTransactions)
+
+    // cache updated transactions list
+    transactionsCache[key].transactions = transactions
+
+    // enbBlock is assumed to be the current block number of the chain
+    // if the whole range is finalized, last block can be safely updated to the end of the range
+    // this works even if there are no transactions in the list
+    if (newEndBlock < endBlock) {
+      transactionsCache[key].lastBlock = newEndBlock
+    } else if (transactions.length > 0) {
+      transactionsCache[key].lastBlock = parseInt(transactions[transactions.length - 1].blockNumber, 10)
+    }
+
+    return transactions
+  }
+
+  console.warn(`Reached max transaction searching range, returning previously cached transactions for ${account}`)
+  return transactionsCache[key].transactions
+}
+
+export const getLogs = async (
+  api: string,
+  web3: Web3,
+  contract: Contract,
+  event: string,
+  options: { fromBlock: number; toBlock: number | 'latest'; topics: (string | null)[] }
+) => {
+  const abi = contract.options.jsonInterface.find((abi: AbiItem) => abi.type === 'event' && abi.name === event)!
+
+  const url = new URL(api)
+  url.searchParams.append('module', 'logs')
+  url.searchParams.append('action', 'getLogs')
+  url.searchParams.append('address', contract.options.address)
+  url.searchParams.append('fromBlock', options.fromBlock.toString())
+  url.searchParams.append('toBlock', (options.toBlock || 'latest').toString())
+
+  const topics = [web3.eth.abi.encodeEventSignature(abi), ...(options.topics || [])]
+  for (let i = 0; i < topics.length; i++) {
+    if (topics[i] !== null) {
+      url.searchParams.append(`topic${i}`, topics[i] as string)
+      for (let j = 0; j < i; j++) {
+        url.searchParams.append(`topic${j}_${i}_opr`, 'and')
+      }
+    }
+  }
+
+  const logs = await fetch(url.toString()).then(res => res.json())
+
+  return logs.result.map((log: any) => ({
+    transactionHash: log.transactionHash,
+    blockNumber: parseInt(log.blockNumber.slice(2), 16),
+    returnValues: web3.eth.abi.decodeLog(abi.inputs!, log.data, log.topics.slice(1))
+  }))
+}
+
+const filterReceiver = (to: string) => (tx: APITransaction) => tx.to.toLowerCase() === to.toLowerCase()
+
 export const getFailedTransactions = async (
  account: string,
  to: string,
-  startTimestamp: number,
-  endTimestamp: number,
+  startBlock: number,
+  endBlock: number,
  api: string,
-  fetchAccountTransactions: (args: AccountTransactionsParams) => Promise<APITransaction[]>
+  getAccountTransactionsMethod = getAccountTransactions
 ): Promise<APITransaction[]> => {
-  const transactions = await fetchAccountTransactions({ account, to, startTimestamp, endTimestamp, api })
+  const transactions = await getAccountTransactionsMethod({ account, startBlock, endBlock, api })

-  return transactions.filter(t => t.isError !== '0')
+  return transactions.filter(t => t.isError !== '0').filter(filterReceiver(to))
 }

 export const getSuccessTransactions = async (
  account: string,
  to: string,
-  startTimestamp: number,
-  endTimestamp: number,
+  startBlock: number,
+  endBlock: number,
  api: string,
-  fetchAccountTransactions: (args: AccountTransactionsParams) => Promise<APITransaction[]>
+  getAccountTransactionsMethod = getAccountTransactions
 ): Promise<APITransaction[]> => {
-  const transactions = await fetchAccountTransactions({ account, to, startTimestamp, endTimestamp, api })
+  const transactions = await getAccountTransactionsMethod({ account, startBlock, endBlock, api })

-  return transactions.filter(t => t.isError === '0')
+  return transactions.filter(t => t.isError === '0').filter(filterReceiver(to))
 }

 export const filterValidatorSignatureTransaction = (
@@ -183,17 +238,10 @@ export const getValidatorFailedTransactionsForMessage = async ({
  account,
  to,
  messageData,
-  startTimestamp,
-  endTimestamp
-}: GetFailedTransactionParams): Promise<APITransaction[]> => {
-  const failedTransactions = await getFailedTransactions(
-    account,
-    to,
-    startTimestamp,
-    endTimestamp,
-    HOME_EXPLORER_API,
-    fetchAccountTransactionsFromBlockscout
-  )
+  startBlock,
+  endBlock
+}: GetTransactionParams): Promise<APITransaction[]> => {
+  const failedTransactions = await getFailedTransactions(account, to, startBlock, endBlock, HOME_EXPLORER_API)

  return filterValidatorSignatureTransaction(failedTransactions, messageData)
 }
@@ -202,33 +250,19 @@ export const getValidatorSuccessTransactionsForMessage = async ({
  account,
  to,
  messageData,
-  startTimestamp,
-  endTimestamp
-}: GetFailedTransactionParams): Promise<APITransaction[]> => {
-  const transactions = await getSuccessTransactions(
-    account,
-    to,
-    startTimestamp,
-    endTimestamp,
-    HOME_EXPLORER_API,
-    fetchAccountTransactionsFromBlockscout
-  )
+  startBlock,
+  endBlock
+}: GetTransactionParams): Promise<APITransaction[]> => {
+  const transactions = await getSuccessTransactions(account, to, startBlock, endBlock, HOME_EXPLORER_API)

  return filterValidatorSignatureTransaction(transactions, messageData)
 }

 export const getExecutionFailedTransactionForMessage = async (
-  { account, to, messageData, startTimestamp, endTimestamp }: GetFailedTransactionParams,
+  { account, to, messageData, startBlock, endBlock }: GetTransactionParams,
  getFailedTransactionsMethod = getFailedTransactions
 ): Promise<APITransaction[]> => {
-  const failedTransactions = await getFailedTransactionsMethod(
-    account,
-    to,
-    startTimestamp,
-    endTimestamp,
-    FOREIGN_EXPLORER_API,
-    fetchAccountTransactions(FOREIGN_EXPLORER_API)
-  )
+  const failedTransactions = await getFailedTransactionsMethod(account, to, startBlock, endBlock, FOREIGN_EXPLORER_API)

  const messageDataValue = messageData.replace('0x', '')
  return failedTransactions.filter(t => t.input.includes(EXECUTE_SIGNATURES_HASH) && t.input.includes(messageDataValue))
--- a/alm/src/utils/getCollectedSignaturesEvent.ts
+++ b/alm/src/utils/getCollectedSignaturesEvent.ts
@@ -1,53 +0,0 @@
-import Web3 from 'web3'
-import { Contract, EventData } from 'web3-eth-contract'
-import { homeBlockNumberProvider } from '../services/BlockNumberProvider'
-import { BLOCK_RANGE } from '../config/constants'
-
-export const getCollectedSignaturesEvent = async (
-  web3: Maybe<Web3>,
-  contract: Maybe<Contract>,
-  fromBlock: number,
-  toBlock: number,
-  messageHash: string,
-  setCollectedSignaturesEvent: Function,
-  subscriptions: number[]
-) => {
-  if (!web3 || !contract) return
-  const currentBlock = homeBlockNumberProvider.get()
-
-  let events: EventData[] = []
-  let securedToBlock = toBlock
-  if (currentBlock) {
-    // prevent errors if the toBlock parameter is bigger than the latest
-    securedToBlock = toBlock >= currentBlock ? currentBlock : toBlock
-    events = await contract.getPastEvents('CollectedSignatures', {
-      fromBlock,
-      toBlock: securedToBlock
-    })
-  }
-
-  const filteredEvents = events.filter(e => e.returnValues.messageHash === messageHash)
-
-  if (filteredEvents.length) {
-    const event = filteredEvents[0]
-    setCollectedSignaturesEvent(event)
-    homeBlockNumberProvider.stop()
-  } else {
-    const newFromBlock = currentBlock ? securedToBlock : fromBlock
-    const newToBlock = currentBlock ? toBlock + BLOCK_RANGE : toBlock
-    const timeoutId = setTimeout(
-      () =>
-        getCollectedSignaturesEvent(
-          web3,
-          contract,
-          newFromBlock,
-          newToBlock,
-          messageHash,
-          setCollectedSignaturesEvent,
-          subscriptions
-        ),
-      500
-    )
-    subscriptions.push(timeoutId)
-  }
-}
--- a/alm/src/utils/getConfirmationsForTx.ts
+++ b/alm/src/utils/getConfirmationsForTx.ts
@@ -1,82 +1,91 @@
 import Web3 from 'web3'
 import { Contract } from 'web3-eth-contract'
 import { HOME_RPC_POLLING_INTERVAL, VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
-import {
-  GetFailedTransactionParams,
-  APITransaction,
-  APIPendingTransaction,
-  GetPendingTransactionParams
-} from './explorer'
+import { GetTransactionParams, APITransaction, APIPendingTransaction, GetPendingTransactionParams } from './explorer'
+import { getAffirmationsSigned, getMessagesSigned } from './contract'
 import {
  getValidatorConfirmation,
  getValidatorFailedTransaction,
  getValidatorPendingTransaction,
-  getValidatorSuccessTransaction
+  getSuccessExecutionTransaction
 } from './validatorConfirmationHelpers'
-import { ConfirmationParam } from '../hooks/useMessageConfirmations'
+import { BasicConfirmationParam, ConfirmationParam } from '../hooks/useMessageConfirmations'
+
+const mergeConfirmations = (oldConfirmations: BasicConfirmationParam[], newConfirmations: BasicConfirmationParam[]) => {
+  const confirmations = [...oldConfirmations]
+  newConfirmations.forEach(validatorData => {
+    const index = confirmations.findIndex(e => e.validator === validatorData.validator)
+    const currentStatus = confirmations[index].status
+    const newStatus = validatorData.status
+    if (
+      (validatorData as ConfirmationParam).txHash ||
+      (newStatus !== currentStatus && newStatus !== VALIDATOR_CONFIRMATION_STATUS.UNDEFINED)
+    ) {
+      confirmations[index] = validatorData
+    }
+  })
+  return confirmations
+}

 export const getConfirmationsForTx = async (
  messageData: string,
-  web3: Maybe<Web3>,
+  web3: Web3,
  validatorList: string[],
-  bridgeContract: Maybe<Contract>,
-  confirmationContractMethod: Function,
+  bridgeContract: Contract,
+  fromHome: boolean,
  setResult: Function,
  requiredSignatures: number,
  setSignatureCollected: Function,
-  waitingBlocksResolved: boolean,
-  subscriptions: number[],
-  timestamp: number,
-  getFailedTransactions: (args: GetFailedTransactionParams) => Promise<APITransaction[]>,
+  setTimeoutId: (timeoutId: number) => void,
+  isCancelled: () => boolean,
+  startBlock: number,
+  getFailedTransactions: (args: GetTransactionParams) => Promise<APITransaction[]>,
  setFailedConfirmations: Function,
  getPendingTransactions: (args: GetPendingTransactionParams) => Promise<APIPendingTransaction[]>,
  setPendingConfirmations: Function,
-  getSuccessTransactions: (args: GetFailedTransactionParams) => Promise<APITransaction[]>
+  getSuccessTransactions: (args: GetTransactionParams) => Promise<APITransaction[]>
 ) => {
-  if (!web3 || !validatorList || !validatorList.length || !bridgeContract || !waitingBlocksResolved) return
+  const confirmationContractMethod = fromHome ? getMessagesSigned : getAffirmationsSigned

-  // If all the information was not collected, then it should retry
-  let shouldRetry = false
  const hashMsg = web3.utils.soliditySha3Raw(messageData)
  let validatorConfirmations = await Promise.all(
    validatorList.map(getValidatorConfirmation(web3, hashMsg, bridgeContract, confirmationContractMethod))
  )

-  const successConfirmations = validatorConfirmations.filter(c => c.status === VALIDATOR_CONFIRMATION_STATUS.SUCCESS)
-
-  setResult((prevConfirmations: ConfirmationParam[]) => {
-    if (prevConfirmations && prevConfirmations.length) {
-      successConfirmations.forEach(validatorData => {
-        const index = prevConfirmations.findIndex(e => e.validator === validatorData.validator)
-        validatorConfirmations[index] = validatorData
-      })
-      return prevConfirmations
-    } else {
-      return validatorConfirmations
+  const updateConfirmations = (confirmations: BasicConfirmationParam[]) => {
+    if (confirmations.length === 0) {
+      return
    }
-  })
+    validatorConfirmations = mergeConfirmations(validatorConfirmations, confirmations)
+    setResult((currentConfirmations: BasicConfirmationParam[]) => {
+      if (currentConfirmations && currentConfirmations.length) {
+        return mergeConfirmations(currentConfirmations, confirmations)
+      }
+      return confirmations
+    })
+  }

+  const successConfirmations = validatorConfirmations.filter(c => c.status === VALIDATOR_CONFIRMATION_STATUS.SUCCESS)
  const notSuccessConfirmations = validatorConfirmations.filter(c => c.status !== VALIDATOR_CONFIRMATION_STATUS.SUCCESS)
+  const hasEnoughSignatures = successConfirmations.length === requiredSignatures
+
+  updateConfirmations(validatorConfirmations)
+  setSignatureCollected(hasEnoughSignatures)

  // If signatures not collected, look for pending transactions
-  let pendingConfirmationsResult = false
-  if (successConfirmations.length !== requiredSignatures) {
+  if (!hasEnoughSignatures) {
    // Check if confirmation is pending
    const validatorPendingConfirmationsChecks = await Promise.all(
      notSuccessConfirmations.map(getValidatorPendingTransaction(bridgeContract, messageData, getPendingTransactions))
    )
+
    const validatorPendingConfirmations = validatorPendingConfirmationsChecks.filter(
      c => c.status === VALIDATOR_CONFIRMATION_STATUS.PENDING
    )
-
-    validatorPendingConfirmations.forEach(validatorData => {
-      const index = validatorConfirmations.findIndex(e => e.validator === validatorData.validator)
-      validatorConfirmations[index] = validatorData
-    })
-
-    if (validatorPendingConfirmations.length > 0) {
-      pendingConfirmationsResult = true
-    }
+    updateConfirmations(validatorPendingConfirmations)
+    setPendingConfirmations(validatorPendingConfirmations.length > 0)
+  } else {
+    setPendingConfirmations(false)
  }

  const undefinedConfirmations = validatorConfirmations.filter(
@@ -84,99 +93,79 @@ export const getConfirmationsForTx = async (
  )

  // Check if confirmation failed
-  let failedConfirmationsResult = false
  const validatorFailedConfirmationsChecks = await Promise.all(
    undefinedConfirmations.map(
-      getValidatorFailedTransaction(bridgeContract, messageData, timestamp, getFailedTransactions)
+      getValidatorFailedTransaction(bridgeContract, messageData, startBlock, getFailedTransactions)
    )
  )
  const validatorFailedConfirmations = validatorFailedConfirmationsChecks.filter(
    c => c.status === VALIDATOR_CONFIRMATION_STATUS.FAILED
  )
-  validatorFailedConfirmations.forEach(validatorData => {
-    const index = validatorConfirmations.findIndex(e => e.validator === validatorData.validator)
-    validatorConfirmations[index] = validatorData
-  })
-  const messageConfirmationsFailed = validatorFailedConfirmations.length > validatorList.length - requiredSignatures
-  if (messageConfirmationsFailed) {
-    failedConfirmationsResult = true
-  }
+  setFailedConfirmations(validatorFailedConfirmations.length > validatorList.length - requiredSignatures)
+  updateConfirmations(validatorFailedConfirmations)

  const missingConfirmations = validatorConfirmations.filter(
    c => c.status === VALIDATOR_CONFIRMATION_STATUS.UNDEFINED || c.status === VALIDATOR_CONFIRMATION_STATUS.PENDING
  )

-  if (successConfirmations.length !== requiredSignatures && missingConfirmations.length > 0) {
-    shouldRetry = true
-  }
-
-  let signatureCollectedResult = false
-  if (successConfirmations.length === requiredSignatures) {
+  if (hasEnoughSignatures) {
    // If signatures collected, it should set other signatures not found as not required
    const notRequiredConfirmations = missingConfirmations.map(c => ({
      validator: c.validator,
      status: VALIDATOR_CONFIRMATION_STATUS.NOT_REQUIRED
    }))
+    updateConfirmations(notRequiredConfirmations)

-    notRequiredConfirmations.forEach(validatorData => {
-      const index = validatorConfirmations.findIndex(e => e.validator === validatorData.validator)
-      validatorConfirmations[index] = validatorData
-    })
-    signatureCollectedResult = true
+    if (fromHome) {
+      // fetch collected signatures for possible manual processing
+      setSignatureCollected(
+        await Promise.all(
+          Array.from(Array(requiredSignatures).keys()).map(i => bridgeContract.methods.signature(hashMsg, i).call())
+        )
+      )
+    }
  }

  // get transactions from success signatures
  const successConfirmationWithData = await Promise.all(
-    validatorConfirmations
-      .filter(c => c.status === VALIDATOR_CONFIRMATION_STATUS.SUCCESS)
-      .map(getValidatorSuccessTransaction(bridgeContract, messageData, timestamp, getSuccessTransactions))
+    successConfirmations.map(
+      getSuccessExecutionTransaction(web3, bridgeContract, fromHome, messageData, startBlock, getSuccessTransactions)
+    )
  )

  const successConfirmationWithTxFound = successConfirmationWithData.filter(v => v.txHash !== '')
+  updateConfirmations(successConfirmationWithTxFound)

-  const updatedValidatorConfirmations = [...validatorConfirmations]
-
-  if (successConfirmationWithTxFound.length > 0) {
-    successConfirmationWithTxFound.forEach(validatorData => {
-      const index = updatedValidatorConfirmations.findIndex(e => e.validator === validatorData.validator)
-      updatedValidatorConfirmations[index] = validatorData
-    })
-  }
-
-  // Set results
-  setResult(updatedValidatorConfirmations)
-  setFailedConfirmations(failedConfirmationsResult)
-  setPendingConfirmations(pendingConfirmationsResult)
-  setSignatureCollected(signatureCollectedResult)
-
-  // Retry if not all transaction were found for validator confirmations
-  if (successConfirmationWithTxFound.length < successConfirmationWithData.length) {
-    shouldRetry = true
-  }
-
-  if (shouldRetry) {
-    const timeoutId = setTimeout(
-      () =>
-        getConfirmationsForTx(
-          messageData,
-          web3,
-          validatorList,
-          bridgeContract,
-          confirmationContractMethod,
-          setResult,
-          requiredSignatures,
-          setSignatureCollected,
-          waitingBlocksResolved,
-          subscriptions,
-          timestamp,
-          getFailedTransactions,
-          setFailedConfirmations,
-          getPendingTransactions,
-          setPendingConfirmations,
-          getSuccessTransactions
-        ),
-      HOME_RPC_POLLING_INTERVAL
-    )
-    subscriptions.push(timeoutId)
+  // retry if not all signatures are collected and some confirmations are still missing
+  // or some success transactions were not fetched successfully
+  if (
+    (!hasEnoughSignatures && missingConfirmations.length > 0) ||
+    successConfirmationWithTxFound.length < successConfirmationWithData.length
+  ) {
+    if (!isCancelled()) {
+      const timeoutId = setTimeout(
+        () =>
+          getConfirmationsForTx(
+            messageData,
+            web3,
+            validatorList,
+            bridgeContract,
+            fromHome,
+            setResult,
+            requiredSignatures,
+            setSignatureCollected,
+            setTimeoutId,
+            isCancelled,
+            startBlock,
+            getFailedTransactions,
+            setFailedConfirmations,
+            getPendingTransactions,
+            setPendingConfirmations,
+            getSuccessTransactions
+          ),
+        HOME_RPC_POLLING_INTERVAL
+      )
+      setTimeoutId(timeoutId)
+    }
  }
 }
--- a/alm/src/utils/getFinalizationEvent.ts
+++ b/alm/src/utils/getFinalizationEvent.ts
@@ -1,40 +1,51 @@
 import { Contract, EventData } from 'web3-eth-contract'
 import Web3 from 'web3'
-import { CACHE_KEY_EXECUTION_FAILED, THREE_DAYS_TIMESTAMP, VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
+import {
+  CACHE_KEY_EXECUTION_FAILED,
+  FOREIGN_EXPLORER_API,
+  FOREIGN_RPC_POLLING_INTERVAL,
+  HOME_EXPLORER_API,
+  HOME_RPC_POLLING_INTERVAL,
+  VALIDATOR_CONFIRMATION_STATUS
+} from '../config/constants'
 import { ExecutionData } from '../hooks/useMessageConfirmations'
 import {
  APIPendingTransaction,
  APITransaction,
-  GetFailedTransactionParams,
-  GetPendingTransactionParams
+  GetTransactionParams,
+  GetPendingTransactionParams,
+  getLogs
 } from './explorer'
 import { getBlock, MessageObject } from './web3'
 import validatorsCache from '../services/ValidatorsCache'
+import { foreignBlockNumberProvider, homeBlockNumberProvider } from '../services/BlockNumberProvider'

-export const getFinalizationEvent = async (
-  contract: Maybe<Contract>,
+const getPastEventsWithFallback = (api: string, web3: Web3, contract: Contract, eventName: string, options: any) =>
+  contract.getPastEvents(eventName, options).catch(
+    () =>
+      api
+        ? getLogs(api, web3, contract, eventName, {
+            fromBlock: options.fromBlock,
+            toBlock: options.toBlock,
+            topics: [null, null, options.filter.messageId]
+          })
+        : []
+  )
+
+export const getSuccessExecutionData = async (
+  contract: Contract,
  eventName: string,
-  web3: Maybe<Web3>,
-  setResult: React.Dispatch<React.SetStateAction<ExecutionData>>,
-  waitingBlocksResolved: boolean,
-  message: MessageObject,
-  interval: number,
-  subscriptions: number[],
-  timestamp: number,
-  collectedSignaturesEvent: Maybe<EventData>,
-  getFailedExecution: (args: GetFailedTransactionParams) => Promise<APITransaction[]>,
-  setFailedExecution: Function,
-  getPendingExecution: (args: GetPendingTransactionParams) => Promise<APIPendingTransaction[]>,
-  setPendingExecution: Function
+  web3: Web3,
+  messageId: string,
+  api: string = ''
 ) => {
-  if (!contract || !web3 || !waitingBlocksResolved) return
  // Since it filters by the message id, only one event will be fetched
  // so there is no need to limit the range of the block to reduce the network traffic
-  const events: EventData[] = await contract.getPastEvents(eventName, {
+  const events: EventData[] = await getPastEventsWithFallback(api, web3, contract, eventName, {
    fromBlock: 0,
    toBlock: 'latest',
    filter: {
-      messageId: message.id
+      messageId
    }
  })
  if (events.length > 0) {
@@ -47,14 +58,42 @@ export const getFinalizationEvent = async (
    const blockTimestamp = typeof block.timestamp === 'string' ? parseInt(block.timestamp) : block.timestamp
    const validatorAddress = web3.utils.toChecksumAddress(txReceipt.from)

-    setResult({
+    return {
      status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
      validator: validatorAddress,
      txHash: event.transactionHash,
      timestamp: blockTimestamp,
      executionResult: event.returnValues.status
-    })
+    }
+  }
+  return null
+}
+
+export const getFinalizationEvent = async (
+  fromHome: boolean,
+  contract: Contract,
+  web3: Web3,
+  setResult: React.Dispatch<React.SetStateAction<ExecutionData>>,
+  message: MessageObject,
+  setTimeoutId: (timeoutId: number) => void,
+  isCancelled: () => boolean,
+  startBlock: number,
+  collectedSignaturesEvent: Maybe<EventData>,
+  getFailedExecution: (args: GetTransactionParams) => Promise<APITransaction[]>,
+  setFailedExecution: Function,
+  getPendingExecution: (args: GetPendingTransactionParams) => Promise<APIPendingTransaction[]>,
+  setPendingExecution: Function,
+  setExecutionEventsFetched: Function
+) => {
+  const eventName = fromHome ? 'RelayedMessage' : 'AffirmationCompleted'
+  const api = fromHome ? FOREIGN_EXPLORER_API : HOME_EXPLORER_API
+
+  const successExecutionData = await getSuccessExecutionData(contract, eventName, web3, message.id, api)
+
+  if (successExecutionData) {
+    setResult(successExecutionData)
  } else {
+    setExecutionEventsFetched(true)
    // If event is defined, it means it is a message from Home to Foreign
    if (collectedSignaturesEvent) {
      const validator = collectedSignaturesEvent.returnValues.authorityResponsibleForRelay
@@ -82,14 +121,15 @@ export const getFinalizationEvent = async (
      } else {
        const validatorExecutionCacheKey = `${CACHE_KEY_EXECUTION_FAILED}${validator}-${message.id}`
        const failedFromCache = validatorsCache.get(validatorExecutionCacheKey)
+        const blockProvider = fromHome ? foreignBlockNumberProvider : homeBlockNumberProvider

        if (!failedFromCache) {
          const failedTransactions = await getFailedExecution({
            account: validator,
            to: contract.options.address,
            messageData: message.data,
-            startTimestamp: timestamp,
-            endTimestamp: timestamp + THREE_DAYS_TIMESTAMP
+            startBlock,
+            endBlock: blockProvider.get() || 0
          })

          if (failedTransactions.length > 0) {
@@ -112,26 +152,28 @@ export const getFinalizationEvent = async (
      }
    }

-    const timeoutId = setTimeout(
-      () =>
-        getFinalizationEvent(
-          contract,
-          eventName,
-          web3,
-          setResult,
-          waitingBlocksResolved,
-          message,
-          interval,
-          subscriptions,
-          timestamp,
-          collectedSignaturesEvent,
-          getFailedExecution,
-          setFailedExecution,
-          getPendingExecution,
-          setPendingExecution
-        ),
-      interval
-    )
-    subscriptions.push(timeoutId)
+    if (!isCancelled()) {
+      const timeoutId = setTimeout(
+        () =>
+          getFinalizationEvent(
+            fromHome,
+            contract,
+            web3,
+            setResult,
+            message,
+            setTimeoutId,
+            isCancelled,
+            startBlock,
+            collectedSignaturesEvent,
+            getFailedExecution,
+            setFailedExecution,
+            getPendingExecution,
+            setPendingExecution,
+            setExecutionEventsFetched
+          ),
+        fromHome ? FOREIGN_RPC_POLLING_INTERVAL : HOME_RPC_POLLING_INTERVAL
+      )
+      setTimeoutId(timeoutId)
+    }
  }
 }
--- a/alm/src/utils/signatureWaitingForBlocks.ts
+++ b/alm/src/utils/signatureWaitingForBlocks.ts
@@ -1,50 +0,0 @@
-import { VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
-import { BlockNumberProvider } from '../services/BlockNumberProvider'
-
-export const checkSignaturesWaitingForBLocks = async (
-  targetBlock: number,
-  setWaitingStatus: Function,
-  setWaitingBlocksResolved: Function,
-  validatorList: string[],
-  setConfirmations: Function,
-  blockProvider: BlockNumberProvider,
-  interval: number,
-  subscriptions: number[]
-) => {
-  const currentBlock = blockProvider.get()
-
-  if (currentBlock && currentBlock >= targetBlock) {
-    setWaitingBlocksResolved(true)
-    setWaitingStatus(false)
-    blockProvider.stop()
-  } else {
-    let nextInterval = interval
-    if (!currentBlock) {
-      nextInterval = 500
-    } else {
-      const validatorsWaiting = validatorList.map(validator => {
-        return {
-          validator,
-          status: VALIDATOR_CONFIRMATION_STATUS.WAITING
-        }
-      })
-      setWaitingStatus(true)
-      setConfirmations(validatorsWaiting)
-    }
-    const timeoutId = setTimeout(
-      () =>
-        checkSignaturesWaitingForBLocks(
-          targetBlock,
-          setWaitingStatus,
-          setWaitingBlocksResolved,
-          validatorList,
-          setConfirmations,
-          blockProvider,
-          interval,
-          subscriptions
-        ),
-      nextInterval
-    )
-    subscriptions.push(timeoutId)
-  }
-}
--- a/alm/src/utils/signatures.ts
+++ b/alm/src/utils/signatures.ts
@@ -0,0 +1,26 @@
+import Web3 from 'web3'
+
+function strip0x(s: string) {
+  return Web3.utils.isHexStrict(s) ? s.substr(2) : s
+}
+
+export interface Signature {
+  v: string
+  r: string
+  s: string
+}
+
+export function signatureToVRS(rawSignature: string): Signature {
+  const signature = strip0x(rawSignature)
+  const v = signature.substr(64 * 2)
+  const r = signature.substr(0, 32 * 2)
+  const s = signature.substr(32 * 2, 32 * 2)
+  return { v, r, s }
+}
+
+export function packSignatures(array: Array<Signature>): string {
+  const length = strip0x(Web3.utils.toHex(array.length))
+  const msgLength = length.length === 1 ? `0${length}` : length
+  const [v, r, s] = array.reduce(([vs, rs, ss], { v, r, s }) => [vs + v, rs + r, ss + s], ['', '', ''])
+  return `0x${msgLength}${v}${r}${s}`
+}
--- a/alm/src/utils/validatorConfirmationHelpers.ts
+++ b/alm/src/utils/validatorConfirmationHelpers.ts
@@ -2,18 +2,9 @@ import Web3 from 'web3'
 import { Contract } from 'web3-eth-contract'
 import { BasicConfirmationParam, ConfirmationParam } from '../hooks/useMessageConfirmations'
 import validatorsCache from '../services/ValidatorsCache'
-import {
-  CACHE_KEY_FAILED,
-  CACHE_KEY_SUCCESS,
-  ONE_DAY_TIMESTAMP,
-  VALIDATOR_CONFIRMATION_STATUS
-} from '../config/constants'
-import {
-  APIPendingTransaction,
-  APITransaction,
-  GetFailedTransactionParams,
-  GetPendingTransactionParams
-} from './explorer'
+import { CACHE_KEY_FAILED, CACHE_KEY_SUCCESS, VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
+import { APIPendingTransaction, APITransaction, GetTransactionParams, GetPendingTransactionParams } from './explorer'
+import { homeBlockNumberProvider } from '../services/BlockNumberProvider'

 export const getValidatorConfirmation = (
  web3: Web3,
@@ -45,11 +36,13 @@ export const getValidatorConfirmation = (
  }
 }

-export const getValidatorSuccessTransaction = (
+export const getSuccessExecutionTransaction = (
+  web3: Web3,
  bridgeContract: Contract,
+  fromHome: boolean,
  messageData: string,
-  timestamp: number,
-  getSuccessTransactions: (args: GetFailedTransactionParams) => Promise<APITransaction[]>
+  startBlock: number,
+  getSuccessTransactions: (args: GetTransactionParams) => Promise<APITransaction[]>
 ) => async (validatorData: BasicConfirmationParam): Promise<ConfirmationParam> => {
  const { validator } = validatorData
  const validatorCacheKey = `${CACHE_KEY_SUCCESS}${validatorData.validator}-${messageData}`
@@ -63,8 +56,8 @@ export const getValidatorSuccessTransaction = (
    account: validatorData.validator,
    to: bridgeContract.options.address,
    messageData,
-    startTimestamp: timestamp,
-    endTimestamp: timestamp + ONE_DAY_TIMESTAMP
+    startBlock,
+    endBlock: homeBlockNumberProvider.get() || 0
  })

  let txHashTimestamp = 0
@@ -96,8 +89,8 @@ export const getValidatorSuccessTransaction = (
 export const getValidatorFailedTransaction = (
  bridgeContract: Contract,
  messageData: string,
-  timestamp: number,
-  getFailedTransactions: (args: GetFailedTransactionParams) => Promise<APITransaction[]>
+  startBlock: number,
+  getFailedTransactions: (args: GetTransactionParams) => Promise<APITransaction[]>
 ) => async (validatorData: BasicConfirmationParam): Promise<ConfirmationParam> => {
  const validatorCacheKey = `${CACHE_KEY_FAILED}${validatorData.validator}-${messageData}`
  const failedFromCache = validatorsCache.getData(validatorCacheKey)
@@ -110,8 +103,8 @@ export const getValidatorFailedTransaction = (
    account: validatorData.validator,
    to: bridgeContract.options.address,
    messageData,
-    startTimestamp: timestamp,
-    endTimestamp: timestamp + ONE_DAY_TIMESTAMP
+    startBlock,
+    endBlock: homeBlockNumberProvider.get() || 0
  })
  const newStatus =
    failedTransactions.length > 0 ? VALIDATOR_CONFIRMATION_STATUS.FAILED : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
--- a/audit/quantstamp/POA-Network-TokenBridge-contracts-5.4.1-security-assessment-report.pdf
+++ b/audit/quantstamp/POA-Network-TokenBridge-contracts-5.4.1-security-assessment-report.pdf
--- a/burner-wallet-plugin/yarn.lock
+++ b/burner-wallet-plugin/yarn.lock
@@ -2600,6 +2600,11 @@
  resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"
  integrity sha512-tHq6qdbT9U1IRSGf14CL0pUlULksvY9OZ+5eEgl1N7t+OA3tGvNpxJCzuKQlsNgCVwbAs670L1vcVQi8j9HjnA==

+"@types/mocha@^7.0.2":
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-7.0.2.tgz#b17f16cf933597e10d6d78eae3251e692ce8b0ce"
+  integrity sha512-ZvO2tAcjmMi8V/5Z3JsyofMe3hasRcaw88cto5etSVMwVQfeivGAlEYmaQgceUSVYFofVjT+ioHsATjdWcFt1w==
+
 "@types/node@*", "@types/node@>= 8":
  version "13.11.0"
  resolved "https://registry.yarnpkg.com/@types/node/-/node-13.11.0.tgz#390ea202539c61c8fa6ba4428b57e05bc36dc47b"
@@ -3215,6 +3220,11 @@ are-we-there-yet@~1.1.2:
    delegates "^1.0.0"
    readable-stream "^2.0.6"

+arg@^4.1.0:
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/arg/-/arg-4.1.3.tgz#269fc7ad5b8e42cb63c896d5666017261c144089"
+  integrity sha512-58S9QDqG0Xx27YwPSt9fJxivjYl432YCwfDMfZ+71RAqUrZef7LrKQZ3LHLOwCS4FLNBplP533Zx895SeOCHvA==
+
 argparse@^1.0.7:
  version "1.0.10"
  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
@@ -3340,6 +3350,11 @@ assert@^1.1.1:
    object-assign "^4.1.1"
    util "0.10.3"

+assertion-error@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/assertion-error/-/assertion-error-1.1.0.tgz#e60b6b0e8f301bd97e5375215bda406c85118c0b"
+  integrity sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==
+
 assign-symbols@^1.0.0:
  version "1.0.0"
  resolved "https://registry.yarnpkg.com/assign-symbols/-/assign-symbols-1.0.0.tgz#59667f41fadd4f20ccbc2bb96b8d4f7f78ec0367"
@@ -3435,6 +3450,13 @@ axios@^0.18.0:
    follow-redirects "1.5.10"
    is-buffer "^2.0.2"

+axios@^0.19.0:
+  version "0.19.2"
+  resolved "https://registry.yarnpkg.com/axios/-/axios-0.19.2.tgz#3ea36c5d8818d0d5f8a8a97a6d36b86cdc00cb27"
+  integrity sha512-fjgm5MvRHLhx+osE2xoekY70AhARk3a6hkN+3Io1jc00jtquGvxYlKlsFUhmUET0V5te6CcZI7lcv2Ym61mjHA==
+  dependencies:
+    follow-redirects "1.5.10"
+
 axobject-query@^2.0.2:
  version "2.1.2"
  resolved "https://registry.yarnpkg.com/axobject-query/-/axobject-query-2.1.2.tgz#2bdffc0371e643e5f03ba99065d5179b9ca79799"
@@ -3799,6 +3821,11 @@ browser-resolve@^1.11.3:
  dependencies:
    resolve "1.1.7"

+browser-stdout@1.3.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/browser-stdout/-/browser-stdout-1.3.1.tgz#baa559ee14ced73452229bad7326467c61fabd60"
+  integrity sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==
+
 browserify-aes@^1.0.0, browserify-aes@^1.0.4, browserify-aes@^1.0.6:
  version "1.2.0"
  resolved "https://registry.yarnpkg.com/browserify-aes/-/browserify-aes-1.2.0.tgz#326734642f403dabc3003209853bb70ad428ef48"
@@ -4188,6 +4215,18 @@ caseless@~0.12.0:
  resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
  integrity sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=

+chai@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/chai/-/chai-4.2.0.tgz#760aa72cf20e3795e84b12877ce0e83737aa29e5"
+  integrity sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==
+  dependencies:
+    assertion-error "^1.1.0"
+    check-error "^1.0.2"
+    deep-eql "^3.0.1"
+    get-func-name "^2.0.0"
+    pathval "^1.1.0"
+    type-detect "^4.0.5"
+
 chalk@2.4.2, chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.0, chalk@^2.3.1, chalk@^2.4.1, chalk@^2.4.2:
  version "2.4.2"
  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
@@ -4213,6 +4252,11 @@ chardet@^0.7.0:
  resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.7.0.tgz#90094849f0937f2eedc2425d0d28a9e5f0cbad9e"
  integrity sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==

+check-error@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/check-error/-/check-error-1.0.2.tgz#574d312edd88bb5dd8912e9286dd6c0aed4aac82"
+  integrity sha1-V00xLt2Iu13YkS6Sht1sCu1KrII=
+
 check-types@^8.0.3:
  version "8.0.3"
  resolved "https://registry.yarnpkg.com/check-types/-/check-types-8.0.3.tgz#3356cca19c889544f2d7a95ed49ce508a0ecf552"
@@ -4446,6 +4490,11 @@ combined-stream@^1.0.6, combined-stream@~1.0.6:
  dependencies:
    delayed-stream "~1.0.0"

+commander@2.15.1:
+  version "2.15.1"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
+  integrity sha512-VlfT9F3V0v+jr4yxPc5gg9s62/fIVWsd2Bk2iD435um1NlGMYdVCq+MjcXnhYq2icNOizHr1kK+5TI6H0Hy0ag==
+
 commander@2.17.x:
  version "2.17.1"
  resolved "https://registry.yarnpkg.com/commander/-/commander-2.17.1.tgz#bd77ab7de6de94205ceacc72f1716d29f20a77bf"
@@ -5241,6 +5290,13 @@ dedent@^0.7.0:
  resolved "https://registry.yarnpkg.com/dedent/-/dedent-0.7.0.tgz#2495ddbaf6eb874abb0e1be9df22d2e5a544326c"
  integrity sha1-JJXduvbrh0q7Dhvp3yLS5aVEMmw=

+deep-eql@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/deep-eql/-/deep-eql-3.0.1.tgz#dfc9404400ad1c8fe023e7da1df1c147c4b444df"
+  integrity sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==
+  dependencies:
+    type-detect "^4.0.0"
+
 deep-equal@^1.0.1:
  version "1.1.1"
  resolved "https://registry.yarnpkg.com/deep-equal/-/deep-equal-1.1.1.tgz#b5c98c942ceffaf7cb051e24e1434a25a2e6076a"
@@ -5413,6 +5469,16 @@ diff-sequences@^24.9.0:
  resolved "https://registry.yarnpkg.com/diff-sequences/-/diff-sequences-24.9.0.tgz#5715d6244e2aa65f48bba0bc972db0b0b11e95b5"
  integrity sha512-Dj6Wk3tWyTE+Fo1rW8v0Xhwk80um6yFYKbuAxc9c3EZxIHFDYwbi34Uk42u1CdnIiVorvt4RmlSDjIPyzGC2ew==

+diff@3.5.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
+  integrity sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==
+
+diff@^4.0.1:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
+  integrity sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==
+
 diffie-hellman@^5.0.0:
  version "5.0.3"
  resolved "https://registry.yarnpkg.com/diffie-hellman/-/diffie-hellman-5.0.3.tgz#40e8ee98f55a2149607146921c63e1ae5f3d2875"
@@ -7093,6 +7159,11 @@ get-caller-file@^2.0.1:
  resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
  integrity sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==

+get-func-name@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/get-func-name/-/get-func-name-2.0.0.tgz#ead774abee72e20409433a066366023dd6887a41"
+  integrity sha1-6td0q+5y4gQJQzoGY2YCPdaIekE=
+
 get-own-enumerable-property-symbols@^3.0.0:
  version "3.0.2"
  resolved "https://registry.yarnpkg.com/get-own-enumerable-property-symbols/-/get-own-enumerable-property-symbols-3.0.2.tgz#b5fde77f22cbe35f390b4e089922c50bce6ef664"
@@ -7227,6 +7298,18 @@ glob-to-regexp@^0.3.0:
  resolved "https://registry.yarnpkg.com/glob-to-regexp/-/glob-to-regexp-0.3.0.tgz#8c5a1494d2066c570cc3bfe4496175acc4d502ab"
  integrity sha1-jFoUlNIGbFcMw7/kSWF1rMTVAqs=

+glob@7.1.2:
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
+  integrity sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
 glob@^7.0.3, glob@^7.1.1, glob@^7.1.2, glob@^7.1.3, glob@^7.1.4:
  version "7.1.6"
  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.6.tgz#141f33b81a7c2492e125594307480c46679278a6"
@@ -7360,6 +7443,11 @@ graceful-fs@^4.1.10, graceful-fs@^4.1.11, graceful-fs@^4.1.15, graceful-fs@^4.1.
  resolved "https://registry.yarnpkg.com/graceful-readlink/-/graceful-readlink-1.0.1.tgz#4cafad76bc62f02fa039b2f94e9a3dd3a391a725"
  integrity sha1-TK+tdrxi8C+gObL5Tpo906ORpyU=

+growl@1.10.5:
+  version "1.10.5"
+  resolved "https://registry.yarnpkg.com/growl/-/growl-1.10.5.tgz#f2735dc2283674fa67478b10181059355c369e5e"
+  integrity sha512-qBr4OuELkhPenW6goKVXiv47US3clb3/IbuWF9KNKEijAy9oeHxU9IgzjvJhHkUzhaj7rOUD7+YGWqUjLp5oSA==
+
 growly@^1.3.0:
  version "1.3.0"
  resolved "https://registry.yarnpkg.com/growly/-/growly-1.3.0.tgz#f10748cbe76af964b7c96c93c6bcc28af120c081"
@@ -7518,6 +7606,11 @@ hdkey@^1.1.1:
    safe-buffer "^5.1.1"
    secp256k1 "^3.0.1"

+he@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
+  integrity sha1-k0EP0hsAlzUVH4howvJx80J+I/0=
+
 he@1.2.x:
  version "1.2.0"
  resolved "https://registry.yarnpkg.com/he/-/he-1.2.0.tgz#84ae65fa7eafb165fddb61566ae14baf05664f0f"
@@ -9592,6 +9685,11 @@ make-dir@^2.0.0, make-dir@^2.1.0:
    pify "^4.0.1"
    semver "^5.6.0"

+make-error@^1.1.1:
+  version "1.3.6"
+  resolved "https://registry.yarnpkg.com/make-error/-/make-error-1.3.6.tgz#2eb2e37ea9b67c4891f684a1394799af484cf7a2"
+  integrity sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw==
+
 make-fetch-happen@^5.0.0:
  version "5.0.2"
  resolved "https://registry.yarnpkg.com/make-fetch-happen/-/make-fetch-happen-5.0.2.tgz#aa8387104f2687edca01c8687ee45013d02d19bd"
@@ -9943,6 +10041,11 @@ minimist-options@^3.0.1:
    arrify "^1.0.1"
    is-plain-obj "^1.1.0"

+minimist@0.0.8:
+  version "0.0.8"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
+  integrity sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=
+
 minimist@^1.1.1, minimist@^1.1.3, minimist@^1.2.0, minimist@^1.2.5:
  version "1.2.5"
  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz#67d66014b66a6a8aaa0c083c5fd58df4e4e97602"
@@ -10007,6 +10110,13 @@ mkdirp@*:
  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
  integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==

+mkdirp@0.5.1:
+  version "0.5.1"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
+  integrity sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=
+  dependencies:
+    minimist "0.0.8"
+
 mkdirp@^0.5.0, mkdirp@^0.5.1:
  version "0.5.5"
  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.5.tgz#d91cefd62d1436ca0f41620e251288d420099def"
@@ -10021,6 +10131,23 @@ mkdirp@~0.5.0, mkdirp@~0.5.1:
  dependencies:
    minimist "^1.2.5"

+mocha@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-5.2.0.tgz#6d8ae508f59167f940f2b5b3c4a612ae50c90ae6"
+  integrity sha512-2IUgKDhc3J7Uug+FxMXuqIyYzH7gJjXECKe/w43IGgQHTSj3InJi+yAA7T24L9bQMRKiUEHxEX37G5JpVUGLcQ==
+  dependencies:
+    browser-stdout "1.3.1"
+    commander "2.15.1"
+    debug "3.1.0"
+    diff "3.5.0"
+    escape-string-regexp "1.0.5"
+    glob "7.1.2"
+    growl "1.10.5"
+    he "1.1.1"
+    minimatch "3.0.4"
+    mkdirp "0.5.1"
+    supports-color "5.4.0"
+
 mock-fs@^4.1.0:
  version "4.11.0"
  resolved "https://registry.yarnpkg.com/mock-fs/-/mock-fs-4.11.0.tgz#0828107e4b843a6ba855ecebfe3c6e073b69db92"
@@ -10967,6 +11094,11 @@ path-type@^4.0.0:
  resolved "https://registry.yarnpkg.com/path-type/-/path-type-4.0.0.tgz#84ed01c0a7ba380afe09d90a8c180dcd9d03043b"
  integrity sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==

+pathval@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.0.tgz#b942e6d4bde653005ef6b71361def8727d0645e0"
+  integrity sha1-uULm1L3mUwBe9rcTYd74cn0GReA=
+
 pbkdf2@^3.0.3:
  version "3.0.17"
  resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.0.17.tgz#976c206530617b14ebb32114239f7b09336e93a6"
@@ -13271,6 +13403,14 @@ source-map-support@0.5.6:
    buffer-from "^1.0.0"
    source-map "^0.6.0"

+source-map-support@^0.5.17:
+  version "0.5.19"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"
+  integrity sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
 source-map-support@^0.5.6, source-map-support@~0.5.10, source-map-support@~0.5.12:
  version "0.5.16"
  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.16.tgz#0ae069e7fe3ba7538c64c98515e35339eac5a042"
@@ -13712,6 +13852,13 @@ stylis@^3.5.0:
  resolved "https://registry.yarnpkg.com/stylis/-/stylis-3.5.4.tgz#f665f25f5e299cf3d64654ab949a57c768b73fbe"
  integrity sha512-8/3pSmthWM7lsPBKv7NXkzn2Uc9W7NotcwGNpJaa3k7WMM1XDCA4MgT5k/8BIexd5ydZdboXtU90XH9Ec4Bv/Q==

+supports-color@5.4.0:
+  version "5.4.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.4.0.tgz#1c6b337402c2137605efe19f10fec390f6faab54"
+  integrity sha512-zjaXglF5nnWpsq470jSv6P9DwPvgLkuapYmfDm3JWOm0vkNTVF2tI4UrN2r6jH1qM/uc/WtxYY1hYoA2dOKj5w==
+  dependencies:
+    has-flag "^3.0.0"
+
 supports-color@^2.0.0:
  version "2.0.0"
  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
@@ -14076,6 +14223,17 @@ tryer@^1.0.1:
  resolved "https://registry.yarnpkg.com/tryer/-/tryer-1.0.1.tgz#f2c85406800b9b0f74c9f7465b81eaad241252f8"
  integrity sha512-c3zayb8/kWWpycWYg87P71E1S1ZL6b6IJxfb5fvsUgsf0S2MVGaDhDXXjDMpdCpfWXqptc+4mXwmiy1ypXqRAA==

+ts-node@^8.8.2:
+  version "8.10.2"
+  resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-8.10.2.tgz#eee03764633b1234ddd37f8db9ec10b75ec7fb8d"
+  integrity sha512-ISJJGgkIpDdBhWVu3jufsWpK3Rzo7bdiIXJjQc0ynKxVOVcg2oIrf2H2cejminGrptVc6q6/uynAHNCuWGbpVA==
+  dependencies:
+    arg "^4.1.0"
+    diff "^4.0.1"
+    make-error "^1.1.1"
+    source-map-support "^0.5.17"
+    yn "3.1.1"
+
 ts-pnp@1.1.2:
  version "1.1.2"
  resolved "https://registry.yarnpkg.com/ts-pnp/-/ts-pnp-1.1.2.tgz#be8e4bfce5d00f0f58e0666a82260c34a57af552"
@@ -14122,6 +14280,11 @@ type-check@~0.3.2:
  dependencies:
    prelude-ls "~1.1.2"

+type-detect@^4.0.0, type-detect@^4.0.5:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
+  integrity sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==
+
 type-fest@^0.3.0:
  version "0.3.1"
  resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.3.1.tgz#63d00d204e059474fe5e1b7c011112bbd1dc29e1"
@@ -14167,6 +14330,11 @@ typescript@3.5.3:
  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.5.3.tgz#c830f657f93f1ea846819e929092f5fe5983e977"
  integrity sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==

+typescript@^3.5.2:
+  version "3.9.7"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
+  integrity sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==
+
 uglify-js@3.4.x:
  version "3.4.10"
  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.4.10.tgz#9ad9563d8eb3acdfb8d38597d2af1d815f6a755f"
@@ -15481,3 +15649,8 @@ yauzl@^2.4.2:
  dependencies:
    buffer-crc32 "~0.2.3"
    fd-slicer "~1.1.0"
+
+yn@3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/yn/-/yn-3.1.1.tgz#1e87401a09d767c1d5eab26a6e4c185182d2eb50"
+  integrity sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==
--- a/commons/.eslintrc
+++ b/commons/.eslintrc
@@ -5,7 +5,8 @@
  ],
  "rules": {
    "no-unused-expressions": "off",
-    "import/no-extraneous-dependencies": "off"
+    "import/no-extraneous-dependencies": "off",
+    "no-bitwise": "off"
  },
  "env": {
    "mocha": true
--- a/commons/message.js
+++ b/commons/message.js
@@ -2,9 +2,15 @@ function strip0x(input) {
  return input.replace(/^0x/, '')
 }

-function addTxHashToData({ encodedData, transactionHash }) {
-  return encodedData.slice(0, 2) + strip0x(transactionHash) + encodedData.slice(2)
-}
+/**
+ * Decodes the datatype byte from the AMB message.
+ * First (the most significant bit) denotes if the message should be forwarded to the manual lane.
+ * @param dataType: number datatype of the received AMB message.
+ * @return {{manualLane: boolean}}
+ */
+const decodeAMBDataType = dataType => ({
+  manualLane: (dataType & 128) === 128
+})

 function parseAMBMessage(message) {
  message = strip0x(message)
@@ -12,16 +18,29 @@ function parseAMBMessage(message) {
  const messageId = `0x${message.slice(0, 64)}`
  const sender = `0x${message.slice(64, 104)}`
  const executor = `0x${message.slice(104, 144)}`
+  const dataType = parseInt(message.slice(156, 158), 16)

  return {
    sender,
    executor,
-    messageId
+    messageId,
+    dataType,
+    decodedDataType: decodeAMBDataType(dataType)
  }
 }

-module.exports = {
-  addTxHashToData,
-  parseAMBMessage,
-  strip0x
+const normalizeAMBMessageEvent = e => {
+  let msgData = e.returnValues.encodedData
+  if (!e.returnValues.messageId) {
+    // append tx hash to an old message, where message id was not used
+    // for old messages, e.messageId is a corresponding transactionHash
+    msgData = e.transactionHash + msgData.slice(2)
+  }
+  return parseAMBMessage(msgData)
+}
+
+module.exports = {
+  strip0x,
+  parseAMBMessage,
+  normalizeAMBMessageEvent
 }
--- a/commons/test/message.test.js
+++ b/commons/test/message.test.js
@@ -1,6 +1,6 @@
 const { BN } = require('web3-utils')
 const { expect } = require('chai').use(require('bn-chai')(BN))
-const { parseAMBMessage, strip0x, addTxHashToData } = require('../message')
+const { parseAMBMessage, strip0x } = require('../message')

 describe('strip0x', () => {
  it('should remove 0x from input', () => {
@@ -24,28 +24,6 @@ describe('strip0x', () => {
    expect(result).to.be.equal(input)
  })
 })
-describe('addTxHashToData', () => {
-  it('should add txHash to encoded data at position 2', () => {
-    // Given
-    const msgSender = '0x003667154bb32e42bb9e1e6532f19d187fa0082e'
-    const msgExecutor = '0xf4bef13f9f4f2b203faf0c3cbbaabe1afe056955'
-    const msgGasLimit = '000000000000000000000000000000000000000000000000000000005b877705'
-    const msgDataType = '00'
-    const msgData = '0xb1591967aed668a4b27645ff40c444892d91bf5951b382995d4d4f6ee3a2ce03'
-    const encodedData = `0x${strip0x(msgSender)}${strip0x(msgExecutor)}${msgGasLimit}${msgDataType}${strip0x(msgData)}`
-
-    const transactionHash = '0xbdceda9d8c94838aca10c687da1411a07b1390e88239c0638cb9cc264219cc10'
-    const message = `0x${strip0x(transactionHash)}${strip0x(msgSender)}${strip0x(
-      msgExecutor
-    )}${msgGasLimit}${msgDataType}${strip0x(msgData)}`
-
-    // When
-    const result = addTxHashToData({ encodedData, transactionHash })
-
-    // Then
-    expect(result).to.be.equal(message)
-  })
-})
 describe('parseAMBMessage', () => {
  it('should parse data type 00', () => {
    const msgSender = '0x003667154bb32e42bb9e1e6532f19d187fa0082e'
--- a/commons/utils.js
+++ b/commons/utils.js
@@ -164,18 +164,18 @@ const getPastEvents = async (
  } catch (e) {
    if (e.message.includes('query returned more than') && toBlock !== 'latest') {
      const middle = toBN(fromBlock)
-        .add(toBlock)
+        .add(toBN(toBlock))
        .divRound(toBN(2))
      const middlePlusOne = middle.add(toBN(1))

      const firstHalfEvents = await getPastEvents(contract, {
-        ...options,
+        options,
        event,
        fromBlock,
        toBlock: middle
      })
      const secondHalfEvents = await getPastEvents(contract, {
-        ...options,
+        options,
        event,
        fromBlock: middlePlusOne,
        toBlock
--- a/commons/v1Abis.js
+++ b/commons/v1Abis.js
@@ -65,6 +65,20 @@ const homeV1Abi = [
    payable: false,
    stateMutability: 'view',
    type: 'function'
+  },
+  {
+    constant: true,
+    inputs: [],
+    name: 'requiredBlockConfirmations',
+    outputs: [
+      {
+        name: '',
+        type: 'uint256'
+      }
+    ],
+    payable: false,
+    stateMutability: 'view',
+    type: 'function'
  }
 ]

@@ -154,6 +168,20 @@ const foreignViAbi = [
    payable: false,
    stateMutability: 'view',
    type: 'function'
+  },
+  {
+    constant: true,
+    inputs: [],
+    name: 'requiredBlockConfirmations',
+    outputs: [
+      {
+        name: '',
+        type: 'uint256'
+      }
+    ],
+    payable: false,
+    stateMutability: 'view',
+    type: 'function'
  }
 ]

--- a/2
+++ b/2
--- a/deployment-e2e/molecule/multiple/tests/test_multiple.py
+++ b/deployment-e2e/molecule/multiple/tests/test_multiple.py
@@ -24,6 +24,7 @@ def test_services(host, service):
    ("oracle_bridge_affirmation_1"),
    ("oracle_bridge_senderhome_1"),
    ("oracle_bridge_senderforeign_1"),
+    ("oracle_bridge_shutdown_1"),
    ("ui_ui_1"),
    ("monitor_monitor_1")
 ])
--- a/deployment-e2e/molecule/oracle/tests/test_oracle.py
+++ b/deployment-e2e/molecule/oracle/tests/test_oracle.py
@@ -14,6 +14,7 @@ testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
    ("oracle_bridge_affirmation_1"),
    ("oracle_bridge_senderhome_1"),
    ("oracle_bridge_senderforeign_1"),
+    ("oracle_bridge_shutdown_1"),
 ])
 def test_docker_containers(host, name):
    container = host.docker(name)
--- a/deployment-e2e/molecule/ultimate-amb-stake-erc-to-erc/molecule.yml
+++ b/deployment-e2e/molecule/ultimate-amb-stake-erc-to-erc/molecule.yml
@@ -32,8 +32,6 @@ provisioner:
  inventory:
    host_vars:
      oracle-amb-host:
-        COMMON_HOME_RPC_URL: "http://parity1:8545"
-        COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
        ORACLE_VALIDATOR_ADDRESS: "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
        ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
      ui-amb-stake-erc-to-erc-host:
--- a/deployment-e2e/molecule/ultimate-amb/molecule.yml
+++ b/deployment-e2e/molecule/ultimate-amb/molecule.yml
@@ -21,8 +21,6 @@ provisioner:
  inventory:
    host_vars:
      oracle-amb-host:
-        COMMON_HOME_RPC_URL: "http://parity1:8545"
-        COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
        ORACLE_VALIDATOR_ADDRESS: "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
        ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
 verifier:
--- a/deployment-e2e/molecule/ultimate-commons/converge.yml
+++ b/deployment-e2e/molecule/ultimate-commons/converge.yml
@@ -1,5 +1,3 @@
 ---
- import_playbook: ../../../deployment/site.yml
-# The docker-compose files have to be modified, in order to join the docker containers over network with the parity containers
 - import_playbook: ./oracle-docker-compose.yml
- import_playbook: ./ui-docker-compose.yml
+- import_playbook: ../../../deployment/site.yml
--- a/deployment-e2e/molecule/ultimate-commons/oracle-add-docker-external-network.yml
+++ b/deployment-e2e/molecule/ultimate-commons/oracle-add-docker-external-network.yml
@@ -1,26 +0,0 @@
---
- name: Slurp docker compose file
-  slurp:
-    src: "/home/poadocker/bridge/oracle/{{ file }}.yml"
-  register: docker_compose_slurp
- name: Parse docker compose file
-  set_fact:
-    docker_compose_parsed: "{{ docker_compose_slurp['content'] | b64decode | from_yaml }}"
-
- name: Add the external network used to connect to Parity nodes
-  set_fact:
-    docker_compose_parsed: "{{ docker_compose_parsed |combine({'networks': {'ultimate': {'external': 'true'}}}, recursive=True) }}"
-
- name: Add all Oracle containers to the network
-  set_fact:
-    docker_compose_parsed: "{{ docker_compose_parsed | combine({'services': {item: {'networks': docker_compose_parsed.services[item].networks | union(['ultimate'])}}}, recursive=True) }}"
-  with_items: "{{ docker_compose_parsed.services }}"
-
- name: Expose Redis port to allow connecting from redis-cli
-  set_fact:
-    docker_compose_parsed: "{{ docker_compose_parsed | combine({'services': {'redis': {'ports': ['6379:6379']}}}, recursive=True) }}"
-
- name: Write updated docker file
-  copy:
-    content: "{{ docker_compose_parsed | to_yaml }}"
-    dest: "/home/poadocker/bridge/oracle/{{ file }}.yml"
--- a/deployment-e2e/molecule/ultimate-commons/oracle-docker-compose.yml
+++ b/deployment-e2e/molecule/ultimate-commons/oracle-docker-compose.yml
@@ -1,33 +1,22 @@
 ---
- name: Overwrite Oracle the docker-compose
+- name: Prepare Oracle for ultimate tests
  hosts: oracle
  become: true
  tasks:
-  - name: stop the service
-    shell: service poabridge stop
-
-  - name: ReTag current oracle image
-    shell: docker tag $(docker images --format '{{ '{{' }}.Repository{{ '}}' }}:{{ '{{' }}.Tag{{ '}}' }}' | grep -m 1 tokenbridge-e2e-oracle) oracle:ultimate-testing
+  - name: Connect parity to oracle networks
+    shell: "docker network create {{ item }} && docker network connect {{ item }} parity1 && docker network connect {{ item }} parity2"
+    with_items:
+      - oracle_net_db_bridge_request
+      - oracle_net_db_bridge_collected
+      - oracle_net_db_bridge_affirmation
+      - oracle_net_db_bridge_transfer
+      - oracle_net_db_bridge_senderhome
+      - oracle_net_db_bridge_senderforeign
+      - oracle_net_rabbit_bridge_request
+      - oracle_net_rabbit_bridge_collected
+      - oracle_net_rabbit_bridge_affirmation
+      - oracle_net_rabbit_bridge_transfer
+      - oracle_net_rabbit_bridge_senderhome
+      - oracle_net_rabbit_bridge_senderforeign
    delegate_to: 127.0.0.1
    become: false
-
-  - name: Replace oracle image
-    replace:
-      path: "/home/poadocker/bridge/oracle/{{ item }}.yml"
-      regexp: 'poanetwork/tokenbridge-oracle:latest'
-      replace: "oracle:ultimate-testing"
-    with_items:
-      - docker-compose
-      - docker-compose-transfer
-      - docker-compose-erc-native
-
-  - include_tasks: oracle-add-docker-external-network.yml
-    with_items:
-      - docker-compose
-      - docker-compose-transfer
-      - docker-compose-erc-native
-    loop_control:
-      loop_var: file
-
-  - name: start the service
-    shell: service poabridge start
--- a/deployment-e2e/molecule/ultimate-commons/ui-docker-compose.yml
+++ b/deployment-e2e/molecule/ultimate-commons/ui-docker-compose.yml
@@ -1,32 +0,0 @@
---
- name: Overwrite UI the docker-compose
-  hosts: ui
-  become: true
-  tasks:
-  - name: stop the service
-    shell: service tokenbridge-ui stop
-  
-  - name: Slurp docker compose file
-    slurp:
-      src: "/home/poadocker/bridge/ui/docker-compose.yml"
-    register: docker_compose_slurp
-  - name: Parse docker compose file
-    set_fact:
-      docker_compose_parsed: "{{ docker_compose_slurp['content'] | b64decode | from_yaml }}"
-
-  - name: Add the external network used to connect to Parity nodes
-    set_fact:
-      docker_compose_parsed: "{{ docker_compose_parsed |combine({'networks': {'ultimate': {'external': 'true'}}}, recursive=True) }}"
-
-  - name: Add all UI containers to the network
-    set_fact:
-      docker_compose_parsed: "{{ docker_compose_parsed | combine({'services': {item: {'networks': ['ultimate']}}}, recursive=True) }}"
-    with_items: "{{ docker_compose_parsed.services }}"
-  
-  - name: Write new docker-compose file
-    copy:
-      content: "{{ docker_compose_parsed | to_yaml }}"
-      dest: "/home/poadocker/bridge/ui/docker-compose.yml"
-
-  - name: start the service
-    shell: service tokenbridge-ui start
--- a/deployment-e2e/molecule/ultimate-erc-to-erc/molecule.yml
+++ b/deployment-e2e/molecule/ultimate-erc-to-erc/molecule.yml
@@ -32,8 +32,6 @@ provisioner:
  inventory:
    host_vars:
      oracle-erc-to-erc-host:
-        COMMON_HOME_RPC_URL: "http://parity1:8545"
-        COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
        ORACLE_VALIDATOR_ADDRESS: "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
        ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
      ui-erc-to-erc-host:
--- a/deployment-e2e/molecule/ultimate-erc-to-native/molecule.yml
+++ b/deployment-e2e/molecule/ultimate-erc-to-native/molecule.yml
@@ -32,8 +32,6 @@ provisioner:
  inventory:
    host_vars:
      oracle-erc-to-native-host:
-        COMMON_HOME_RPC_URL: "http://parity1:8545"
-        COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
        ORACLE_VALIDATOR_ADDRESS: "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
        ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
        ORACLE_HOME_START_BLOCK: 1
--- a/deployment-e2e/molecule/ultimate-native-to-erc/molecule.yml
+++ b/deployment-e2e/molecule/ultimate-native-to-erc/molecule.yml
@@ -32,8 +32,6 @@ provisioner:
  inventory:
    host_vars:
      oracle-native-to-erc-host:
-        COMMON_HOME_RPC_URL: "http://parity1:8545"
-        COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
        ORACLE_VALIDATOR_ADDRESS: "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
        ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
      ui-native-to-erc-host:
--- a/deployment/group_vars/ultimate.yml
+++ b/deployment/group_vars/ultimate.yml
@@ -5,13 +5,13 @@ ORACLE_ALLOW_HTTP_FOR_RPC: yes
 ORACLE_LOG_LEVEL: debug

 ## Home contract
-COMMON_HOME_RPC_URL: "https://sokol.poa.network"
+COMMON_HOME_RPC_URL: "http://parity1:8545"
 UI_HOME_NETWORK_DISPLAY_NAME: "POA Sokol"
 UI_HOME_WITHOUT_EVENTS: false
 ORACLE_HOME_RPC_POLLING_INTERVAL: 5000

 ## Foreign contract
-COMMON_FOREIGN_RPC_URL: "https://sokol.poa.network"
+COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
 UI_FOREIGN_NETWORK_DISPLAY_NAME: "Kovan"
 UI_FOREIGN_WITHOUT_EVENTS: false
 ORACLE_FOREIGN_RPC_POLLING_INTERVAL: 1000
@@ -52,3 +52,7 @@ MONITOR_FOREIGN_START_BLOCK: 0
 MONITOR_VALIDATOR_HOME_TX_LIMIT: 300000
 MONITOR_VALIDATOR_FOREIGN_TX_LIMIT: 300000
 MONITOR_TX_NUMBER_THRESHOLD: 100
+
+# disable building and pulling of docker images from the Docker Hub
+skip_pull: true
+skip_build: true
--- a/deployment/roles/common/tasks/dependencies.yml
+++ b/deployment/roles/common/tasks/dependencies.yml
@@ -33,7 +33,7 @@
    mode: "0755"

 - name: Upgrade pip version
-  shell: pip3 install --upgrade pip
+  shell: pip3 install --upgrade pip==19.3.1

 - name: Install python docker library
  shell: pip3 install docker docker-compose setuptools
--- a/deployment/roles/monitor/tasks/jumpbox.yml
+++ b/deployment/roles/monitor/tasks/jumpbox.yml
@@ -3,3 +3,4 @@
  shell: docker-compose pull
  args:
    chdir: "{{ bridge_path }}/monitor"
+  when: skip_pull is undefined
--- a/deployment/roles/oracle/tasks/jumpbox.yml
+++ b/deployment/roles/oracle/tasks/jumpbox.yml
@@ -3,3 +3,4 @@
  shell: docker-compose pull
  args:
    chdir: "{{ bridge_path }}/oracle"
+  when: skip_pull is undefined
--- a/deployment/roles/ui/tasks/jumpbox.yml
+++ b/deployment/roles/ui/tasks/jumpbox.yml
@@ -3,3 +3,4 @@
  shell: docker-compose build
  args:
    chdir: "{{ bridge_path }}/ui"
+  when: skip_build is undefined
--- a/e2e-commons/access-lists/allowance_list.txt
+++ b/e2e-commons/access-lists/allowance_list.txt
--- a/e2e-commons/access-lists/block_list.txt
+++ b/e2e-commons/access-lists/block_list.txt
@@ -0,0 +1,2 @@
+0xc9e38bfdB9c635F0796ad83CC8705dc379F41c04
+0x612E8bd50A7b1F009F43f2b8679E9B8eD91eb5CE
--- a/e2e-commons/components-envs/oracle-amb.env
+++ b/e2e-commons/components-envs/oracle-amb.env
@@ -23,3 +23,4 @@ ORACLE_FOREIGN_RPC_POLLING_INTERVAL=500
 ORACLE_ALLOW_HTTP_FOR_RPC=yes
 ORACLE_HOME_START_BLOCK=1
 ORACLE_FOREIGN_START_BLOCK=1
+ORACLE_HOME_TO_FOREIGN_BLOCK_LIST=/mono/oracle/access-lists/block_list.txt
--- a/e2e-commons/components-envs/oracle-erc20-native.env
+++ b/e2e-commons/components-envs/oracle-erc20-native.env
@@ -23,3 +23,4 @@ ORACLE_FOREIGN_RPC_POLLING_INTERVAL=500
 ORACLE_ALLOW_HTTP_FOR_RPC=yes
 ORACLE_HOME_START_BLOCK=1
 ORACLE_FOREIGN_START_BLOCK=1
+ORACLE_HOME_TO_FOREIGN_BLOCK_LIST=/mono/oracle/access-lists/block_list.txt
--- a/e2e-commons/components-envs/ui-amb-stake-erc20-erc20.env
+++ b/e2e-commons/components-envs/ui-amb-stake-erc20-erc20.env
@@ -19,5 +19,5 @@ COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE=standard
 COMMON_FOREIGN_GAS_PRICE_FALLBACK=5000000000
 UI_FOREIGN_GAS_PRICE_UPDATE_INTERVAL=15000
 COMMON_FOREIGN_GAS_PRICE_FACTOR=1
-UI_PORT=3000
+UI_PORT=3003
 UI_STYLES=stake
--- a/e2e-commons/components-envs/ui-erc20-native.env
+++ b/e2e-commons/components-envs/ui-erc20-native.env
@@ -19,5 +19,5 @@ COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE=standard
 COMMON_FOREIGN_GAS_PRICE_FALLBACK=5000000000
 UI_FOREIGN_GAS_PRICE_UPDATE_INTERVAL=15000
 COMMON_FOREIGN_GAS_PRICE_FACTOR=1
-UI_PORT=3000
+UI_PORT=3002
 UI_STYLES=core
--- a/e2e-commons/components-envs/ui-erc20.env
+++ b/e2e-commons/components-envs/ui-erc20.env
@@ -19,5 +19,5 @@ COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE=standard
 COMMON_FOREIGN_GAS_PRICE_FALLBACK=5000000000
 UI_FOREIGN_GAS_PRICE_UPDATE_INTERVAL=15000
 COMMON_FOREIGN_GAS_PRICE_FACTOR=1
-UI_PORT=3000
+UI_PORT=3001
 UI_STYLES=core
--- a/e2e-commons/constants.json
+++ b/e2e-commons/constants.json
@@ -15,6 +15,10 @@
    "address": "0x3CC5baAB679eC0732C175760079Bf48F564ad26B",
    "privateKey": "0xedb53ee050631b7914d5f1a66c2f0d2df3ec85a9ed2a9616b16a7b1b7a10b8d1"
  },
+  "blockedUser": {
+    "address": "0xc9e38bfdB9c635F0796ad83CC8705dc379F41c04",
+    "privateKey": "0x65df4ea787916f6ed9660f0b0fe36858a65735ad0dcd34527497f4ce32e53883"
+  },
  "validator": {
    "address": "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b",
    "privateKey": "0x8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
@@ -59,6 +63,7 @@
    "foreign": "0x0AEe1FCD12dDFab6265F7f8956e6E012A9Fe4Aa0",
    "homeBox": "0x6C4EaAb8756d53Bf599FFe2347FAFF1123D6C8A1",
    "foreignBox": "0x6C4EaAb8756d53Bf599FFe2347FAFF1123D6C8A1",
+    "blockedHomeBox": "0x612E8bd50A7b1F009F43f2b8679E9B8eD91eb5CE",
    "monitor": "http://monitor-amb:3013/bridge"
  },
  "ambStakeErcToErc": {
--- a/e2e-commons/docker-compose.yml
+++ b/e2e-commons/docker-compose.yml
@@ -4,12 +4,14 @@ networks:
    external: true
 services:
  parity1:
+    container_name: parity1
    build: ../parity
    ports:
    - "8541:8545"
    networks:
      - ultimate
  parity2:
+    container_name: parity2
    build:
      context: ../parity
      dockerfile: Dockerfile-foreign
@@ -50,6 +52,9 @@ services:
    environment:
    - NODE_ENV=production
    command: "true"
+    volumes:
+      - '../e2e-commons/access-lists/block_list.txt:/mono/oracle/access-lists/block_list.txt'
+      - '../e2e-commons/access-lists/allowance_list.txt:/mono/oracle/access-lists/allowance_list.txt'
    networks:
      - ultimate
  oracle-amb:
@@ -58,6 +63,9 @@ services:
    environment:
    - NODE_ENV=production
    command: "true"
+    volumes:
+      - '../e2e-commons/access-lists/block_list.txt:/mono/oracle/access-lists/block_list.txt'
+      - '../e2e-commons/access-lists/allowance_list.txt:/mono/oracle/access-lists/allowance_list.txt'
    networks:
      - ultimate
  ui:
--- a/e2e-commons/scripts/deploy.sh
+++ b/e2e-commons/scripts/deploy.sh
@@ -53,3 +53,8 @@ node deploy.js
 cd - > /dev/null
 node setupStakeTokens.js
 cd - > /dev/null
+
+echo -e "\n\n############ Deploying one more test contract for amb ############\n"
+cd "$DEPLOY_PATH"
+node src/utils/deployTestBox.js
+cd - > /dev/null
--- a/e2e-commons/up.sh
+++ b/e2e-commons/up.sh
@@ -17,23 +17,32 @@ docker-compose up -d parity1 parity2 e2e
 startValidator () {
    docker-compose $1 run -d --name $4 redis
    docker-compose $1 run -d --name $5 rabbit
-    docker-compose $1 run $2 $3 -d oracle yarn watcher:signature-request
-    docker-compose $1 run $2 $3 -d oracle yarn watcher:collected-signatures
-    docker-compose $1 run $2 $3 -d oracle yarn watcher:affirmation-request
-    docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:signature-request
-    docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:collected-signatures
-    docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:affirmation-request
-    docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:transfer
-    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:signature-request
-    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:collected-signatures
-    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:affirmation-request
-    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:transfer
-    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn worker:convert-to-chai
-    docker-compose $1 run $2 $3 -d oracle-amb yarn watcher:signature-request
-    docker-compose $1 run $2 $3 -d oracle-amb yarn watcher:collected-signatures
-    docker-compose $1 run $2 $3 -d oracle-amb yarn watcher:affirmation-request
+    if [[ -z "$MODE" || "$MODE" == native-to-erc ]]; then
+      docker-compose $1 run $2 $3 -d oracle yarn watcher:signature-request
+      docker-compose $1 run $2 $3 -d oracle yarn watcher:collected-signatures
+      docker-compose $1 run $2 $3 -d oracle yarn watcher:affirmation-request
+    fi
+    if [[ -z "$MODE" || "$MODE" == erc-to-erc ]]; then
+      docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:signature-request
+      docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:collected-signatures
+      docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:affirmation-request
+      docker-compose $1 run $2 $3 -d oracle-erc20 yarn watcher:transfer
+    fi
+    if [[ -z "$MODE" || "$MODE" == erc-to-native ]]; then
+      docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:signature-request
+      docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:collected-signatures
+      docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:affirmation-request
+      docker-compose $1 run $2 $3 -d oracle-erc20-native yarn watcher:transfer
+      docker-compose $1 run $2 $3 -d oracle-erc20-native yarn worker:convert-to-chai
+    fi
+    if [[ -z "$MODE" || "$MODE" == amb ]]; then
+      docker-compose $1 run $2 $3 -d oracle-amb yarn watcher:signature-request
+      docker-compose $1 run $2 $3 -d oracle-amb yarn watcher:collected-signatures
+      docker-compose $1 run $2 $3 -d oracle-amb yarn watcher:affirmation-request
+    fi
    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn sender:home
    docker-compose $1 run $2 $3 -d oracle-erc20-native yarn sender:foreign
+    docker-compose $1 run $2 $3 -d oracle yarn manager:shutdown
 }

 startAMBValidator () {
@@ -44,29 +53,12 @@ startAMBValidator () {
    docker-compose $1 run $2 $3 -d oracle-amb yarn watcher:affirmation-request
    docker-compose $1 run $2 $3 -d oracle-amb yarn sender:home
    docker-compose $1 run $2 $3 -d oracle-amb yarn sender:foreign
+    docker-compose $1 run $2 $3 -d oracle-amb yarn manager:shutdown
 }

 while [ "$1" != "" ]; do
  if [ "$1" == "oracle" ]; then
-    docker-compose up -d redis rabbit
-
-    docker-compose run -d oracle yarn watcher:signature-request
-    docker-compose run -d oracle yarn watcher:collected-signatures
-    docker-compose run -d oracle yarn watcher:affirmation-request
-    docker-compose run -d oracle-erc20 yarn watcher:signature-request
-    docker-compose run -d oracle-erc20 yarn watcher:collected-signatures
-    docker-compose run -d oracle-erc20 yarn watcher:affirmation-request
-    docker-compose run -d oracle-erc20 yarn watcher:transfer
-    docker-compose run -d oracle-erc20-native yarn watcher:signature-request
-    docker-compose run -d oracle-erc20-native yarn watcher:collected-signatures
-    docker-compose run -d oracle-erc20-native yarn watcher:affirmation-request
-    docker-compose run -d oracle-erc20-native yarn watcher:transfer
-    docker-compose run -d oracle-erc20-native yarn worker:convert-to-chai
-    docker-compose run -d oracle-amb yarn watcher:signature-request
-    docker-compose run -d oracle-amb yarn watcher:collected-signatures
-    docker-compose run -d oracle-amb yarn watcher:affirmation-request
-    docker-compose run -d oracle yarn sender:home
-    docker-compose run -d oracle yarn sender:foreign
+    startValidator "" "" "" "redis" "rabbit"
  fi

  if [ "$1" == "oracle-validator-2" ]; then
@@ -90,9 +82,9 @@ while [ "$1" != "" ]; do
    docker-compose up -d ui ui-erc20 ui-erc20-native ui-amb-stake-erc20-erc20

    docker-compose run -d -p 3000:3000 ui yarn start
-    docker-compose run -d -p 3001:3000 ui-erc20 yarn start
-    docker-compose run -d -p 3002:3000 ui-erc20-native yarn start
-    docker-compose run -d -p 3003:3000 ui-amb-stake-erc20-erc20 yarn start
+    docker-compose run -d -p 3001:3001 ui-erc20 yarn start
+    docker-compose run -d -p 3002:3002 ui-erc20-native yarn start
+    docker-compose run -d -p 3003:3003 ui-amb-stake-erc20-erc20 yarn start
  fi

  if [ "$1" == "alm" ]; then
@@ -110,17 +102,27 @@ while [ "$1" != "" ]; do
  fi

  if [ "$1" == "monitor" ]; then
-    docker-compose up -d monitor monitor-erc20 monitor-erc20-native monitor-amb
+    case "$MODE" in
+      amb)
+        docker-compose up -d monitor-amb
+        ;;
+      native-to-erc)
+        docker-compose up -d monitor
+        ;;
+      erc-to-erc)
+        docker-compose up -d monitor-erc20
+        ;;
+      erc-to-native)
+        docker-compose up -d monitor-erc20-native
+        ;;
+      *)
+        docker-compose up -d monitor monitor-erc20 monitor-erc20-native monitor-amb
+        ;;
+    esac
  fi

  if [ "$1" == "alm-e2e" ]; then
-    docker-compose up -d redis rabbit
-
-    docker-compose run -d oracle-amb yarn watcher:signature-request
-    docker-compose run -d oracle-amb yarn watcher:collected-signatures
-    docker-compose run -d oracle-amb yarn watcher:affirmation-request
-    docker-compose run -d oracle-amb yarn sender:home
-    docker-compose run -d oracle-amb yarn sender:foreign
+    startAMBValidator "" "" "" "redis" "rabbit"

    oracle2name="-p validator2"
    oracle2Values="-e ORACLE_VALIDATOR_ADDRESS=0xdCC784657C78054aa61FbcFFd2605F32374816A4 -e ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY=5a5c3645d0f04e9eb4f27f94ed4c244a225587405b8838e7456f7781ce3a9513"
--- a/monitor-e2e/package.json
+++ b/monitor-e2e/package.json
@@ -14,7 +14,7 @@
    "axios": "0.19.0"
  },
  "engines": {
-    "node": ">= 8.9"
+    "node": ">= 10.18"
  },
  "devDependencies": {}
 }
--- a/monitor-e2e/periodically-check-all.sh
+++ b/monitor-e2e/periodically-check-all.sh
@@ -1,7 +1,15 @@
 while true; do
-  sleep 5
-  docker-compose -f ../e2e-commons/docker-compose.yml exec -d monitor yarn check-all
-  docker-compose -f ../e2e-commons/docker-compose.yml exec -d monitor-erc20 yarn check-all
-  docker-compose -f ../e2e-commons/docker-compose.yml exec -d monitor-erc20-native yarn check-all
-  docker-compose -f ../e2e-commons/docker-compose.yml exec -d monitor-amb yarn check-all
+  docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor yarn check-all
+  pid1=$!
+  docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor-erc20 yarn check-all
+  pid2=$!
+  docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor-erc20-native yarn check-all
+  pid3=$!
+  docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor-amb yarn check-all
+  pid4=$!
+
+  wait $pid1
+  wait $pid2
+  wait $pid3
+  wait $pid4
 done
--- a/monitor-e2e/run-tests.sh
+++ b/monitor-e2e/run-tests.sh
@@ -1,12 +1,28 @@
 cd $(dirname $0)

-../e2e-commons/up.sh deploy blocks monitor
+mode="$1"
+case "$mode" in
+  amb)
+    script=./test/amb.js
+    ;;
+  native-to-erc)
+    script=./test/nativeToErc.js
+    ;;
+  erc-to-erc)
+    script=./test/ercToErc.js
+    ;;
+  erc-to-native)
+    script=./test/ercToNative.js
+    ;;
+esac

-./wait-for-monitor.sh
+MODE="$mode" ../e2e-commons/up.sh deploy blocks monitor
+
+MODE="$mode" ./wait-for-monitor.sh
 nohup ./periodically-check-all.sh < /dev/null > /dev/null 2>&1 &
 checkPID=$!

-docker-compose -f ../e2e-commons/docker-compose.yml run e2e yarn workspace monitor-e2e run start
+docker-compose -f ../e2e-commons/docker-compose.yml run e2e yarn workspace monitor-e2e run start $script
 rc=$?

 ../e2e-commons/down.sh
--- a/monitor-e2e/test/amb.js
+++ b/monitor-e2e/test/amb.js
@@ -25,6 +25,7 @@ describe('AMB', () => {

    describe('general', async () => {
      it('should contain fromHomeToForeignDiff', () => assert(data.fromHomeToForeignDiff === 0))
+      it('should contain fromHomeToForeignPBUDiff', () => assert(data.fromHomeToForeignPBUDiff === 0))
      it('should contain fromForeignToHomeDiff', () => assert(data.fromForeignToHomeDiff === 0))
      it('should contain lastChecked', () => assert(data.lastChecked >= 0))
      it('should contain timeDiff', () => assert(data.timeDiff >= 0))
@@ -114,7 +115,16 @@ describe('AMB', () => {

      await waitUntil(async () => {
        ;({ data } = await axios.get(`${baseUrl}`))
-        return data.fromHomeToForeignDiff !== 0
+        return data.fromHomeToForeignDiff === 1 && data.fromHomeToForeignPBUDiff === 0
+      })
+    })
+    it('should change fromHomeToForeignPBUDiff', async () => {
+      // send message
+      await sendAMBMessage(homeRPC.URL, user, amb.homeBox, amb.home, amb.foreignBox, true)
+
+      await waitUntil(async () => {
+        ;({ data } = await axios.get(`${baseUrl}`))
+        return data.fromHomeToForeignDiff === 1 && data.fromHomeToForeignPBUDiff === 1
      })
    })
    it('should change validatorsMatch', async () => {
--- a/monitor-e2e/test/ercToNative.js
+++ b/monitor-e2e/test/ercToNative.js
@@ -54,16 +54,16 @@ describe('ERC TO NATIVE with changing state of contracts', () => {
  })

  it('should consider chai token balance', async function() {
-    this.timeout(60000)
+    this.timeout(120000)
    await initializeChaiToken(foreignRPC.URL, ercToNativeBridge.foreign)
    await sendTokens(foreignRPC.URL, user, ercToNativeBridge.foreignToken, ercToNativeBridge.foreign)

    await waitUntil(async () => {
      ;({ data } = await axios.get(`${baseUrl}`))
-      const { erc20Balance, investedErc20Balance, accumulatedInterest } = data.foreign
      if (!data.foreign) {
        return false
      }
+      const { erc20Balance, investedErc20Balance, accumulatedInterest } = data.foreign
      return (
        data.balanceDiff === 0.02 &&
        erc20Balance === '0.02' &&
@@ -77,10 +77,10 @@ describe('ERC TO NATIVE with changing state of contracts', () => {

    await waitUntil(async () => {
      ;({ data } = await axios.get(`${baseUrl}`))
-      const { erc20Balance, investedErc20Balance, accumulatedInterest } = data.foreign
      if (!data.foreign) {
        return false
      }
+      const { erc20Balance, investedErc20Balance, accumulatedInterest } = data.foreign
      return (
        data.balanceDiff === 0.02 &&
        erc20Balance === '0.01' &&
@@ -94,10 +94,10 @@ describe('ERC TO NATIVE with changing state of contracts', () => {

    await waitUntil(async () => {
      ;({ data } = await axios.get(`${baseUrl}`))
-      const { erc20Balance, investedErc20Balance, accumulatedInterest } = data.foreign
      if (!data.foreign) {
        return false
      }
+      const { erc20Balance, investedErc20Balance, accumulatedInterest } = data.foreign
      return (
        data.balanceDiff === 0.02 &&
        erc20Balance === '0.005' &&
--- a/monitor-e2e/utils.js
+++ b/monitor-e2e/utils.js
@@ -44,12 +44,16 @@ const sendTokens = async (rpcUrl, account, tokenAddress, recipientAddress) => {
  })
 }

-const sendAMBMessage = async (rpcUrl, account, boxAddress, bridgeAddress, boxOtherSideAddress) => {
+const sendAMBMessage = async (rpcUrl, account, boxAddress, bridgeAddress, boxOtherSideAddress, manualLane = false) => {
  const web3 = new Web3(new Web3.providers.HttpProvider(rpcUrl))
  web3.eth.accounts.wallet.add(account.privateKey)
  const homeBox = new web3.eth.Contract(BOX_ABI, boxAddress)

-  await homeBox.methods.setValueOnOtherNetwork(3, bridgeAddress, boxOtherSideAddress).send({
+  await homeBox.methods[manualLane ? 'setValueOnOtherNetworkUsingManualLane' : 'setValueOnOtherNetwork'](
+    3,
+    bridgeAddress,
+    boxOtherSideAddress
+  ).send({
    from: account.address,
    gas: '400000'
  })
--- a/monitor-e2e/wait-for-monitor.sh
+++ b/monitor-e2e/wait-for-monitor.sh
@@ -6,10 +6,18 @@ check_files_exist() {
  rc=0
  for f in "${FILES[@]}"; do
    command="test -f responses/bridge/$f"
-    (docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor /bin/bash -c "$command") || rc=1
-    (docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor-erc20 /bin/bash -c "$command") || rc=1
-    (docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor-erc20-native /bin/bash -c "$command") || rc=1
-    (docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor-amb /bin/bash -c "$command") || rc=1
+    if [[ -z "$MODE" || "$MODE" == native-to-erc ]]; then
+      (docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor /bin/bash -c "$command") || rc=1
+    fi
+    if [[ -z "$MODE" || "$MODE" == erc-to-erc ]]; then
+      (docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor-erc20 /bin/bash -c "$command") || rc=1
+    fi
+    if [[ -z "$MODE" || "$MODE" == erc-to-native ]]; then
+      (docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor-erc20-native /bin/bash -c "$command") || rc=1
+    fi
+    if [[ -z "$MODE" || "$MODE" == amb ]]; then
+      (docker-compose -f ../e2e-commons/docker-compose.yml exec -T monitor-amb /bin/bash -c "$command") || rc=1
+    fi
  done
  return $rc
 }
--- a/monitor/.env.example
+++ b/monitor/.env.example
@@ -22,3 +22,9 @@ COMMON_FOREIGN_GAS_PRICE_FACTOR=1
 MONITOR_TX_NUMBER_THRESHOLD=100
 MONITOR_PORT=3003
 MONITOR_CACHE_EVENTS=true
+
+MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST=
+MONITOR_HOME_TO_FOREIGN_BLOCK_LIST=
+
+# MONITOR_HOME_VALIDATORS_BALANCE_ENABLE=0x... 0x... 0x...
+# MONITOR_FOREIGN_VALIDATORS_BALANCE_ENABLE=0x... 0x... 0x...
--- a/monitor/alerts.js
+++ b/monitor/alerts.js
@@ -1,27 +1,19 @@
 require('dotenv').config()
-const Web3 = require('web3')
 const logger = require('./logger')('alerts')
-const eventsInfo = require('./utils/events')
-const { getBlockNumber } = require('./utils/contract')
 const { processedMsgNotDelivered, eventWithoutReference } = require('./utils/message')
 const { BRIDGE_MODES } = require('../commons')
+const { web3Home, web3Foreign } = require('./utils/web3')

-const { COMMON_HOME_RPC_URL, COMMON_FOREIGN_RPC_URL } = process.env
-
-const homeProvider = new Web3.providers.HttpProvider(COMMON_HOME_RPC_URL)
-const web3Home = new Web3(homeProvider)
-
-const foreignProvider = new Web3.providers.HttpProvider(COMMON_FOREIGN_RPC_URL)
-const web3Foreign = new Web3(foreignProvider)
-
-async function main() {
+async function main(eventsInfo) {
  const {
+    homeBlockNumber,
+    foreignBlockNumber,
    homeToForeignRequests,
    homeToForeignConfirmations,
    foreignToHomeConfirmations,
    foreignToHomeRequests,
    bridgeMode
-  } = await eventsInfo()
+  } = eventsInfo

  let xSignatures
  let xAffirmations
@@ -33,7 +25,6 @@ async function main() {
    xAffirmations = foreignToHomeConfirmations.filter(eventWithoutReference(foreignToHomeRequests))
  }
  logger.debug('building misbehavior blocks')
-  const [homeBlockNumber, foreignBlockNumber] = await getBlockNumber(web3Home, web3Foreign)

  const baseRange = [false, false, false, false, false]
  const xSignaturesMisbehavior = buildRangesObject(
@@ -73,21 +64,21 @@ async function main() {

 /**
 * Finds the location for the blockNumber in a specific range starting from currentBlockNumber
- * @param {BN} currentBlockNumber
+ * @param {Number} currentBlockNumber
 * @returns {function({blockNumber?: *}): boolean[]}
 */
 const findMisbehaviorRange = currentBlockNumber => ({ blockNumber }) => {
-  const minus60 = currentBlockNumber.sub(Web3.utils.toBN(60))
-  const minus180 = currentBlockNumber.sub(Web3.utils.toBN(180))
-  const minus720 = currentBlockNumber.sub(Web3.utils.toBN(720))
-  const minus17280 = currentBlockNumber.sub(Web3.utils.toBN(17280))
+  const minus60 = currentBlockNumber - 60
+  const minus180 = currentBlockNumber - 180
+  const minus720 = currentBlockNumber - 720
+  const minus17280 = currentBlockNumber - 17280

  return [
-    minus60.lte(blockNumber),
-    minus180.lte(blockNumber) && minus60.gt(blockNumber),
-    minus720.lte(blockNumber) && minus180.gt(blockNumber),
-    minus17280.lte(blockNumber) && minus720.gt(blockNumber),
-    minus17280.gt(blockNumber)
+    minus60 <= blockNumber,
+    minus180 <= blockNumber && minus60 > blockNumber,
+    minus720 <= blockNumber && minus180 > blockNumber,
+    minus17280 <= blockNumber && minus720 > blockNumber,
+    minus17280 > blockNumber
  ]
 }

--- a/monitor/cache/.gitkeep
+++ b/monitor/cache/.gitkeep
--- a/monitor/checkWorker.js
+++ b/monitor/checkWorker.js
@@ -1,20 +1,16 @@
 require('dotenv').config()
-const Web3 = require('web3')
+const BN = require('bignumber.js')
 const logger = require('./logger')('checkWorker')
 const { getBridgeMode } = require('../commons')
 const getBalances = require('./getBalances')
 const getShortEventStats = require('./getShortEventStats')
 const validators = require('./validators')
+const getEventsInfo = require('./utils/events')
 const { writeFile, createDir } = require('./utils/file')
+const { saveCache } = require('./utils/web3Cache')
+const { web3Home } = require('./utils/web3')

-const { COMMON_HOME_BRIDGE_ADDRESS, COMMON_HOME_RPC_URL, MONITOR_BRIDGE_NAME } = process.env
-
-const MONITOR_VALIDATOR_HOME_TX_LIMIT = Number(process.env.MONITOR_VALIDATOR_HOME_TX_LIMIT) || 0
-const MONITOR_VALIDATOR_FOREIGN_TX_LIMIT = Number(process.env.MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) || 0
-const MONITOR_TX_NUMBER_THRESHOLD = Number(process.env.MONITOR_TX_NUMBER_THRESHOLD) || 100
-
-const homeProvider = new Web3.providers.HttpProvider(COMMON_HOME_RPC_URL)
-const web3Home = new Web3(homeProvider)
+const { COMMON_HOME_BRIDGE_ADDRESS, MONITOR_BRIDGE_NAME } = process.env

 const { HOME_ERC_TO_ERC_ABI } = require('../commons')

@@ -24,42 +20,27 @@ async function checkWorker() {
    const homeBridge = new web3Home.eth.Contract(HOME_ERC_TO_ERC_ABI, COMMON_HOME_BRIDGE_ADDRESS)
    const bridgeMode = await getBridgeMode(homeBridge)
    logger.debug('Bridge mode:', bridgeMode)
+    logger.debug('calling getEventsInfo()')
+    const eventsInfo = await getEventsInfo(bridgeMode)
    logger.debug('calling getBalances()')
-    const balances = await getBalances(bridgeMode)
+    const balances = await getBalances(bridgeMode, eventsInfo)
    logger.debug('calling getShortEventStats()')
-    const events = await getShortEventStats(bridgeMode)
+    const events = await getShortEventStats(bridgeMode, eventsInfo)
    const home = Object.assign({}, balances.home, events.home)
    const foreign = Object.assign({}, balances.foreign, events.foreign)
    const status = Object.assign({}, balances, events, { home }, { foreign })
+    if (status.balanceDiff && status.unclaimedBalance) {
+      status.balanceDiff = new BN(status.balanceDiff).minus(status.unclaimedBalance).toFixed()
+    }
    if (!status) throw new Error('status is empty: ' + JSON.stringify(status))
    status.health = true
    writeFile(`/responses/${MONITOR_BRIDGE_NAME}/getBalances.json`, status)
+    saveCache()

    logger.debug('calling validators()')
    const vBalances = await validators(bridgeMode)
    if (!vBalances) throw new Error('vBalances is empty: ' + JSON.stringify(vBalances))

-    vBalances.homeOk = true
-    vBalances.foreignOk = true
-
-    if (MONITOR_VALIDATOR_HOME_TX_LIMIT) {
-      for (const hv in vBalances.home.validators) {
-        if (vBalances.home.validators[hv].leftTx < MONITOR_TX_NUMBER_THRESHOLD) {
-          vBalances.homeOk = false
-          break
-        }
-      }
-    }
-
-    if (MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) {
-      for (const hv in vBalances.foreign.validators) {
-        if (vBalances.foreign.validators[hv].leftTx < MONITOR_TX_NUMBER_THRESHOLD) {
-          vBalances.foreignOk = false
-          break
-        }
-      }
-    }
-
    vBalances.ok = vBalances.homeOk && vBalances.foreignOk
    vBalances.health = true
    writeFile(`/responses/${MONITOR_BRIDGE_NAME}/validators.json`, vBalances)
--- a/monitor/checkWorker2.js
+++ b/monitor/checkWorker2.js
@@ -1,16 +1,20 @@
 require('dotenv').config()
 const logger = require('./logger')('checkWorker2')
 const eventsStats = require('./eventsStats')
+const getEventsInfo = require('./utils/events')
 const alerts = require('./alerts')
 const { writeFile, createDir } = require('./utils/file')
+const { saveCache } = require('./utils/web3Cache')

 const { MONITOR_BRIDGE_NAME } = process.env

 async function checkWorker2() {
  try {
    createDir(`/responses/${MONITOR_BRIDGE_NAME}`)
+    logger.debug('calling getEventsInfo()')
+    const eventsInfo = await getEventsInfo()
    logger.debug('calling eventsStats()')
-    const evStats = await eventsStats()
+    const evStats = await eventsStats(eventsInfo)
    if (!evStats) throw new Error('evStats is empty: ' + JSON.stringify(evStats))
    evStats.ok =
      (evStats.onlyInHomeDeposits || evStats.home.deliveredMsgNotProcessedInForeign).length === 0 &&
@@ -21,11 +25,12 @@ async function checkWorker2() {
    writeFile(`/responses/${MONITOR_BRIDGE_NAME}/eventsStats.json`, evStats)

    logger.debug('calling alerts()')
-    const _alerts = await alerts()
+    const _alerts = await alerts(eventsInfo)
    if (!_alerts) throw new Error('alerts is empty: ' + JSON.stringify(_alerts))
    _alerts.ok = !_alerts.executeAffirmations.mostRecentTxHash && !_alerts.executeSignatures.mostRecentTxHash
    _alerts.health = true
    writeFile(`/responses/${MONITOR_BRIDGE_NAME}/alerts.json`, _alerts)
+    saveCache()
    logger.debug('Done x2')
  } catch (e) {
    logger.error(e)
--- a/monitor/checkWorker3.js
+++ b/monitor/checkWorker3.js
@@ -1,15 +1,15 @@
 require('dotenv').config()
-const Web3 = require('web3')
 const logger = require('./logger')('checkWorker3')
 const stuckTransfers = require('./stuckTransfers')
+const detectMediators = require('./detectMediators')
+const detectFailures = require('./detectFailures')
 const { writeFile, createDir } = require('./utils/file')
+const { web3Home } = require('./utils/web3')
+const { saveCache } = require('./utils/web3Cache')

-const { MONITOR_BRIDGE_NAME, COMMON_HOME_BRIDGE_ADDRESS, COMMON_HOME_RPC_URL } = process.env
+const { MONITOR_BRIDGE_NAME, COMMON_HOME_BRIDGE_ADDRESS } = process.env
 const { getBridgeMode, HOME_NATIVE_TO_ERC_ABI, BRIDGE_MODES } = require('../commons')

-const homeProvider = new Web3.providers.HttpProvider(COMMON_HOME_RPC_URL)
-const web3Home = new Web3(homeProvider)
-
 async function checkWorker3() {
  try {
    const homeBridge = new web3Home.eth.Contract(HOME_NATIVE_TO_ERC_ABI, COMMON_HOME_BRIDGE_ADDRESS)
@@ -23,6 +23,23 @@ async function checkWorker3() {
      transfers.health = true
      writeFile(`/responses/${MONITOR_BRIDGE_NAME}/stuckTransfers.json`, transfers)
      logger.debug('Done')
+    } else if (bridgeMode === BRIDGE_MODES.ARBITRARY_MESSAGE) {
+      createDir(`/responses/${MONITOR_BRIDGE_NAME}`)
+
+      logger.debug('calling detectMediators()')
+      const mediators = await detectMediators(bridgeMode)
+      mediators.ok = true
+      mediators.health = true
+      writeFile(`/responses/${MONITOR_BRIDGE_NAME}/mediators.json`, mediators)
+
+      logger.debug('calling detectFailures()')
+      const failures = await detectFailures(bridgeMode)
+      failures.ok = true
+      failures.health = true
+      writeFile(`/responses/${MONITOR_BRIDGE_NAME}/failures.json`, failures)
+
+      saveCache()
+      logger.debug('Done')
    }
  } catch (e) {
    logger.error('checkWorker3.js', e)
--- a/monitor/detectFailures.js
+++ b/monitor/detectFailures.js
@@ -0,0 +1,86 @@
+require('dotenv').config()
+const logger = require('./logger')('alerts')
+const eventsInfo = require('./utils/events')
+const { normalizeAMBMessageEvent } = require('../commons')
+const { getHomeBlockNumber, getForeignBlockNumber } = require('./utils/web3')
+
+function normalize(events) {
+  const requests = {}
+  events.forEach(event => {
+    const request = normalizeAMBMessageEvent(event)
+    request.requestTx = event.transactionHash
+    requests[request.messageId] = request
+  })
+  return confirmation => {
+    const request = requests[confirmation.returnValues.messageId] || {}
+    return {
+      ...request,
+      status: false,
+      executionTx: confirmation.transactionHash,
+      executionBlockNumber: confirmation.blockNumber
+    }
+  }
+}
+
+async function main(mode) {
+  const {
+    homeToForeignRequests,
+    homeToForeignConfirmations,
+    foreignToHomeConfirmations,
+    foreignToHomeRequests
+  } = await eventsInfo(mode)
+  const hasFailed = event => !event.returnValues.status
+  const cmp = (a, b) => b.executionBlockNumber - a.executionBlockNumber
+  const failedForeignToHomeMessages = foreignToHomeConfirmations
+    .filter(hasFailed)
+    .map(normalize(foreignToHomeRequests))
+    .sort(cmp)
+  const failedHomeToForeignMessages = homeToForeignConfirmations
+    .filter(hasFailed)
+    .map(normalize(homeToForeignRequests))
+    .sort(cmp)
+
+  const homeBlockNumber = await getHomeBlockNumber()
+  const foreignBlockNumber = await getForeignBlockNumber()
+
+  const blockRanges = [1000, 10000, 100000, 1000000]
+  const rangeNames = [
+    `last${blockRanges[0]}blocks`,
+    ...blockRanges.slice(0, blockRanges.length - 1).map((n, i) => `last${n}to${blockRanges[i + 1]}blocks`),
+    `before${blockRanges[blockRanges.length - 1]}blocks`
+  ]
+
+  const countFailures = (failedMessages, lastBlockNumber) => {
+    const result = {}
+    rangeNames.forEach(name => {
+      result[name] = 0
+    })
+    failedMessages.forEach(message => {
+      const blockAge = lastBlockNumber - message.executionBlockNumber
+      let rangeIndex = blockRanges.findIndex(n => n > blockAge)
+      if (rangeIndex === -1) {
+        rangeIndex = blockRanges.length
+      }
+      result[rangeNames[rangeIndex]] += 1
+    })
+    return result
+  }
+
+  logger.debug('Done')
+
+  return {
+    homeToForeign: {
+      total: failedHomeToForeignMessages.length,
+      stats: countFailures(failedHomeToForeignMessages, foreignBlockNumber),
+      lastFailures: failedHomeToForeignMessages.slice(0, 5)
+    },
+    foreignToHome: {
+      total: failedForeignToHomeMessages.length,
+      stats: countFailures(failedForeignToHomeMessages, homeBlockNumber),
+      lastFailures: failedForeignToHomeMessages.slice(0, 5)
+    },
+    lastChecked: Math.floor(Date.now() / 1000)
+  }
+}
+
+module.exports = main
--- a/monitor/detectMediators.js
+++ b/monitor/detectMediators.js
@@ -0,0 +1,148 @@
+require('dotenv').config()
+const logger = require('./logger')('stuckTransfers.js')
+const { isHomeContract, isForeignContract } = require('./utils/web3Cache')
+const eventsInfo = require('./utils/events')
+const { getHomeTxSender, getForeignTxSender } = require('./utils/web3Cache')
+const { addExecutionStatus } = require('./utils/message')
+const { normalizeAMBMessageEvent } = require('../commons')
+
+function countInteractions(requests) {
+  const stats = {}
+  requests.forEach(msg => {
+    if (!stats[msg.sender]) {
+      stats[msg.sender] = {}
+    }
+    if (!stats[msg.sender][msg.executor]) {
+      stats[msg.sender][msg.executor] = 0
+    }
+    stats[msg.sender][msg.executor] += 1
+  })
+  return stats
+}
+
+const normalize = event => ({
+  ...normalizeAMBMessageEvent(event),
+  txHash: event.transactionHash,
+  logIndex: event.transactionLogIndex
+})
+
+const flat = arrays => Array.prototype.concat.apply([], arrays)
+
+function findPermanentMediators(homeToForeignC2C, foreignToHomeC2C) {
+  return flat(
+    Object.entries(homeToForeignC2C).map(([homeMediator, homeStats]) =>
+      Object.entries(foreignToHomeC2C)
+        .map(([foreignMediator, foreignStats]) => ({
+          homeMediator,
+          foreignMediator,
+          homeToForeignRequests: homeStats[foreignMediator],
+          foreignToHomeRequests: foreignStats[homeMediator]
+        }))
+        .filter(stats => stats.homeToForeignRequests && stats.foreignToHomeRequests)
+    )
+  )
+}
+
+function findFloatingMediators(homeToForeignC2C, foreignToHomeC2C) {
+  return Object.entries(homeToForeignC2C)
+    .map(([homeMediator, homeStats]) => {
+      const noResponses = ([executor]) => !foreignToHomeC2C[executor] || !foreignToHomeC2C[executor][homeMediator]
+      const executorRequestPairs = Object.entries(homeStats).filter(noResponses)
+      return {
+        mediator: homeMediator,
+        executors: executorRequestPairs.map(pair => pair[0]),
+        requests: executorRequestPairs.map(pair => pair[1])
+      }
+    })
+    .filter(stats => stats.executors.length > 0)
+}
+
+function findRemotelyControlledMediators(statsU2C) {
+  return Object.entries(statsU2C).map(([user, stats]) => ({
+    user,
+    executors: Object.keys(stats),
+    requests: Object.values(stats)
+  }))
+}
+
+function findUnknown(statsA2U) {
+  return Object.entries(statsA2U).map(([sender, stats]) => ({
+    sender,
+    executors: Object.keys(stats),
+    requests: Object.values(stats)
+  }))
+}
+
+async function main(mode) {
+  const {
+    homeToForeignRequests,
+    foreignToHomeRequests,
+    homeToForeignConfirmations,
+    foreignToHomeConfirmations
+  } = await eventsInfo(mode)
+  const homeToForeign = homeToForeignRequests
+    .map(normalize)
+    .map(addExecutionStatus(homeToForeignConfirmations))
+    .filter(x => typeof x.status === 'boolean')
+  const foreignToHome = foreignToHomeRequests
+    .map(normalize)
+    .map(addExecutionStatus(foreignToHomeConfirmations))
+    .filter(x => typeof x.status === 'boolean')
+
+  for (const event of homeToForeign) {
+    // AMB contract emits a single UserRequestForSignature event for every home->foreign request.
+    // If index of such event in logs is not equal to 0x0, then some other events occurred before it,
+    // meaning that the sender was a contract.
+    // Alternatively, the sender is a contract, if the message sender is not equal to tx.origin.
+    event.isSenderAContract = event.logIndex !== '0x0' || (await getHomeTxSender(event.txHash)) !== event.sender
+
+    // Executor is definitely a contract if a message execution failed, since message calls to EOA always succeed.
+    // Alternatively, the executor is checked to be a contract by looking at its bytecode size.
+    event.isExecutorAContract = !event.status || (await isForeignContract(event.executor))
+  }
+  for (const event of foreignToHome) {
+    // AMB contract emits a single UserRequestForAffirmation event for every foreign->home request.
+    // If index of such event in logs is not equal to 0x0, then some other events occurred before it,
+    // meaning that the sender was a contract.
+    // Alternatively, the sender is a contract, if the message sender is not equal to tx.origin.
+    event.isSenderAContract = event.logIndex !== '0x0' || (await getForeignTxSender(event.txHash)) !== event.sender
+
+    // Executor is definitely a contract if a message execution failed, since message calls to EOA always succeed.
+    // Alternatively, the executor is checked to be a contract by looking at its bytecode size.
+    event.isExecutorAContract = !event.status || (await isHomeContract(event.executor))
+  }
+  const C2C = event => event.isSenderAContract && event.isExecutorAContract
+  const U2C = event => !event.isSenderAContract && event.isExecutorAContract
+  const A2U = event => !event.isExecutorAContract
+
+  const homeToForeignC2C = countInteractions(homeToForeign.filter(C2C))
+  const foreignToHomeC2C = countInteractions(foreignToHome.filter(C2C))
+  const homeToForeignU2C = countInteractions(homeToForeign.filter(U2C))
+  const foreignToHomeU2C = countInteractions(foreignToHome.filter(U2C))
+  const homeToForeignA2U = countInteractions(homeToForeign.filter(A2U))
+  const foreignToHomeA2U = countInteractions(foreignToHome.filter(A2U))
+
+  const permanentMediators = findPermanentMediators(homeToForeignC2C, foreignToHomeC2C)
+  const floatingMediators = {
+    home: findFloatingMediators(homeToForeignC2C, foreignToHomeC2C),
+    foreign: findFloatingMediators(foreignToHomeC2C, homeToForeignC2C)
+  }
+  const remotelyControlledMediators = {
+    home: findRemotelyControlledMediators(homeToForeignU2C),
+    foreign: findRemotelyControlledMediators(foreignToHomeU2C)
+  }
+  const unknown = {
+    home: findUnknown(homeToForeignA2U),
+    foreign: findUnknown(foreignToHomeA2U)
+  }
+
+  logger.debug('Done')
+  return {
+    permanentMediators,
+    floatingMediators,
+    remotelyControlledMediators,
+    unknown,
+    lastChecked: Math.floor(Date.now() / 1000)
+  }
+}
+module.exports = main
--- a/monitor/docker-compose.yml
+++ b/monitor/docker-compose.yml
@@ -4,11 +4,12 @@ services:
  monitor:
    image: poanetwork/tokenbridge-monitor:latest
    ports:
-    - "${MONITOR_PORT}:${MONITOR_PORT}"
+      - "${MONITOR_PORT}:${MONITOR_PORT}"
    env_file: ./.env
-    environment: 
+    environment:
      - NODE_ENV=production
    volumes:
      - ./responses:/mono/monitor/responses
+      - ./cache:/mono/monitor/cache
    restart: unless-stopped
    entrypoint: "yarn start"
--- a/monitor/eventsStats.js
+++ b/monitor/eventsStats.js
@@ -1,16 +1,27 @@
 require('dotenv').config()
-const eventsInfo = require('./utils/events')
-const { processedMsgNotDelivered, deliveredMsgNotProcessed, eventWithoutReference } = require('./utils/message')
+const {
+  processedMsgNotDelivered,
+  deliveredMsgNotProcessed,
+  eventWithoutReference,
+  unclaimedHomeToForeignRequests
+} = require('./utils/message')
+const { getHomeTxSender } = require('./utils/web3Cache')
 const { BRIDGE_MODES } = require('../commons')

-async function main() {
+const {
+  MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST,
+  MONITOR_HOME_TO_FOREIGN_BLOCK_LIST,
+  MONITOR_HOME_TO_FOREIGN_CHECK_SENDER
+} = process.env
+
+async function main(eventsInfo) {
  const {
    homeToForeignRequests,
    homeToForeignConfirmations,
    foreignToHomeConfirmations,
    foreignToHomeRequests,
    bridgeMode
-  } = await eventsInfo()
+  } = eventsInfo

  if (bridgeMode === BRIDGE_MODES.ARBITRARY_MESSAGE) {
    return {
@@ -33,17 +44,30 @@ async function main() {
      lastChecked: Math.floor(Date.now() / 1000)
    }
  } else {
-    const onlyInHomeDeposits = homeToForeignRequests.filter(eventWithoutReference(homeToForeignConfirmations))
+    let onlyInHomeDeposits = homeToForeignRequests.filter(eventWithoutReference(homeToForeignConfirmations))
    const onlyInForeignDeposits = homeToForeignConfirmations.filter(eventWithoutReference(homeToForeignRequests))

    const onlyInHomeWithdrawals = foreignToHomeConfirmations.filter(eventWithoutReference(foreignToHomeRequests))
    const onlyInForeignWithdrawals = foreignToHomeRequests.filter(eventWithoutReference(foreignToHomeConfirmations))

+    const unclaimedStats = {}
+    if (MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST || MONITOR_HOME_TO_FOREIGN_BLOCK_LIST) {
+      const unclaimedFilter = unclaimedHomeToForeignRequests()
+      if (MONITOR_HOME_TO_FOREIGN_CHECK_SENDER === 'true') {
+        for (let i = 0; i < onlyInHomeDeposits.length; i++) {
+          onlyInHomeDeposits[i].sender = await getHomeTxSender(onlyInHomeDeposits[i].transactionHash)
+        }
+      }
+      unclaimedStats.unclaimedHomeDeposits = onlyInHomeDeposits.filter(unclaimedFilter)
+      onlyInHomeDeposits = onlyInHomeDeposits.filter(e => !unclaimedFilter(e))
+    }
+
    return {
      onlyInHomeDeposits,
      onlyInForeignDeposits,
      onlyInHomeWithdrawals,
      onlyInForeignWithdrawals,
+      ...unclaimedStats,
      lastChecked: Math.floor(Date.now() / 1000)
    }
  }
--- a/monitor/getBalances.js
+++ b/monitor/getBalances.js
@@ -1,24 +1,17 @@
 require('dotenv').config()
 const BN = require('bignumber.js')
-const Web3 = require('web3')
+const Web3Utils = require('web3').utils
 const logger = require('./logger')('getBalances')
 const { BRIDGE_MODES } = require('../commons')
-
-const Web3Utils = Web3.utils
+const { web3Home, web3Foreign, getHomeBlockNumber } = require('./utils/web3')

 const {
-  COMMON_HOME_RPC_URL,
-  COMMON_FOREIGN_RPC_URL,
+  MONITOR_HOME_START_BLOCK,
+  MONITOR_FOREIGN_START_BLOCK,
  COMMON_HOME_BRIDGE_ADDRESS,
  COMMON_FOREIGN_BRIDGE_ADDRESS
 } = process.env

-const homeProvider = new Web3.providers.HttpProvider(COMMON_HOME_RPC_URL)
-const web3Home = new Web3(homeProvider)
-
-const foreignProvider = new Web3.providers.HttpProvider(COMMON_FOREIGN_RPC_URL)
-const web3Foreign = new Web3(foreignProvider)
-
 const {
  ERC20_ABI,
  ERC677_ABI,
@@ -30,21 +23,59 @@ const {
  FOREIGN_NATIVE_TO_ERC_ABI
 } = require('../commons')

-async function main(bridgeMode) {
+async function main(bridgeMode, eventsInfo) {
+  const {
+    homeBlockNumber,
+    foreignBlockNumber,
+    homeToForeignConfirmations,
+    foreignToHomeConfirmations,
+    homeDelayedBlockNumber,
+    foreignDelayedBlockNumber
+  } = eventsInfo
+
+  // Events in the ./utils/events.js are fetched for different block ranges,
+  // In order to be consistent with the balance values, the following values might be needed
+
+  // Foreign balance should represent all UserRequestForAffirmation events up to block `N - requiredBlockConfirmation()`
+  // and all RelayedMessage events up to block `N`.
+  // This constant tells the difference between bridge balance at block `N - requiredBlockConfirmation() + 1`
+  // and the actual value monitor is interested in.
+  const lateForeignConfirmationsTotalValue = BN.sum(
+    0,
+    ...homeToForeignConfirmations.filter(e => e.blockNumber > foreignDelayedBlockNumber).map(e => e.value)
+  )
+  // Home balance should represent all UserRequestForSignature events up to block `M - requiredBlockConfirmation()`
+  // and all AffirmationCompleted events up to block `M`.
+  // This constant tells the difference between bridge balance at block `M - requiredBlockConfirmation() + 1`
+  // and the actual value monitor is interested in.
+  const lateHomeConfirmationsTotalValue = BN.sum(
+    0,
+    ...foreignToHomeConfirmations.filter(e => e.blockNumber > homeDelayedBlockNumber).map(e => e.value)
+  )
+
+  const blockRanges = {
+    startBlockHome: MONITOR_HOME_START_BLOCK,
+    endBlockHome: homeBlockNumber,
+    startBlockForeign: MONITOR_FOREIGN_START_BLOCK,
+    endBlockForeign: foreignBlockNumber
+  }
+
  if (bridgeMode === BRIDGE_MODES.ERC_TO_ERC) {
    const foreignBridge = new web3Foreign.eth.Contract(FOREIGN_ERC_TO_ERC_ABI, COMMON_FOREIGN_BRIDGE_ADDRESS)
    const erc20Address = await foreignBridge.methods.erc20token().call()
    const erc20Contract = new web3Foreign.eth.Contract(ERC20_ABI, erc20Address)
    logger.debug('calling erc20Contract.methods.balanceOf')
-    const foreignErc20Balance = await erc20Contract.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+    const foreignErc20Balance = await erc20Contract.methods
+      .balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS)
+      .call({}, foreignDelayedBlockNumber)
    const homeBridge = new web3Home.eth.Contract(HOME_ERC_TO_ERC_ABI, COMMON_HOME_BRIDGE_ADDRESS)
    logger.debug('calling homeBridge.methods.erc677token')
    const tokenAddress = await homeBridge.methods.erc677token().call()
    const tokenContract = new web3Home.eth.Contract(ERC677_ABI, tokenAddress)
    logger.debug('calling tokenContract.methods.totalSupply()')
-    const totalSupply = await tokenContract.methods.totalSupply().call()
-    const foreignBalanceBN = new BN(foreignErc20Balance)
-    const foreignTotalSupplyBN = new BN(totalSupply)
+    const totalSupply = await tokenContract.methods.totalSupply().call({}, homeDelayedBlockNumber)
+    const foreignBalanceBN = new BN(foreignErc20Balance).plus(lateForeignConfirmationsTotalValue)
+    const foreignTotalSupplyBN = new BN(totalSupply).plus(lateHomeConfirmationsTotalValue)
    const diff = foreignBalanceBN.minus(foreignTotalSupplyBN).toString(10)
    logger.debug('Done')
    return {
@@ -55,18 +86,19 @@ async function main(bridgeMode) {
        erc20Balance: Web3Utils.fromWei(foreignErc20Balance)
      },
      balanceDiff: Number(Web3Utils.fromWei(diff)),
+      ...blockRanges,
      lastChecked: Math.floor(Date.now() / 1000)
    }
  } else if (bridgeMode === BRIDGE_MODES.NATIVE_TO_ERC || bridgeMode === BRIDGE_MODES.NATIVE_TO_ERC_V1) {
    logger.debug('calling web3Home.eth.getBalance')
    const foreignBridge = new web3Foreign.eth.Contract(FOREIGN_NATIVE_TO_ERC_ABI, COMMON_FOREIGN_BRIDGE_ADDRESS)
    const erc20Address = await foreignBridge.methods.erc677token().call()
-    const homeBalance = await web3Home.eth.getBalance(COMMON_HOME_BRIDGE_ADDRESS)
+    const homeBalance = await web3Home.eth.getBalance(COMMON_HOME_BRIDGE_ADDRESS, homeDelayedBlockNumber)
    const tokenContract = new web3Foreign.eth.Contract(ERC20_ABI, erc20Address)
    logger.debug('calling tokenContract.methods.totalSupply()')
-    const totalSupply = await tokenContract.methods.totalSupply().call()
-    const homeBalanceBN = new BN(homeBalance)
-    const foreignTotalSupplyBN = new BN(totalSupply)
+    const totalSupply = await tokenContract.methods.totalSupply().call({}, foreignDelayedBlockNumber)
+    const homeBalanceBN = new BN(homeBalance).plus(lateHomeConfirmationsTotalValue)
+    const foreignTotalSupplyBN = new BN(totalSupply).plus(lateForeignConfirmationsTotalValue)
    const diff = homeBalanceBN.minus(foreignTotalSupplyBN).toString(10)
    logger.debug('Done')
    return {
@@ -77,6 +109,7 @@ async function main(bridgeMode) {
        totalSupply: Web3Utils.fromWei(totalSupply)
      },
      balanceDiff: Number(Web3Utils.fromWei(diff)),
+      ...blockRanges,
      lastChecked: Math.floor(Date.now() / 1000)
    }
  } else if (bridgeMode === BRIDGE_MODES.ERC_TO_NATIVE) {
@@ -103,21 +136,25 @@ async function main(bridgeMode) {
    }

    logger.debug('calling erc20Contract.methods.balanceOf')
-    const foreignErc20Balance = await erc20Contract.methods.balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS).call()
+    const foreignErc20Balance = await erc20Contract.methods
+      .balanceOf(COMMON_FOREIGN_BRIDGE_ADDRESS)
+      .call({}, foreignDelayedBlockNumber)

    const homeBridge = new web3Home.eth.Contract(HOME_ERC_TO_NATIVE_ABI, COMMON_HOME_BRIDGE_ADDRESS)
    logger.debug('calling homeBridge.methods.blockRewardContract')
    const blockRewardAddress = await homeBridge.methods.blockRewardContract().call()
    const blockRewardContract = new web3Home.eth.Contract(BLOCK_REWARD_ABI, blockRewardAddress)
+    const homeBlockNumber = await getHomeBlockNumber()
    logger.debug('calling blockReward.methods.mintedTotally')
-    const mintedCoins = await blockRewardContract.methods.mintedTotallyByBridge(COMMON_HOME_BRIDGE_ADDRESS).call()
+    const mintedCoins = await blockRewardContract.methods
+      .mintedTotallyByBridge(COMMON_HOME_BRIDGE_ADDRESS)
+      .call({}, homeBlockNumber)
    logger.debug('calling homeBridge.methods.totalBurntCoins')
-    const burntCoins = await homeBridge.methods.totalBurntCoins().call()
-
+    const burntCoins = await homeBridge.methods.totalBurntCoins().call({}, homeDelayedBlockNumber)
    const mintedCoinsBN = new BN(mintedCoins)
    const burntCoinsBN = new BN(burntCoins)
    const totalSupplyBN = mintedCoinsBN.minus(burntCoinsBN)
-    const foreignErc20BalanceBN = new BN(foreignErc20Balance)
+    const foreignErc20BalanceBN = new BN(foreignErc20Balance).plus(lateForeignConfirmationsTotalValue)
    const investedAmountInDaiBN = new BN(investedAmountInDai)
    const bridgeDsrBalanceBN = new BN(bridgeDsrBalance)

@@ -142,12 +179,14 @@ async function main(bridgeMode) {
      },
      foreign,
      balanceDiff: Number(Web3Utils.fromWei(diff)),
+      ...blockRanges,
      lastChecked: Math.floor(Date.now() / 1000)
    }
  } else if (bridgeMode === BRIDGE_MODES.ARBITRARY_MESSAGE) {
    return {
      home: {},
      foreign: {},
+      ...blockRanges,
      lastChecked: Math.floor(Date.now() / 1000)
    }
  } else {
--- a/monitor/getShortEventStats.js
+++ b/monitor/getShortEventStats.js
@@ -1,18 +1,36 @@
 require('dotenv').config()
-const eventsInfo = require('./utils/events')
+const BN = require('bignumber.js')
+const Web3Utils = require('web3').utils
+const {
+  eventWithoutReference,
+  deliveredMsgNotProcessed,
+  unclaimedHomeToForeignRequests,
+  manuallyProcessedAMBHomeToForeignRequests
+} = require('./utils/message')
 const { BRIDGE_MODES } = require('../commons')
+const { getHomeTxSender } = require('./utils/web3Cache')

-async function main(bridgeMode) {
+const {
+  MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST,
+  MONITOR_HOME_TO_FOREIGN_BLOCK_LIST,
+  MONITOR_HOME_TO_FOREIGN_CHECK_SENDER
+} = process.env
+
+async function main(bridgeMode, eventsInfo) {
  const {
    homeToForeignConfirmations,
    homeToForeignRequests,
    foreignToHomeConfirmations,
    foreignToHomeRequests
-  } = await eventsInfo(bridgeMode)
+  } = eventsInfo

  if (bridgeMode === BRIDGE_MODES.ARBITRARY_MESSAGE) {
+    const onlyInHomeRequests = homeToForeignRequests.filter(deliveredMsgNotProcessed(homeToForeignConfirmations))
+    const manuallyProcessedRequests = onlyInHomeRequests.filter(manuallyProcessedAMBHomeToForeignRequests())
    return {
-      fromHomeToForeignDiff: homeToForeignRequests.length - homeToForeignConfirmations.length,
+      fromHomeToForeignDiff:
+        homeToForeignRequests.length - homeToForeignConfirmations.length - manuallyProcessedRequests.length,
+      fromHomeToForeignPBUDiff: manuallyProcessedRequests.length,
      fromForeignToHomeDiff: foreignToHomeConfirmations.length - foreignToHomeRequests.length,
      home: {
        toForeign: homeToForeignRequests.length,
@@ -24,9 +42,26 @@ async function main(bridgeMode) {
      }
    }
  } else {
-    return {
+    const stats = {
      depositsDiff: homeToForeignRequests.length - homeToForeignConfirmations.length,
-      withdrawalDiff: foreignToHomeConfirmations.length - foreignToHomeRequests.length,
+      withdrawalDiff: foreignToHomeConfirmations.length - foreignToHomeRequests.length
+    }
+    if (MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST || MONITOR_HOME_TO_FOREIGN_BLOCK_LIST) {
+      const onlyInHomeDeposits = homeToForeignRequests.filter(eventWithoutReference(homeToForeignConfirmations))
+      if (MONITOR_HOME_TO_FOREIGN_CHECK_SENDER === 'true') {
+        for (let i = 0; i < onlyInHomeDeposits.length; i++) {
+          onlyInHomeDeposits[i].sender = await getHomeTxSender(onlyInHomeDeposits[i].transactionHash)
+        }
+      }
+
+      const unclaimedPool = onlyInHomeDeposits.filter(unclaimedHomeToForeignRequests())
+
+      stats.depositsDiff -= unclaimedPool.length
+      stats.unclaimedDiff = unclaimedPool.length
+      stats.unclaimedBalance = Web3Utils.fromWei(BN.sum(0, ...unclaimedPool.map(e => e.value)).toFixed())
+    }
+    return {
+      ...stats,
      home: {
        deposits: homeToForeignRequests.length,
        withdrawals: foreignToHomeConfirmations.length
--- a/monitor/index.js
+++ b/monitor/index.js
@@ -1,16 +1,20 @@
 require('dotenv').config()
 const express = require('express')
+const cors = require('cors')
 const { readFile } = require('./utils/file')

 const app = express()
 const bridgeRouter = express.Router({ mergeParams: true })

+app.use(cors())
+
 app.get('/favicon.ico', (req, res) => res.sendStatus(204))
 app.use('/:bridgeName', bridgeRouter)

-bridgeRouter.get('/', async (req, res, next) => {
+bridgeRouter.get('/:file(validators|eventsStats|alerts|mediators|stuckTransfers|failures)?', (req, res, next) => {
  try {
-    const results = await readFile(`./responses/${req.params.bridgeName}/getBalances.json`)
+    const { bridgeName, file } = req.params
+    const results = readFile(`./responses/${bridgeName}/${file || 'getBalances'}.json`)
    res.json(results)
  } catch (e) {
    // this will eventually be handled by your error handling middleware
@@ -18,39 +22,11 @@ bridgeRouter.get('/', async (req, res, next) => {
  }
 })

-bridgeRouter.get('/validators', async (req, res, next) => {
+bridgeRouter.get('/metrics', (req, res, next) => {
  try {
-    const results = await readFile(`./responses/${req.params.bridgeName}/validators.json`)
-    res.json(results)
-  } catch (e) {
-    // this will eventually be handled by your error handling middleware
-    next(e)
-  }
-})
-
-bridgeRouter.get('/eventsStats', async (req, res, next) => {
-  try {
-    const results = await readFile(`./responses/${req.params.bridgeName}/eventsStats.json`)
-    res.json(results)
-  } catch (e) {
-    // this will eventually be handled by your error handling middleware
-    next(e)
-  }
-})
-
-bridgeRouter.get('/alerts', async (req, res, next) => {
-  try {
-    const results = await readFile(`./responses/${req.params.bridgeName}/alerts.json`)
-    res.json(results)
-  } catch (e) {
-    next(e)
-  }
-})
-
-bridgeRouter.get('/stuckTransfers', async (req, res, next) => {
-  try {
-    const results = await readFile(`./responses/${req.params.bridgeName}/stuckTransfers.json`)
-    res.json(results)
+    const { bridgeName } = req.params
+    const metrics = readFile(`./responses/${bridgeName}/metrics.txt`, false)
+    res.type('text').send(metrics)
  } catch (e) {
    next(e)
  }
--- a/monitor/metricsWorker.js
+++ b/monitor/metricsWorker.js
@@ -0,0 +1,20 @@
+require('dotenv').config()
+const logger = require('./logger')('metricsWorker')
+const { writeFile, createDir } = require('./utils/file')
+const getPrometheusMetrics = require('./prometheusMetrics')
+
+const { MONITOR_BRIDGE_NAME } = process.env
+
+async function metricsWorker() {
+  try {
+    createDir(`/responses/${MONITOR_BRIDGE_NAME}`)
+    logger.debug('calling getPrometheusMetrics()')
+    const metrics = await getPrometheusMetrics(MONITOR_BRIDGE_NAME)
+    if (!metrics) throw new Error('metrics is empty: ' + JSON.stringify(metrics))
+    writeFile(`/responses/${MONITOR_BRIDGE_NAME}/metrics.txt`, metrics, { stringify: false })
+    logger.debug('Done')
+  } catch (e) {
+    logger.error(e)
+  }
+}
+metricsWorker()
--- a/monitor/package.json
+++ b/monitor/package.json
@@ -4,7 +4,7 @@
  "description": "",
  "main": "index.js",
  "scripts": {
-    "check-all": "timeout -s 9 5m node checkWorker.js && timeout -s 9 5m node checkWorker2.js && timeout -s 9 5m node checkWorker3.js",
+    "check-all": "timeout -s 9 5m node checkWorker.js && timeout -s 9 5m node checkWorker2.js && timeout -s 9 5m node checkWorker3.js && timeout -s 9 10s node metricsWorker.js",
    "start": "node index.js",
    "check-and-start": "yarn check-all && yarn start",
    "lint": "eslint . --ignore-path ../.eslintignore",
@@ -14,14 +14,15 @@
  "author": "",
  "license": "ISC",
  "dependencies": {
-    "bignumber.js": "^6.0.0",
+    "bignumber.js": "^9.0.1",
+    "cors": "^2.8.5",
    "dotenv": "^5.0.1",
    "express": "^4.16.3",
    "node-fetch": "^2.1.2",
-    "web3": "1.0.0-beta.34"
+    "web3": "^1.3.0"
  },
  "engines": {
-    "node": ">=8.9"
+    "node": ">= 10.18"
  },
  "devDependencies": {
    "chai": "^4.2.0"
--- a/monitor/prometheusMetrics.js
+++ b/monitor/prometheusMetrics.js
@@ -0,0 +1,137 @@
+require('dotenv').config()
+const logger = require('./logger')('getBalances')
+const { readFile } = require('./utils/file')
+
+const {
+  MONITOR_HOME_START_BLOCK,
+  MONITOR_FOREIGN_START_BLOCK,
+  MONITOR_HOME_VALIDATORS_BALANCE_ENABLE,
+  MONITOR_FOREIGN_VALIDATORS_BALANCE_ENABLE
+} = process.env
+
+function BridgeConf(type, validatorsBalanceEnable, alertTargetFunc, failureDirection) {
+  this.type = type
+  this.validatorsBalanceEnable = validatorsBalanceEnable
+  this.alertTargetFunc = alertTargetFunc
+  this.failureDirection = failureDirection
+}
+
+const BRIDGE_CONFS = [
+  new BridgeConf('home', MONITOR_HOME_VALIDATORS_BALANCE_ENABLE, 'executeAffirmations', 'homeToForeign'),
+  new BridgeConf('foreign', MONITOR_FOREIGN_VALIDATORS_BALANCE_ENABLE, 'executeSignatures', 'foreignToHome')
+]
+
+function hasError(obj) {
+  return 'error' in obj
+}
+
+// Try to collect all metrics from JSON responses and then
+// discard all unsuccessfully retrieved ones
+async function getPrometheusMetrics(bridgeName) {
+  const responsePath = jsonName => `./responses/${bridgeName}/${jsonName}.json`
+
+  const metrics = {}
+
+  // Balance metrics
+  const balancesFile = readFile(responsePath('getBalances'))
+
+  if (!hasError(balancesFile)) {
+    const { home, foreign, ...commonBalances } = balancesFile
+
+    const balanceMetrics = {
+      // ERC_TO_ERC or ERC_TO_NATIVE mode
+      balances_home_value: home.totalSupply,
+      balances_home_txs_deposit: home.deposits,
+      balances_home_txs_withdrawal: home.withdrawals,
+      balances_foreign_value: foreign.erc20Balance,
+      balances_foreign_txs_deposit: foreign.deposits,
+      balances_foreign_txs_withdrawal: foreign.withdrawals,
+
+      // Not ARBITRARY_MESSAGE mode
+      balances_diff_value: commonBalances.balanceDiff,
+      balances_diff_deposit: commonBalances.depositsDiff,
+      balances_diff_withdrawal: commonBalances.withdrawalDiff,
+
+      // MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST or MONITOR_HOME_TO_FOREIGN_BLOCK_LIST is set
+      balances_unclaimed_txs: commonBalances.unclaimedDiff,
+      balances_unclaimed_value: commonBalances.unclaimedBalance,
+
+      // ARBITRARY_MESSAGE mode
+      txs_home_out: home.toForeign,
+      txs_home_in: home.fromForeign,
+      txs_foreign_out: foreign.toHome,
+      txs_foreign_in: foreign.fromHome,
+      txs_diff_home_out_oracles: commonBalances.fromHomeToForeignDiff,
+      txs_diff_home_out_users: commonBalances.fromHomeToForeignPBUDiff,
+      txs_diff_foreign_out: commonBalances.fromForeignToHomeDiff
+    }
+
+    const blockRanges = {
+      state_startblock_home: commonBalances.startBlockHome || MONITOR_HOME_START_BLOCK,
+      state_startblock_foreign: commonBalances.startBlockForeign || MONITOR_FOREIGN_START_BLOCK,
+      state_endblock_home: commonBalances.endBlockHome,
+      state_endblock_foreign: commonBalances.endBlockForeign
+    }
+
+    Object.assign(metrics, blockRanges, balanceMetrics)
+  }
+
+  // Validator metrics
+  const validatorsFile = readFile(responsePath('validators'))
+
+  if (!hasError(validatorsFile)) {
+    for (const bridge of BRIDGE_CONFS) {
+      const allValidators = validatorsFile[bridge.type].validators
+      const validatorAddressesWithBalanceCheck =
+        typeof bridge.validatorsBalanceEnable === 'string'
+          ? bridge.validatorsBalanceEnable.split(' ')
+          : Object.keys(allValidators)
+
+      validatorAddressesWithBalanceCheck.forEach((addr, ind) => {
+        if (addr in allValidators) {
+          metrics[`validators_balances_${bridge.type}${ind}{address="${addr}"}`] = allValidators[addr].balance
+        } else {
+          logger.debug(`Nonexistent validator address ${addr}`)
+        }
+      })
+    }
+  }
+
+  // Alert metrics
+  const alertsFile = readFile(responsePath('alerts'))
+
+  if (!hasError(alertsFile)) {
+    for (const bridge of BRIDGE_CONFS) {
+      Object.entries(alertsFile[bridge.alertTargetFunc].misbehavior).forEach(([period, val]) => {
+        metrics[`misbehavior_${bridge.type}_${period}`] = val
+      })
+    }
+  }
+
+  // Failure metrics
+  const failureFile = readFile(responsePath('failures'))
+
+  if (!hasError(failureFile)) {
+    for (const bridge of BRIDGE_CONFS) {
+      const dir = bridge.failureDirection
+      const failures = failureFile[dir]
+      metrics[`failures_${dir}_total`] = failures.total
+      Object.entries(failures.stats).forEach(([period, count]) => {
+        metrics[`failures_${dir}_${period}`] = count
+      })
+    }
+  }
+
+  // Pack metrcis into a plain text
+  return Object.entries(metrics).reduceRight(
+    // Prometheus supports `Nan` and possibly signed `Infinity`
+    // in case cast to `Number` fails
+    (acc, [key, val]) => {
+      if (typeof val === 'undefined') return acc
+      else return `${key} ${Number(val)}\n${acc}`
+    },
+    ''
+  )
+}
+
+module.exports = getPrometheusMetrics
--- a/monitor/scripts/getBridgeStats.sh
+++ b/monitor/scripts/getBridgeStats.sh
@@ -2,17 +2,21 @@

 CONFIGDIR="configs"
 RESPONSESDIR="responses"
+ACLDIR="access-lists"
+ALLOWANCEFILE="allowance_list.txt"
+BLOCKFILE="block_list.txt"
+CACHEDIR="cache"
 IMAGETAG="latest"

 cd $(dirname $0)/..

 if /usr/local/bin/docker-compose ps | grep -q -i 'monitor'; then
  tstart=`date +"%s"`
-  
+
  for file in ${CONFIGDIR}/*.env
  do
    echo "${file} handling..."
-    
+
    bridgename=`source ${file} && echo ${MONITOR_BRIDGE_NAME}`
    reportdir=${RESPONSESDIR}"/"${bridgename}
    if [ ! -d ${reportdir} ]; then
@@ -26,10 +30,18 @@ if /usr/local/bin/docker-compose ps | grep -q -i 'monitor'; then
      fi
    done

+    alist=`source ${file} && echo ${MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST}`
+    blist=`source ${file} && echo ${MONITOR_HOME_TO_FOREIGN_BLOCK_LIST}`
+    al_param="$(pwd)/${ACLDIR}/${bridgename}/${ALLOWANCEFILE}:/mono/monitor/access-lists/allowance_list.txt"
+    bl_param="$(pwd)/${ACLDIR}/${bridgename}/${BLOCKFILE}:/mono/monitor/access-lists/block_list.txt"
+
    containername=${bridgename}"-checker"
    docker container stats --no-stream ${containername} 2>/dev/null 1>&2
    if [ ! "$?" == "0" ]; then
+      mkdir -p "$(pwd)/$CACHEDIR/$bridgename"
      docker run --rm --env-file $file -v $(pwd)/${RESPONSESDIR}:/mono/monitor/responses \
+        ${alist:+"-v"} ${alist:+"$al_param"} ${blist:+"-v"} ${blist:+"$bl_param"} \
+        -v $(pwd)/${CACHEDIR}/${bridgename}:/mono/monitor/cache/${bridgename} \
        --name ${containername} poanetwork/tokenbridge-monitor:${IMAGETAG} \
        /bin/bash -c 'yarn check-all'
      shasum -a 256 -s -c ${checksumfile}
@@ -46,15 +58,15 @@ if /usr/local/bin/docker-compose ps | grep -q -i 'monitor'; then
    else
      echo "${containername} have not finished yet" >&2
    fi
-    
+
    rm ${checksumfile}
    echo "========================================"
  done
-  
+
  tend=`date +"%s"`
  tdiff=`expr ${tend} - ${tstart}`
  echo "Total time to run: ${tdiff}"

 else
  echo "Monitor is not running, skipping checks."
-fi
+fi
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Alexander Kolotov	dc70247e2c	Merge the develop branch to the master branch, preparation to v2.7.0-rc1	2021-04-13 04:09:38 -06:00
Kirill Fedoseev	f95beee5dc	Add oracle service for remote shutdown (#531 )	2021-04-12 14:38:42 -06:00
Leonid Tyurin	ae83c76be9	Fix monitor metrics (#533 )	2021-04-02 03:59:49 -06:00
Kirill Fedoseev	dc3026e584	Fix undefined is not an object exception (#535 )	2021-03-26 12:16:23 -06:00
Kirill Fedoseev	b6ba0744b9	Fix ALM react subscriptions leading to duplicated RPC requests (#534 )	2021-03-18 00:04:33 -06:00
Kirill Fedoseev	4dba9a50e8	Extract tx resend intervals in env variables (#532 )	2021-03-17 21:48:40 -06:00
Kirill Fedoseev	818bc4675d	Fallback eth_getLogs to explorer API for BSC (#530 )	2021-03-14 07:39:23 -06:00
Alexander Kolotov	f93ab330cc	Merge the develop branch to the master branch, preparation to v2.7.0-rc0 (#515 ) This merge contains the following set of changes: * [Improvement] Add /metrics endpoint for prometheus support (#512) * [Improvement] Add monitor script for detecting failed AMB messages (#513) * [Improvement] Improve performance of BS requests in ALM (#516) * [Fix] Add pretty error messages for manual execution transaction reverts (#511) * [Fix] Fix resend of stuck pending transactions (#514)	2021-02-25 20:42:51 -06:00
Leonid Tyurin	f64f8b1c91	Add /metrics endpoint for prometheus support (#512 )	2021-02-25 20:39:48 -06:00
Kirill Fedoseev	9fd3f6ab82	Improve performance of BS requests in ALM (#516 )	2021-02-25 20:38:13 -06:00
Kirill Fedoseev	626f9376b2	Fix resend of stuck pending transactions (#514 )	2021-02-24 16:11:28 -06:00
Kirill Fedoseev	894134ba26	Add monitor script for detecting failed AMB messages (#513 )	2021-02-18 19:26:07 -06:00
Kirill Fedoseev	e1536755f4	Add pretty error messages for manual execution transaction reverts (#511 )	2021-02-18 19:25:01 -06:00
Alexander Kolotov	0451d6e373	Merge the develop branch to the master branch, preparation to v2.6.0	2021-01-11 20:17:53 -06:00
Kirill Fedoseev	409044b8a5	Add env variables for selective validator balance checks (#507 )	2021-01-10 20:18:06 -06:00
Kirill Fedoseev	5fc52f42d7	ALM: fix blocking Blockscout/Etherscan requests (#505 )	2021-01-07 13:35:23 -06:00
Alexander Kolotov	8a0d9f38b0	Added mediator endpoint in the monitor web service (#503 )	2020-12-24 19:15:51 +03:00
Alexander Kolotov	1aee0a84ef	Merge the develop branch to the master branch, preparation to v2.6.0-rc3	2020-12-22 10:58:25 +03:00
Alexander Kolotov	811b1a27f1	setLogger added to the RedundantHttpListProvider (#501 )	2020-12-21 22:16:37 +03:00
Kirill Fedoseev	4d468ae107	Detect all AMB mediators in monitor (#493 )	2020-12-20 01:19:49 +03:00
Kirill Fedoseev	4497a024b1	Fix RPC urls in the ultimate tests (#498 )	2020-12-20 01:15:46 +03:00
Kirill Fedoseev	6ce98ff3dd	Fetch signatures from RPC endpoint immediatly after enough signatures are collected (#499 )	2020-12-20 01:13:49 +03:00
Kirill Fedoseev	04f66b243c	Handle RPC error about ancient blocks (#500 )	2020-12-20 01:10:47 +03:00
Kirill Fedoseev	21581b3c01	Change message status when signatures are manually submitted (#497 )	2020-12-07 23:12:30 +03:00
Kirill Fedoseev	bbc68f9fa2	ALM manual signatures execution (#471 )	2020-11-26 00:22:21 +03:00
Kirill Fedoseev	5327688a20	Handle JSONRPC error codes in web3 providers (#491 )	2020-11-12 02:20:03 +03:00
Alexander Kolotov	1122daf9a1	Merge the develop branch to the master branch, preparation to v2.6.0-rc2	2020-11-08 15:35:47 +03:00
Kirill Fedoseev	12269d7426	Remove access lists tests from ultimate test suites (#488 )	2020-11-08 01:11:21 +03:00
Alexander Kolotov	683fa0728d	Update the contract's submodule to the release 5.5.0 (#486 )	2020-11-07 16:22:53 +03:00
Alexander Kolotov	dd2075c351	Security Audit report by Quantstamp added (#485 )	2020-11-07 13:15:35 +03:00
Kirill Fedoseev	ce29b95729	Support AMB manual lane and allowance/block lists in the monitor (#484 )	2020-11-04 22:16:43 +03:00
Kirill Fedoseev	eb1069497a	Cache fetched events in monitor (#482 )	2020-11-04 14:24:42 +03:00
Kirill Fedoseev	0228fc7d5f	Support of manual lane in the AMB oracle (#483 )	2020-10-31 21:02:56 +03:00
Kirill Fedoseev	f8d85b14de	Add allowance/block lists support to monitor (#477 )	2020-10-29 11:25:43 +03:00
Kirill Fedoseev	5fa9d21246	Fix set-env deprecation warnings (#478 )	2020-10-28 15:35:11 +03:00
Kirill Fedoseev	611b8c539d	Improve workflow with several RPC URLs in oracle (#476 )	2020-10-28 14:20:50 +03:00
Kirill Fedoseev	389cea3c39	Reduce time complexity of events comparison in monitor (#475 )	2020-10-23 13:48:37 +03:00
Alexander Kolotov	fbce0fc035	Merge the develop branch to the master branch, preparation to v2.6.0-rc1	2020-10-14 22:29:18 +03:00
Max Alekseenko	621b20d070	Allow cors in monitor server (#472 )	2020-10-12 21:16:41 +03:00
Alexander Kolotov	48752e8575	Remove nonce update for the re-send case (#470 )	2020-10-08 18:51:01 +03:00
Kirill Fedoseev	4efda98f2b	Do not reset nonce, if nothing was resent (#469 )	2020-10-07 15:28:57 +03:00
Kirill Fedoseev	aff8b777c5	Add requiredBlockConfirmations ABI to the NATIVE_TO_ERC_V1 bridge mode (#468 )	2020-10-06 21:35:30 +03:00
Kirill Fedoseev	74293959f3	Fixed resent job for failed transactions (#466 )	2020-10-06 15:15:35 +03:00
Kirill Fedoseev	46daeb6815	Respect requiredBlockConfirmations parameter in the monitor (#464 )	2020-10-05 15:48:36 +03:00
Alexander Kolotov	44ca0d71ce	Merge the develop branch to the master branch, preparation to v2.6.0-rc0	2020-10-02 20:34:31 +03:00
Kirill Fedoseev	fbeb878cdb	Fix insufficient funds error handler (#459 )	2020-10-02 19:46:07 +03:00
Alexander Kolotov	d17ea2ad2b	One point of handling all collected signatures requests (#457 )	2020-10-02 19:44:05 +03:00
Kirill Fedoseev	4cc87ef61a	Use totalExecutedPerDay instead of totalSpentPerDay for calculating quota (#460 )	2020-10-02 19:07:40 +03:00
Alexander Kolotov	125b66b86d	Update requirements for higher bound of gas price (#458 )	2020-10-01 10:53:11 +03:00
Alexander Kolotov	7a0ed3f699	Small update of the execution waiting status description in ALM (#456 )	2020-10-01 10:52:22 +03:00
Kirill Fedoseev	4e04f2ae1f	Update the condition for checking if a tx was stuck (#444 )	2020-09-30 19:30:51 +03:00
Kirill Fedoseev	dc377aeb9b	Possibility to allow/block specific addresses in erc-to-native mode (#442 )	2020-09-28 14:54:03 +03:00