Create Events Cache

2024-05-08 16:55:36 +00:00 · 2024-05-08 16:55:36 +00:00 · 8e84cd651c
parent c57631ebfb
commit 8e84cd651c
20 changed files with 835 additions and 125 deletions
--- a/assets/events.worker.js
+++ b/assets/events.worker.js
@ -1,18 +1,16 @@
-/* eslint-disable @typescript-eslint/no-require-imports */
+import { AES, HmacSHA256, enc } from 'crypto-js'
+import { isEmpty } from 'lodash'
+import { BigNumber, Contract } from 'ethers'
+import { poseidon } from '@tornado/circomlib'
+import { decrypt } from 'eth-sig-util'

-const { AES, HmacSHA256, enc } = require('crypto-js')
-const { isEmpty } = require('lodash')
-const { BigNumber, Contract } = require('ethers')
-const { poseidon } = require('@tornado/circomlib')
-const { decrypt } = require('eth-sig-util')
-
-const { IndexedDB } = require('./services/idb')
-const { BatchEventsService } = require('./services/batch')
-const { getAllCommitments } = require('./services/graph')
-const { ExtendedProvider } = require('./services/provider')
-const { POOL_CONTRACT, RPC_LIST, FALLBACK_RPC_LIST, workerEvents, numbers } = require('./services/constants')
-const { sleep } = require('./services/utilities')
-const { poolAbi } = require('./services/pool')
+import { IndexedDB } from './services/idb'
+import { BatchEventsService } from './services/batch'
+import { getAllCommitments } from './services/graph'
+import { ExtendedProvider } from './services/provider'
+import { POOL_CONTRACT, RPC_LIST, FALLBACK_RPC_LIST, workerEvents, numbers } from './services/constants'
+import { sleep } from './services/utilities'
+import { poolAbi } from './services/pool'

 const getProviderWithSigner = (chainId) => {
  return new ExtendedProvider(RPC_LIST[chainId], chainId, FALLBACK_RPC_LIST[chainId])
@ -103,7 +101,7 @@ const getCommitmentBatch = async ({ blockFrom, blockTo, cachedEvents, withCache
    })

    events.push(...graphEvents)
-    blockFrom = lastSyncBlock + numbers.ONE
+    blockFrom = lastSyncBlock
  }

  if (!blockTo || blockTo > blockFrom) {
--- a/assets/nullifier.worker.js
+++ b/assets/nullifier.worker.js
@ -1,14 +1,13 @@
-/* eslint-disable @typescript-eslint/no-require-imports */
-const { isEmpty } = require('lodash')
-const { BigNumber, Contract } = require('ethers')
+import { isEmpty } from 'lodash'
+import { BigNumber, Contract } from 'ethers'

-const { IndexedDB } = require('./services/idb')
-const { BatchEventsService } = require('./services/batch')
-const { getAllNullifiers } = require('./services/graph')
-const { ExtendedProvider } = require('./services/provider')
-const { POOL_CONTRACT, RPC_LIST, FALLBACK_RPC_LIST, workerEvents, numbers } = require('./services/constants')
-const { sleep } = require('./services/utilities')
-const { poolAbi } = require('./services/pool')
+import { IndexedDB } from './services/idb'
+import { BatchEventsService } from './services/batch'
+import { getAllNullifiers } from './services/graph'
+import { ExtendedProvider } from './services/provider'
+import { POOL_CONTRACT, RPC_LIST, FALLBACK_RPC_LIST, workerEvents, numbers } from './services/constants'
+import { sleep } from './services/utilities'
+import { poolAbi } from './services/pool'

 const getProviderWithSigner = (chainId) => {
  return new ExtendedProvider(RPC_LIST[chainId], chainId, FALLBACK_RPC_LIST[chainId])
@ -138,7 +137,7 @@ const getNullifiers = async (blockFrom) => {
      })

      events.push(...graphEvents)
-      blockFrom = lastSyncBlock + numbers.ONE
+      blockFrom = lastSyncBlock
    }

    let nodeEvents = await self.BatchEventsService.getBatchEvents({
--- a/assets/services/batch.js
+++ b/assets/services/batch.js
@ -1,6 +1,6 @@
-const { sleep, getBatches } = require('./utilities')
+import { sleep, getBatches } from './utilities'

-class BatchEventsService {
+export class BatchEventsService {
  constructor({
    provider,
    contract,
@ -82,6 +82,4 @@ class BatchEventsService {

    return events;
  }
-}
-
-module.exports = { BatchEventsService }
+}
--- a/assets/services/bridgeHelper.js
+++ b/assets/services/bridgeHelper.js
@ -0,0 +1,237 @@
+export const bridgeAbi = [
+  {
+    inputs: [
+      {
+        internalType: "contract IOmnibridge",
+        name: "_bridge",
+        type: "address",
+      },
+      {
+        internalType: "contract IWETH",
+        name: "_weth",
+        type: "address",
+      },
+      {
+        internalType: "address",
+        name: "_owner",
+        type: "address",
+      },
+    ],
+    stateMutability: "nonpayable",
+    type: "constructor",
+  },
+  {
+    anonymous: false,
+    inputs: [
+      {
+        indexed: true,
+        internalType: "address",
+        name: "owner",
+        type: "address",
+      },
+      {
+        indexed: false,
+        internalType: "bytes",
+        name: "key",
+        type: "bytes",
+      },
+    ],
+    name: "PublicKey",
+    type: "event",
+  },
+  {
+    inputs: [],
+    name: "WETH",
+    outputs: [
+      {
+        internalType: "contract IWETH",
+        name: "",
+        type: "address",
+      },
+    ],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "bridge",
+    outputs: [
+      {
+        internalType: "contract IOmnibridge",
+        name: "",
+        type: "address",
+      },
+    ],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [
+      {
+        internalType: "address",
+        name: "_token",
+        type: "address",
+      },
+      {
+        internalType: "address",
+        name: "_to",
+        type: "address",
+      },
+    ],
+    name: "claimTokens",
+    outputs: [],
+    stateMutability: "nonpayable",
+    type: "function",
+  },
+  {
+    inputs: [
+      {
+        internalType: "address",
+        name: "_token",
+        type: "address",
+      },
+      {
+        internalType: "uint256",
+        name: "_value",
+        type: "uint256",
+      },
+      {
+        internalType: "bytes",
+        name: "_data",
+        type: "bytes",
+      },
+    ],
+    name: "onTokenBridged",
+    outputs: [],
+    stateMutability: "nonpayable",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "owner",
+    outputs: [
+      {
+        internalType: "address",
+        name: "",
+        type: "address",
+      },
+    ],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [
+      {
+        components: [
+          {
+            internalType: "address",
+            name: "owner",
+            type: "address",
+          },
+          {
+            internalType: "bytes",
+            name: "publicKey",
+            type: "bytes",
+          },
+        ],
+        internalType: "struct L1Helper.Account",
+        name: "_account",
+        type: "tuple",
+      },
+    ],
+    name: "register",
+    outputs: [],
+    stateMutability: "nonpayable",
+    type: "function",
+  },
+  {
+    inputs: [
+      {
+        internalType: "address",
+        name: "_newOwner",
+        type: "address",
+      },
+    ],
+    name: "transferOwnership",
+    outputs: [],
+    stateMutability: "nonpayable",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "wrapAndRelayTokens",
+    outputs: [],
+    stateMutability: "payable",
+    type: "function",
+  },
+  {
+    inputs: [
+      {
+        internalType: "address",
+        name: "_receiver",
+        type: "address",
+      },
+      {
+        internalType: "bytes",
+        name: "_data",
+        type: "bytes",
+      },
+    ],
+    name: "wrapAndRelayTokens",
+    outputs: [],
+    stateMutability: "payable",
+    type: "function",
+  },
+  {
+    inputs: [
+      {
+        internalType: "address",
+        name: "_receiver",
+        type: "address",
+      },
+      {
+        internalType: "bytes",
+        name: "_data",
+        type: "bytes",
+      },
+      {
+        components: [
+          {
+            internalType: "address",
+            name: "owner",
+            type: "address",
+          },
+          {
+            internalType: "bytes",
+            name: "publicKey",
+            type: "bytes",
+          },
+        ],
+        internalType: "struct L1Helper.Account",
+        name: "_account",
+        type: "tuple",
+      },
+    ],
+    name: "wrapAndRelayTokens",
+    outputs: [],
+    stateMutability: "payable",
+    type: "function",
+  },
+  {
+    inputs: [
+      {
+        internalType: "address",
+        name: "_receiver",
+        type: "address",
+      },
+    ],
+    name: "wrapAndRelayTokens",
+    outputs: [],
+    stateMutability: "payable",
+    type: "function",
+  },
+  {
+    stateMutability: "payable",
+    type: "receive",
+  },
+]
--- a/assets/services/constants.js
+++ b/assets/services/constants.js
@ -1,40 +1,40 @@
-const BSC_CHAIN_ID = 56
-const XDAI_CHAIN_ID = 100
-const MAINNET_CHAIN_ID = 1
+export const BSC_CHAIN_ID = 56
+export const XDAI_CHAIN_ID = 100
+export const MAINNET_CHAIN_ID = 1

-const ChainId = {
+export const ChainId = {
  BSC: BSC_CHAIN_ID,
  XDAI: XDAI_CHAIN_ID,
  MAINNET: MAINNET_CHAIN_ID,
 }

-const OFFCHAIN_ORACLE_CONTRACT = '0x07D91f5fb9Bf7798734C3f606dB065549F6893bb'
+export const OFFCHAIN_ORACLE_CONTRACT = '0x07D91f5fb9Bf7798734C3f606dB065549F6893bb'

-const POOL_CONTRACT = {
+export const POOL_CONTRACT = {
  [ChainId.XDAI]: '0xD692Fd2D0b2Fbd2e52CFa5B5b9424bC981C30696', // ETH
  // [ChainId.XDAI]: '0x772F007F13604ac286312C85b9Cd9B2D691B353E', // BNB
 }
-const REDGISTRY_CONTRACT = {
+export const REDGISTRY_CONTRACT = {
  [ChainId.MAINNET]: '0x58E8dCC13BE9780fC42E8723D8EaD4CF46943dF2',
 }

-const AGGREGATOR_FACTORY = {
+export const AGGREGATOR_FACTORY = {
  [ChainId.MAINNET]: '0xE8F47A78A6D52D317D0D2FFFac56739fE14D1b49',
 }

-const WRAPPED_TOKEN = {
+export const WRAPPED_TOKEN = {
  [ChainId.MAINNET]: '0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2', // WETH on mainnet
  [ChainId.XDAI]: '0x6A023CCd1ff6F2045C3309768eAd9E68F978f6e1', // WETH on xdai
  [ChainId.BSC]: '0xCa8d20f3e0144a72C6B5d576e9Bd3Fd8557E2B04', // WBNB on xdai
 }

-const RPC_LIST = {
+export const RPC_LIST = {
  [ChainId.BSC]: 'https://tornadocash-rpc.com/bsc',
  [ChainId.MAINNET]: 'https://tornadocash-rpc.com/mainnet',
  [ChainId.XDAI]: 'https://tornadocash-rpc.com/gnosis',
 }

-const FALLBACK_RPC_LIST = {
+export const FALLBACK_RPC_LIST = {
  [ChainId.BSC]: [
    'https://binance.nodereal.io',
    // 'https://rpc.ankr.com/bsc/dbe08b852ba176a8aeac783cc1fa8becaf4f107235dfdae79241063fbf52ca4a',
@ -49,52 +49,98 @@ const FALLBACK_RPC_LIST = {
  ],
 }

-const RPC_WS_LIST = {
+export const RPC_WS_LIST = {
  [ChainId.MAINNET]: 'wss://mainnet.chainnodes.org/d692ae63-0a7e-43e0-9da9-fe4f4cc6c607',
  [ChainId.BSC]: 'wss://bsc-mainnet.chainnodes.org/d692ae63-0a7e-43e0-9da9-fe4f4cc6c607',
  [ChainId.XDAI]: 'wss://gnosis-mainnet.chainnodes.org/d692ae63-0a7e-43e0-9da9-fe4f4cc6c607',
 }

-const MULTICALL = {
+export const MULTICALL = {
  [ChainId.BSC]: '0xf072f255A3324198C7F653237B44E1C4e66f8C42',
  [ChainId.XDAI]: '0x8677b93D543d0217B32B8FDc20F2316E138D619B',
  [ChainId.MAINNET]: '0x1F98415757620B543A52E61c46B32eB19261F984',
 }

-const BRIDGE_PROXY = {
+export const BRIDGE_PROXY = {
  [ChainId.BSC]: '0x05185872898b6f94AA600177EF41B9334B1FA48B',
  [ChainId.MAINNET]: '0x4c36d2919e407f0cc2ee3c993ccf8ac26d9ce64e',
 }

-const AMB_BRIDGE = {
+export const AMB_BRIDGE = {
  [ChainId.XDAI]: '0x75Df5AF045d91108662D8080fD1FEFAd6aA0bb59', // ETH
  // [ChainId.XDAI]: '0x162E898bD0aacB578C8D5F8d6ca588c13d2A383F', // BNB
  [ChainId.MAINNET]: '0x162E898bD0aacB578C8D5F8d6ca588c13d2A383F',
 }

-const BRIDGE_HELPER = {
+export const BRIDGE_HELPER = {
  [ChainId.MAINNET]: '0xCa0840578f57fE71599D29375e16783424023357',
  [ChainId.BSC]: '0x8845F740F8B01bC7D9A4C82a6fD4A60320c07AF1',
 }

-const BRIDGE_FEE_MANAGER = {
+export const BRIDGE_FEE_MANAGER = {
  [ChainId.XDAI]: '0x5dbC897aEf6B18394D845A922BF107FA98E3AC55',
 }

-const FOREIGN_OMNIBRIDGE = {
+export const FOREIGN_OMNIBRIDGE = {
  [ChainId.MAINNET]: '0x88ad09518695c6c3712AC10a214bE5109a655671',
 }

-const OMNIBRIDGE = {
+export const OMNIBRIDGE = {
  [ChainId.XDAI]: '0xf6A78083ca3e2a662D6dd1703c939c8aCE2e268d',
 }

-const SANCTION_LIST = {
+export const SANCTION_LIST = {
  [ChainId.MAINNET]: '0x40C57923924B5c5c5455c48D93317139ADDaC8fb',
 }

+export const CHAINS = {
+  [ChainId.XDAI]: {
+    symbol: 'XDAI',
+    name: 'xdai',
+    shortName: 'xdai',
+    icon: 'ethereum',
+    network: 'XDAI',
+    blockDuration: 3000, // ms
+    deployBlock: 19097755, // ETH
+    // deployBlock: 20446605, // BNB
+    blockGasLimit: 144000000, // rpc block gas limit
+    hexChainId: '0x64',
+    isEipSupported: false,
+    ensSubdomainKey: 'gnosis-nova',
+    blockExplorerUrl: 'https://gnosisscan.io'
+  },
+  [ChainId.MAINNET]: {
+    symbol: 'ETH',
+    name: 'ethereum',
+    shortName: 'eth',
+    icon: 'ethereum',
+    network: 'Mainnet',
+    deployBlock: 13494216,
+    blockDuration: 15000,
+    blockGasLimit: 144000000,
+    hexChainId: '0x1',
+    isEipSupported: true,
+    ensSubdomainKey: 'mainnet-tornado',
+    blockExplorerUrl: 'https://etherscan.io'
+  },
+  [ChainId.BSC]: {
+    symbol: 'BNB',
+    name: 'bsc',
+    shortName: 'bsc',
+    icon: 'binance',
+    network: 'BSC',
+    deployBlock: 14931075,
+    blockDuration: 3000,
+    blockGasLimit: 144000000,
+    hexChainId: '0x38',
+    isEipSupported: false,
+    ensSubdomainKey: 'bsc-tornado',
+    blockExplorerUrl: 'https://bscscan.com'
+  },
+}

-const workerEvents = {
+
+export const workerEvents = {
  INIT_WORKER: 'initWorker',
  GET_COMMITMENT_EVENTS: 'get_commitment_events',
  // nullifier
@ -112,7 +158,7 @@ const workerEvents = {
  SAVE_LAST_SYNC_BLOCK: 'save_last_sync_block',
 }

-const numbers = {
+export const numbers = {
  ZERO: 0,
  TWO: 2,
  ONE: 1,
@ -128,13 +174,4 @@ const numbers = {
  DECRYPT_WORKERS_COUNT: 8,
  MIN_BLOCKS_INTERVAL_LINE: 200000,
  EPHEM_PUBLIC_KEY_BUF_LENGTH: 56,
-}
-
-module.exports = {
-  ChainId,
-  POOL_CONTRACT,
-  RPC_LIST,
-  FALLBACK_RPC_LIST,
-  workerEvents,
-  numbers
-}
+}
--- a/assets/services/graph/index.js
+++ b/assets/services/graph/index.js
@ -1,8 +1,11 @@
-const { isEmpty } = require('lodash')
-const { ApolloClient, InMemoryCache, gql } = require('@apollo/client/core')
+import { isEmpty } from 'lodash'
+import { ApolloClient, InMemoryCache, gql } from '@apollo/client/core'
+import { utils } from 'ethers'

-const { GET_COMMITMENT, GET_NULLIFIER } = require('./queries')
-const { ChainId, numbers } = require('../constants')
+import { GET_ACCOUNTS, GET_COMMITMENT, GET_NULLIFIER } from './queries'
+import { ChainId, numbers } from '../constants'
+
+const { getAddress } = utils

 const first = 1000
 const breakLength = 900
@ -23,7 +26,91 @@ const client = new ApolloClient({
  cache: new InMemoryCache(),
 })

-async function getCommitments({ fromBlock, chainId }) {
+export async function getAccounts({ fromBlock, chainId }) {
+  const { data } = await client.query({
+    context: {
+      chainId,
+    },
+    query: gql(GET_ACCOUNTS),
+    variables: { first, fromBlock },
+  })
+
+  if (!data) {
+    return {
+      results: [],
+      lastSyncBlock: data._meta.block.number
+    }
+  }
+
+  return {
+    results: data.accounts,
+    lastSyncBlock: data._meta.block.number
+  }
+}
+
+export async function getAllAccounts({ fromBlock, toBlock, chainId }) {
+  try {
+    let accounts = []
+    let lastSyncBlock
+
+    while (true) {
+      let { results, lastSyncBlock: lastBlock } = await getAccounts({ fromBlock, chainId })
+
+      lastSyncBlock = lastBlock
+
+      if (isEmpty(results)) {
+        break
+      }
+
+      if (results.length < breakLength) {
+        accounts = accounts.concat(results)
+        break
+      }
+
+      const [lastEvent] = results.slice(-numbers.ONE)
+
+      results = results.filter((e) => e.blockNumber !== lastEvent.blockNumber)
+      fromBlock = Number(lastEvent.blockNumber)
+
+      accounts = accounts.concat(results)
+
+      if (toBlock && fromBlock >= Number(toBlock)) {
+        break
+      }
+    }
+
+    if (!accounts) {
+      return {
+        lastSyncBlock,
+        events: [],
+      }
+    }
+
+    const data = accounts.map((e) => ({
+      key: e.key,
+      owner: getAddress(e.owner),
+      blockNumber: Number(e.blockNumber),
+    }))
+
+    const [lastEvent] = data.slice(-numbers.ONE)
+
+    return {
+      events: data,
+      lastSyncBlock: (lastEvent && lastEvent.blockNumber >= lastSyncBlock)
+        ? lastEvent.blockNumber + numbers.ONE
+        : lastSyncBlock,
+    }
+  } catch (err) {
+    console.log('Error from getAllAccounts')
+    console.log(err)
+    return {
+      lastSyncBlock: '',
+      events: [],
+    }
+  }
+}
+
+export async function getCommitments({ fromBlock, chainId }) {
  const { data } = await client.query({
    context: {
      chainId,
@ -45,7 +132,7 @@ async function getCommitments({ fromBlock, chainId }) {
  }
 }

-async function getAllCommitments({ fromBlock, toBlock, chainId }) {
+export async function getAllCommitments({ fromBlock, toBlock, chainId }) {
  try {
    let commitments = []
    let lastSyncBlock
@ -83,19 +170,21 @@ async function getAllCommitments({ fromBlock, toBlock, chainId }) {
      }
    }

-    const data = commitments.map((e) => ({
-      index: Number(e.index),
-      commitment: e.commitment,
-      blockNumber: Number(e.blockNumber),
-      encryptedOutput: e.encryptedOutput,
-      transactionHash: e.transactionHash
-    }))
+    const data = commitments
+      .map((e) => ({
+        blockNumber: Number(e.blockNumber),
+        transactionHash: e.transactionHash,
+        index: Number(e.index),
+        commitment: e.commitment,
+        encryptedOutput: e.encryptedOutput
+      }))
+      .sort((a, b) => a.index - b.index)

    const [lastEvent] = data.slice(-numbers.ONE)

    return {
      events: data,
-      lastSyncBlock: (lastEvent && lastEvent.blockNumber > lastSyncBlock)
+      lastSyncBlock: (lastEvent && lastEvent.blockNumber >= lastSyncBlock)
        ? lastEvent.blockNumber + numbers.ONE
        : lastSyncBlock,
    }
@ -109,7 +198,7 @@ async function getAllCommitments({ fromBlock, toBlock, chainId }) {
  }
 }

-async function getNullifiers({ fromBlock, chainId }) {
+export async function getNullifiers({ fromBlock, chainId }) {
  const { data } = await client.query({
    context: {
      chainId,
@ -131,7 +220,7 @@ async function getNullifiers({ fromBlock, chainId }) {
  }
 }

-async function getAllNullifiers({ fromBlock, chainId }) {
+export async function getAllNullifiers({ fromBlock, chainId }) {
  try {
    let nullifiers = []
    let lastSyncBlock
@ -175,7 +264,7 @@ async function getAllNullifiers({ fromBlock, chainId }) {

    return {
      events: data,
-      lastSyncBlock: (lastEvent && lastEvent.blockNumber > lastSyncBlock)
+      lastSyncBlock: (lastEvent && lastEvent.blockNumber >= lastSyncBlock)
        ? lastEvent.blockNumber + numbers.ONE
        : lastSyncBlock,
    }
@ -187,9 +276,4 @@ async function getAllNullifiers({ fromBlock, chainId }) {
      events: [],
    }
  }
-}
-
-module.exports = {
-  getAllCommitments,
-  getAllNullifiers
 }
--- a/assets/services/graph/queries.js
+++ b/assets/services/graph/queries.js
@ -1,4 +1,23 @@
-const GET_COMMITMENT = `
+export const GET_ACCOUNTS = `
+  query getAccounts($first: Int, $fromBlock: Int) {
+    accounts(first: $first, orderBy: blockNumber, orderDirection: asc, where: {
+      blockNumber_gte: $fromBlock
+    }) {
+      id
+      key
+      owner
+      blockNumber
+    }
+    _meta {
+      block {
+        number
+      }
+      hasIndexingErrors
+    }
+  }
+`
+
+export const GET_COMMITMENT = `
  query getCommitment($first: Int, $fromBlock: Int) {
    commitments(first: $first, orderBy: blockNumber, orderDirection: asc, where: {
      blockNumber_gte: $fromBlock
@ -18,7 +37,7 @@ const GET_COMMITMENT = `
  }
 `

-const GET_NULLIFIER = `
+export const GET_NULLIFIER = `
  query getNullifier($first: Int, $fromBlock: Int) {
    nullifiers(first: $first, orderBy: blockNumber, orderDirection: asc, where: {
      blockNumber_gte: $fromBlock
@ -34,6 +53,4 @@ const GET_NULLIFIER = `
      hasIndexingErrors
    }
  }
-`
-
-module.exports = { GET_COMMITMENT, GET_NULLIFIER }
+`
--- a/assets/services/idb.js
+++ b/assets/services/idb.js
@ -1,12 +1,12 @@
-const { deleteDB, openDB } = require('idb')
+import { deleteDB, openDB } from 'idb'

-const VERSION_ERROR = 'less than the existing version'
-const INDEX_DB_ERROR = 'A mutation operation was attempted on a database that did not allow mutations.'
+export const VERSION_ERROR = 'less than the existing version'
+export const INDEX_DB_ERROR = 'A mutation operation was attempted on a database that did not allow mutations.'

-const IDB_VERSION = 9
+export const IDB_VERSION = 9

 // TODO method for migration, remove indexed
-class IndexedDB {
+export class IndexedDB {
  constructor({ stores, dbName }) {
    this.dbExists = false
    this.isBlocked = false
@ -220,5 +220,3 @@ class IndexedDB {
    }
  }
 }
-
-module.exports = { IndexedDB }
--- a/assets/services/pool.js
+++ b/assets/services/pool.js
@ -1,4 +1,4 @@
-const poolAbi = [
+export const poolAbi = [
  {
    inputs: [
      {
@ -1037,6 +1037,4 @@ const poolAbi = [
    stateMutability: "pure",
    type: "function",
  },
-]
-
-module.exports = { poolAbi }
+]
--- a/assets/services/provider.js
+++ b/assets/services/provider.js
@ -1,10 +1,10 @@
-const { ethers } = require('ethers')
-const { fetchJson } = require('@ethersproject/web')
-const { numbers } = require('./constants')
+import { ethers } from 'ethers'
+import { fetchJson } from 'ethers/lib/utils'
+import { numbers } from './constants'

 const defaultRetryAttempt = 0

-class ExtendedProvider extends ethers.providers.StaticJsonRpcProvider {
+export class ExtendedProvider extends ethers.providers.StaticJsonRpcProvider {
  constructor(url, network, fallbackRpcs) {
    super(url, network)
    this.fallbackRpcs = fallbackRpcs
@ -83,6 +83,4 @@ class ExtendedProvider extends ethers.providers.StaticJsonRpcProvider {

  //   return (data?.includes(ERROR_DATA) || message?.includes(ERROR_MESSAGE)) && code === ERROR_CODE
  // }
-}
-
-module.exports = { ExtendedProvider }
+}
--- a/assets/services/utilities.js
+++ b/assets/services/utilities.js
@ -1,6 +1,6 @@
-const ZERO_ELEMENT = 0
+export const ZERO_ELEMENT = 0

-function getBatches(array, batchSize) {
+export function getBatches(array, batchSize) {
  const batches = []
  while (array.length) {
    batches.push(array.splice(ZERO_ELEMENT, batchSize))
@ -8,12 +8,6 @@ function getBatches(array, batchSize) {
  return batches
 }

-async function sleep(ms) {
+export async function sleep(ms) {
  return await new Promise((resolve) => setTimeout(resolve, ms))
-}
-
-module.exports = {
-  ZERO_ELEMENT,
-  getBatches,
-  sleep
 }
--- a/assets/services/zip.js
+++ b/assets/services/zip.js
@ -0,0 +1,25 @@
+import { zip, unzip } from 'fflate'
+
+export function zipAsync(file) {
+  return new Promise((res, rej) => {
+    zip(file, { mtime: new Date('1/1/1980') }, (err, data) => {
+      if (err) {
+        rej(err);
+        return;
+      }
+      res(data);
+    });
+  });
+}
+
+export function unzipAsync(data) {
+  return new Promise((res, rej) => {
+    unzip(data, {}, (err, data) => {
+      if (err) {
+        rej(err);
+        return;
+      }
+      res(data);
+    });
+  });
+}
--- a/assets/syncEvents.js
+++ b/assets/syncEvents.js
@ -0,0 +1,285 @@
+import path from 'path'
+import { stat, readFile, writeFile } from 'fs/promises'
+import { Contract, providers, utils } from 'ethers'
+
+import { BatchEventsService } from './services/batch'
+import { getAllAccounts, getAllCommitments, getAllNullifiers } from './services/graph'
+import { POOL_CONTRACT, BRIDGE_HELPER, RPC_LIST, ChainId, CHAINS, numbers } from './services/constants'
+import { zipAsync, unzipAsync } from './services/zip'
+import { poolAbi } from './services/pool'
+import { bridgeAbi } from './services/bridgeHelper'
+
+const { getAddress } = utils
+const { StaticJsonRpcProvider } = providers
+
+const EVENT_PATH = './static'
+
+async function existsAsync(fileOrDir) {
+  try {
+    await stat(fileOrDir);
+
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+const getProvider = (chainId) => {
+  return new StaticJsonRpcProvider({ skipFetchSetup: true, url: RPC_LIST[chainId] }, chainId)
+}
+
+const getTornadoPool = (chainId, provider) => {
+  const TornadoPool = new Contract(POOL_CONTRACT[chainId], poolAbi, provider)
+
+  return {
+    TornadoPool,
+    BatchEventsService: new BatchEventsService({
+      provider,
+      contract: TornadoPool
+    })
+  }
+}
+
+const getBridgeHelper = (chainId, provider) => {
+  const BridgeHelper = new Contract(BRIDGE_HELPER[chainId], bridgeAbi, provider)
+
+  return {
+    BridgeHelper,
+    BridgeEventsService: new BatchEventsService({
+      provider,
+      contract: BridgeHelper
+    })
+  }
+}
+
+const loadEvents = async (fileName, deployedBlock) => {
+  fileName = fileName.toLowerCase()
+
+  const filePath = path.join(EVENT_PATH, fileName + '.zip')
+
+  if (!(await existsAsync(filePath))) {
+    return {
+      events: [],
+      lastBlock: deployedBlock
+    }
+  }
+
+  try {
+    const data = await readFile(filePath)
+    const { [fileName]: content } = await unzipAsync(data)
+
+    const events = JSON.parse(new TextDecoder().decode(content))
+
+    const lastBlock = events && Array.isArray(events) && events[events.length - 1]
+      ? events[events.length - 1].blockNumber
+      :  deployedBlock
+
+    return {
+      events,
+      lastBlock
+    }
+  } catch {
+    return {
+      events: [],
+      lastBlock: deployedBlock
+    }
+  }
+}
+
+const saveEvents = async (fileName, events) => {
+  fileName = fileName.toLowerCase()
+
+  const filePath = path.join(EVENT_PATH, fileName + '.zip')
+
+  const payload = await zipAsync({
+    [fileName]: new TextEncoder().encode(JSON.stringify(events, null, 2) + '\n')
+  })
+
+  await writeFile(filePath, payload)
+}
+
+const syncAccounts = async (chainId, BatchEventsService) => {
+  const fileName = `accounts_${chainId}.json`
+
+  console.log(`Syncing ${fileName}`)
+
+  const cachedEvents = await loadEvents(fileName, CHAINS[chainId].deployBlock) 
+
+  const events = [...cachedEvents.events]
+  let fromBlock = cachedEvents.lastBlock + numbers.ONE
+
+  console.log({
+    cachedEvents: events.length,
+    cachedBlock: fromBlock
+  })
+
+  const { events: graphEvents, lastSyncBlock } = await getAllAccounts({
+    fromBlock,
+    chainId
+  })
+
+  console.log({
+    graphEvents: graphEvents.length,
+    graphBlock: lastSyncBlock
+  })
+
+  if (lastSyncBlock) {
+    events.push(...graphEvents)
+    fromBlock = lastSyncBlock
+  }
+
+  let nodeEvents = await BatchEventsService.getBatchEvents({
+    fromBlock,
+    type: 'PublicKey'
+  })
+
+  console.log({
+    nodeEvents: nodeEvents.length,
+    nodeBlock: nodeEvents && nodeEvents[nodeEvents.length - 1] ? nodeEvents[nodeEvents.length - 1].blockNumber : undefined
+  })
+
+  if (nodeEvents && nodeEvents.length) {
+    nodeEvents = nodeEvents.map(({ blockNumber, args }) => ({
+      key: args.key,
+      owner: getAddress(args.owner),
+      blockNumber,
+    }))
+
+    events.push(...nodeEvents)
+  }
+
+  await saveEvents(fileName, events)
+}
+
+const syncCommitments = async (chainId, BatchEventsService) => {
+  const fileName = `commitments_${chainId}.json`
+
+  console.log(`Syncing ${fileName}`)
+
+  const cachedEvents = await loadEvents(fileName, CHAINS[chainId].deployBlock) 
+
+  const events = [...cachedEvents.events]
+  let fromBlock = cachedEvents.lastBlock + numbers.ONE
+
+  console.log({
+    cachedEvents: events.length,
+    cachedBlock: fromBlock
+  })
+
+  const { events: graphEvents, lastSyncBlock } = await getAllCommitments({
+    fromBlock,
+    chainId
+  })
+
+  console.log({
+    graphEvents: graphEvents.length,
+    graphBlock: lastSyncBlock
+  })
+
+  if (lastSyncBlock) {
+    events.push(...graphEvents)
+    fromBlock = lastSyncBlock
+  }
+
+  let nodeEvents = await BatchEventsService.getBatchEvents({
+    fromBlock,
+    type: 'NewCommitment'
+  })
+
+  console.log({
+    nodeEvents: nodeEvents.length,
+    nodeBlock: nodeEvents && nodeEvents[nodeEvents.length - 1] ? nodeEvents[nodeEvents.length - 1].blockNumber : undefined
+  })
+
+  if (nodeEvents && nodeEvents.length) {
+    nodeEvents = nodeEvents.map(({ blockNumber, transactionHash, args }) => ({
+      blockNumber,
+      transactionHash,
+      index: Number(args.index),
+      commitment: args.commitment,
+      encryptedOutput: args.encryptedOutput,
+    }))
+
+    events.push(...nodeEvents)
+  }
+
+  await saveEvents(fileName, events)
+}
+
+const syncNullifiers = async (chainId, BatchEventsService) => {
+  const fileName = `nullifiers_${chainId}.json`
+
+  console.log(`Syncing ${fileName}`)
+
+  const cachedEvents = await loadEvents(fileName, CHAINS[chainId].deployBlock) 
+
+  const events = [...cachedEvents.events]
+  let fromBlock = cachedEvents.lastBlock + numbers.ONE
+
+  console.log({
+    cachedEvents: events.length,
+    cachedBlock: fromBlock
+  })
+
+  const { events: graphEvents, lastSyncBlock } = await getAllNullifiers({
+    fromBlock,
+    chainId
+  })
+
+  console.log({
+    graphEvents: graphEvents.length,
+    graphBlock: lastSyncBlock
+  })
+
+  if (lastSyncBlock) {
+    events.push(...graphEvents)
+    fromBlock = lastSyncBlock
+  }
+
+  let nodeEvents = await BatchEventsService.getBatchEvents({
+    fromBlock,
+    type: 'NewNullifier'
+  })
+
+  console.log({
+    nodeEvents: nodeEvents.length,
+    nodeBlock: nodeEvents && nodeEvents[nodeEvents.length - 1] ? nodeEvents[nodeEvents.length - 1].blockNumber : undefined
+  })
+
+  if (nodeEvents && nodeEvents.length) {
+    nodeEvents = nodeEvents.map(({ blockNumber, transactionHash, args }) => ({
+      blockNumber,
+      transactionHash,
+      nullifier: args.nullifier,
+    }))
+
+    events.push(...nodeEvents)
+  }
+
+  await saveEvents(fileName, events)
+}
+
+const main = async () => {
+  const chainId = ChainId.XDAI
+
+  const ethChainId = ChainId.MAINNET
+
+  const provider = getProvider(chainId)
+
+  const ethProvider = getProvider(ethChainId)
+  
+  const { BatchEventsService } = getTornadoPool(chainId, provider)
+
+  const { BridgeEventsService } = getBridgeHelper(ethChainId, ethProvider)
+
+  console.log(`Connected with ${chainId}: (block: ${await provider.getBlockNumber()})`)
+
+  console.log(`Connected with ${ethChainId}: (block: ${await ethProvider.getBlockNumber()})`)
+
+  await syncAccounts(ethChainId, BridgeEventsService)
+
+  await syncCommitments(chainId, BatchEventsService)
+
+  await syncNullifiers(chainId, BatchEventsService)
+}
+main()
--- a/package.json
+++ b/package.json
@ -14,7 +14,8 @@
    "generate": "yarn worker:compile && nuxt generate && yarn copyFile dist/404.html dist/ipfs-404.html",
    "prepare": "husky install",
    "ipfs:upload": "node --loader ts-node/esm ipfsUpload.ts",
-    "worker:compile": "webpack"
+    "worker:compile": "webpack",
+    "update:events": "webpack && node ./syncEvents.cjs"
  },
  "dependencies": {
    "@apollo/client": "^3.4.16",
@ -73,6 +74,7 @@
    "eslint-plugin-prettier": "^3.4.0",
    "eslint-plugin-promise": "^5.1.0",
    "eslint-plugin-vue": "^7.16.0",
+    "fflate": "^0.8.2",
    "form-data": "^4.0.0",
    "husky": "^6.0.0",
    "lint-staged": "10.2.11",
--- a/services/graph/index.ts
+++ b/services/graph/index.ts
@ -231,13 +231,15 @@ export async function getAllCommitments({ fromBlock, chainId }: Params) {
      }
    }

-    const data = commitments.map((e) => ({
-      index: Number(e.index),
-      commitment: e.commitment,
-      blockNumber: Number(e.blockNumber),
-      encryptedOutput: e.encryptedOutput,
-      transactionHash: e.transactionHash
-    }))
+    const data = commitments
+      .map((e) => ({
+        index: Number(e.index),
+        commitment: e.commitment,
+        blockNumber: Number(e.blockNumber),
+        encryptedOutput: e.encryptedOutput,
+        transactionHash: e.transactionHash
+      }))
+      .sort((a, b) => a.index - b.index)

    const [lastEvent] = data.slice(-numbers.ONE)

--- a/static/accounts_1.json.zip
+++ b/static/accounts_1.json.zip
--- a/static/commitments_100.json.zip
+++ b/static/commitments_100.json.zip
--- a/static/nullifiers_100.json.zip
+++ b/static/nullifiers_100.json.zip
--- a/webpack.config.js
+++ b/webpack.config.js
@ -1,4 +1,5 @@
 import path from 'path'
+import webpack from 'webpack'

 export default [
  {
@ -16,5 +17,37 @@ export default [
      path: path.resolve('static'),
      filename: 'nullifier.worker.js',
    }
+  },
+  {
+    mode: 'production',
+    entry: './assets/syncEvents.js',
+    output: {
+      path: path.resolve('.'),
+      filename: 'syncEvents.cjs',
+    },
+    target: 'node',
+    plugins: [
+      new webpack.BannerPlugin({
+        banner: '#!/usr/bin/env node\n',
+        raw: true
+      })
+    ],
+    module: {
+      rules: [
+        {
+          test: /\.mjs$/,
+          include: /node_modules/,
+          type: 'javascript/auto'
+        }
+      ]
+    },
+    resolve: {
+      alias: {
+        'fflate': 'fflate/esm'
+      }
+    },
+    optimization: {
+      minimize: false,
+    }
  }
 ]
--- a/yarn.lock
+++ b/yarn.lock
@ -6322,6 +6322,11 @@ ffjavascript@^0.2.48:
    wasmcurves "0.2.2"
    web-worker "^1.2.0"

+fflate@^0.8.2:
+  version "0.8.2"
+  resolved "https://registry.yarnpkg.com/fflate/-/fflate-0.8.2.tgz#fc8631f5347812ad6028bbe4a2308b2792aa1dea"
+  integrity sha512-cPJU47OaAoCbg0pBvzsgpTPhmhqI5eJjh/JIu8tPj5q+T7iLvW/JAYUqmE7KOB4R1ZyEhzBaIQpQpardBF5z8A==
+
 ffwasm@0.0.7:
  version "0.0.7"
  resolved "https://registry.yarnpkg.com/ffwasm/-/ffwasm-0.0.7.tgz#23bb9a3537ecc87c0f24fcfb3a9ddd0e86855fff"