initialise

This commit is contained in:
gozzy 2022-09-02 18:39:28 +00:00
commit 9ceb004676
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19
Dockerfile Normal file

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FROM node:14
WORKDIR /app
RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
ENV PATH="/root/.cargo/bin:${PATH}"
RUN cargo install zkutil
COPY --from=tornadocash/tornado-trees \
/app/artifacts/circuits/BatchTreeUpdate.params \
/app/artifacts/circuits/BatchTreeUpdate \
/app/artifacts/circuits/BatchTreeUpdate.dat \
/app/artifacts/circuits/BatchTreeUpdate.r1cs \
./snarks/
COPY package.json yarn.lock ./
RUN yarn && yarn cache clean --force
COPY . .
CMD ["yarn", "start"]

22
LICENSE Normal file

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The MIT License (MIT)
Copyright (c) 2018 Truffle
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

31
README.md Normal file

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# Root updater [![Build Status](https://github.com/tornadocash/tornado-root-updater/workflows/build/badge.svg)](https://github.com/tornadocash/tornado-root-updater/actions) [![Docker Image Version (latest semver)](https://img.shields.io/docker/v/tornadocash/tornado-root-updater?logo=docker&logoColor=%23FFFFFF&sort=semver)](https://hub.docker.com/repository/docker/tornadocash/tornado-root-updater)
For Tornado Cash to enable mining, it needs more metadata than is currently available: it needs to know the block number for each Tornado Cash deposit and withdrawal. Since the current version of Tornado cash is immutable the mining system uses a special proxy to collect this data. When users make deposits and withdrawal all necessary data is recorded to the [proxy](https://github.com/tornadocash/tornado-anonymity-mining/blob/master/contracts/TornadoProxy.sol) contract. In order to be used in zkSnark proof, this data should be added to the special Merkle trees (deposits Merkle tree and withdrawals Merkle tree). So long as someone out there does this, the system works smoothly and trustlessly.
This software helps to upload deposit and withdrawal metadata from Tornado Cash anonymity mining [proxy](https://github.com/tornadocash/tornado-anonymity-mining/blob/master/contracts/TornadoProxy.sol) into the [TornadoTrees](https://github.com/tornadocash/tornado-anonymity-mining/blob/master/contracts/TornadoTrees.sol) contract that handles the Merkle trees.
Keep in mind, it could cost some ether to do so.
## Usage with docker
```shell script
wget https://raw.githubusercontent.com/tornadocash/tornado-root-updater/master/docker-compose.yml
wget https://raw.githubusercontent.com/tornadocash/tornado-root-updater/master/.env.example -O .env
vi .env # update env vars
docker-compose up -d
```
## Usage for development
```shell script
brew install redis
redis-server
yarn
cp .env.example .env
vi .env
# download and unzip snark keys from https://tornado-trees-circuit.s3-eu-west-1.amazonaws.com/tornado-trees-circuit.tar.gz to `snarks` directory
yarn start
```
Caches events from both mining and tornado cash instances

702
abi/tornadoTrees.json Normal file

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[
{
"inputs": [
{
"internalType": "address",
"name": "_governance",
"type": "address"
},
{
"internalType": "contract ITornadoTreesV1",
"name": "_tornadoTreesV1",
"type": "address"
},
{
"components": [
{
"internalType": "uint256",
"name": "depositsFrom",
"type": "uint256"
},
{
"internalType": "uint256",
"name": "depositsStep",
"type": "uint256"
},
{
"internalType": "uint256",
"name": "withdrawalsFrom",
"type": "uint256"
},
{
"internalType": "uint256",
"name": "withdrawalsStep",
"type": "uint256"
}
],
"internalType": "struct TornadoTrees.SearchParams",
"name": "_searchParams",
"type": "tuple"
}
],
"stateMutability": "nonpayable",
"type": "constructor"
},
{
"anonymous": false,
"inputs": [
{
"indexed": false,
"internalType": "address",
"name": "instance",
"type": "address"
},
{
"indexed": true,
"internalType": "bytes32",
"name": "hash",
"type": "bytes32"
},
{
"indexed": false,
"internalType": "uint256",
"name": "block",
"type": "uint256"
},
{
"indexed": false,
"internalType": "uint256",
"name": "index",
"type": "uint256"
}
],
"name": "DepositData",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": false,
"internalType": "address",
"name": "instance",
"type": "address"
},
{
"indexed": true,
"internalType": "bytes32",
"name": "hash",
"type": "bytes32"
},
{
"indexed": false,
"internalType": "uint256",
"name": "block",
"type": "uint256"
},
{
"indexed": false,
"internalType": "uint256",
"name": "index",
"type": "uint256"
}
],
"name": "WithdrawalData",
"type": "event"
},
{
"inputs": [],
"name": "BYTES_SIZE",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "CHUNK_SIZE",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "CHUNK_TREE_HEIGHT",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "ITEM_SIZE",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "SNARK_FIELD",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "blockNumber",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "depositRoot",
"outputs": [
{
"internalType": "bytes32",
"name": "",
"type": "bytes32"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"name": "deposits",
"outputs": [
{
"internalType": "bytes32",
"name": "",
"type": "bytes32"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "depositsLength",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "depositsV1Length",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "contract ITornadoTreesV1",
"name": "_tornadoTreesV1",
"type": "address"
},
{
"internalType": "string",
"name": "_type",
"type": "string"
},
{
"internalType": "uint256",
"name": "index",
"type": "uint256"
}
],
"name": "elementExists",
"outputs": [
{
"internalType": "bool",
"name": "success",
"type": "bool"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "contract ITornadoTreesV1",
"name": "_tornadoTreesV1",
"type": "address"
},
{
"internalType": "string",
"name": "_type",
"type": "string"
},
{
"internalType": "uint256",
"name": "_from",
"type": "uint256"
},
{
"internalType": "uint256",
"name": "_step",
"type": "uint256"
}
],
"name": "findArrayLength",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "getRegisteredDeposits",
"outputs": [
{
"internalType": "bytes32[]",
"name": "_deposits",
"type": "bytes32[]"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "getRegisteredWithdrawals",
"outputs": [
{
"internalType": "bytes32[]",
"name": "_withdrawals",
"type": "bytes32[]"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "governance",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "_tornadoProxy",
"type": "address"
},
{
"internalType": "contract IBatchTreeUpdateVerifier",
"name": "_treeUpdateVerifier",
"type": "address"
}
],
"name": "initialize",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [],
"name": "lastProcessedDepositLeaf",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "lastProcessedWithdrawalLeaf",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "previousDepositRoot",
"outputs": [
{
"internalType": "bytes32",
"name": "",
"type": "bytes32"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "previousWithdrawalRoot",
"outputs": [
{
"internalType": "bytes32",
"name": "",
"type": "bytes32"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "_instance",
"type": "address"
},
{
"internalType": "bytes32",
"name": "_commitment",
"type": "bytes32"
}
],
"name": "registerDeposit",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "_instance",
"type": "address"
},
{
"internalType": "bytes32",
"name": "_nullifierHash",
"type": "bytes32"
}
],
"name": "registerWithdrawal",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "_tornadoProxy",
"type": "address"
}
],
"name": "setTornadoProxyContract",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "contract IBatchTreeUpdateVerifier",
"name": "_treeUpdateVerifier",
"type": "address"
}
],
"name": "setVerifierContract",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [],
"name": "tornadoProxy",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "tornadoTreesV1",
"outputs": [
{
"internalType": "contract ITornadoTreesV1",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "treeUpdateVerifier",
"outputs": [
{
"internalType": "contract IBatchTreeUpdateVerifier",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "bytes",
"name": "_proof",
"type": "bytes"
},
{
"internalType": "bytes32",
"name": "_argsHash",
"type": "bytes32"
},
{
"internalType": "bytes32",
"name": "_currentRoot",
"type": "bytes32"
},
{
"internalType": "bytes32",
"name": "_newRoot",
"type": "bytes32"
},
{
"internalType": "uint32",
"name": "_pathIndices",
"type": "uint32"
},
{
"components": [
{
"internalType": "bytes32",
"name": "hash",
"type": "bytes32"
},
{
"internalType": "address",
"name": "instance",
"type": "address"
},
{
"internalType": "uint32",
"name": "block",
"type": "uint32"
}
],
"internalType": "struct TornadoTrees.TreeLeaf[256]",
"name": "_events",
"type": "tuple[256]"
}
],
"name": "updateDepositTree",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "bytes",
"name": "_proof",
"type": "bytes"
},
{
"internalType": "bytes32",
"name": "_argsHash",
"type": "bytes32"
},
{
"internalType": "bytes32",
"name": "_currentRoot",
"type": "bytes32"
},
{
"internalType": "bytes32",
"name": "_newRoot",
"type": "bytes32"
},
{
"internalType": "uint32",
"name": "_pathIndices",
"type": "uint32"
},
{
"components": [
{
"internalType": "bytes32",
"name": "hash",
"type": "bytes32"
},
{
"internalType": "address",
"name": "instance",
"type": "address"
},
{
"internalType": "uint32",
"name": "block",
"type": "uint32"
}
],
"internalType": "struct TornadoTrees.TreeLeaf[256]",
"name": "_events",
"type": "tuple[256]"
}
],
"name": "updateWithdrawalTree",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "bytes32",
"name": "_depositRoot",
"type": "bytes32"
},
{
"internalType": "bytes32",
"name": "_withdrawalRoot",
"type": "bytes32"
}
],
"name": "validateRoots",
"outputs": [],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "withdrawalRoot",
"outputs": [
{
"internalType": "bytes32",
"name": "",
"type": "bytes32"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"name": "withdrawals",
"outputs": [
{
"internalType": "bytes32",
"name": "",
"type": "bytes32"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "withdrawalsLength",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "withdrawalsV1Length",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
}
]

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cache/deposit.json vendored Normal file

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cache/withdrawal.json vendored Normal file

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docker-compose.yml Normal file

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version: '2'
services:
app:
image: tornadocash/tornado-root-updater
depends_on: [redis]
restart: always
env_file: .env
environment:
REDIS_URL: redis://redis/0
redis:
image: redis
restart: always
command: [redis-server, --appendonly, 'yes']
volumes:
- redis:/data
volumes:
redis:

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package.json Normal file

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{
"name": "root-updater",
"version": "2.0.0",
"description": "",
"main": "index.js",
"scripts": {
"lint": "eslint --ext .js --ignore-path .gitignore .",
"start": "node src/index.js"
},
"keywords": [],
"author": "Roman Semenov <semenov.roma@gmail.com>",
"license": "ISC",
"dependencies": {
"@makerdao/multicall": "^0.12.0",
"circomlib": "git+https://github.com/tornadocash/circomlib.git#d20d53411d1bef61f38c99a8b36d5d0cc4836aa1",
"cron": "^1.8.2",
"dotenv": "^8.2.0",
"ethers": "^5.0.31",
"fixed-merkle-tree": "^0.3.4",
"ioredis": "^4.17.3",
"snarkjs": "^0.3.59",
"torn-token": "^1.0.0",
"tornado-trees": "^0.0.5",
"tx-manager": "^0.2.9"
},
"devDependencies": {
"babel-eslint": "^10.1.0",
"eslint": "^7.5.0"
}
}

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src/events.js Normal file

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const { getTornadoTrees, redis, getProvider } = require('./singletons')
const { action } = require('./utils')
const { aggregate } = require('@makerdao/multicall')
const ethers = require('ethers')
const abi = new ethers.utils.AbiCoder()
const config = {
rpcUrl: process.env.RPC_URL,
multicallAddress: '0xeefba1e63905ef1d7acba5a8513c70307c1ce441',
}
async function getTornadoTreesEvents(type, fromBlock, toBlock) {
const eventName = type === action.DEPOSIT ? 'DepositData' : 'WithdrawalData'
const events = await getProvider().getLogs({
address: getTornadoTrees().address,
topics: getTornadoTrees().filters[eventName]().topics,
fromBlock,
toBlock,
})
return events
.map((e) => {
const { instance, hash, block, index } = getTornadoTrees().interface.parseLog(e).args
const encodedData = abi.encode(
['address', 'bytes32', 'uint256'],
[instance, hash, block],
)
return {
instance,
hash,
block: block.toNumber(),
index: index.toNumber(),
sha3: ethers.utils.keccak256(encodedData),
}
})
.sort((a, b) => a.index - b.index)
}
async function getEventsWithCache(type) {
const currentBlock = await getProvider().getBlockNumber()
let lastBlock = Number(await redis.get(`${type}LastBlock`) || 0) + 1
// if (currentBlock <= lastBlock) {
// throw new Error('Current block is lower than last block')
// }
let cachedEvents = (await redis.lrange(type, 0, -1)).map((e) => JSON.parse(e))
if (cachedEvents.length === 0) {
cachedEvents = require(`../cache/${type}.json`)
if (cachedEvents.length > 0) {
lastBlock = cachedEvents.slice(-1)[0].block + 1
await redis.rpush(type, cachedEvents.map((e) => JSON.stringify(e)))
}
}
const newEvents = await getTornadoTreesEvents(type, lastBlock, currentBlock)
if (newEvents.length > 0) {
await redis.rpush(type, newEvents.map((e) => JSON.stringify(e)))
}
await redis.set(`${type}LastBlock`, currentBlock)
return cachedEvents.concat(newEvents)
}
async function getPendingEventHashes(type, from, to) {
const calls = []
const target = (await getTornadoTrees()).address
const method = type === action.DEPOSIT ? 'deposits' : 'withdrawals'
for (let i = from; i < to; i++) {
calls.push({
target,
call: [`${method}(uint256)(bytes32)`, i],
returns: [[i]],
})
}
const result = await aggregate(calls, config)
return Object.values(result.results.original)
}
async function getEvents(type) {
const committedMethod = type === action.DEPOSIT ? 'lastProcessedDepositLeaf' : 'lastProcessedWithdrawalLeaf'
const committedCount = await getTornadoTrees()[committedMethod]()
const pendingLengthMethod = type === action.DEPOSIT ? 'depositsLength' : 'withdrawalsLength'
const pendingLength = await getTornadoTrees()[pendingLengthMethod]()
const pendingEventHashes = await getPendingEventHashes(type, committedCount, pendingLength)
const events = await getEventsWithCache(type)
const committedEvents = events.slice(0, committedCount)
const pendingEvents = pendingEventHashes.map((e) => events.find(a => a.sha3 === e))
if (pendingEvents.some((e) => e === undefined)) {
pendingEvents.forEach((e, i) => {
if (e === undefined) {
console.log('Unknown event', pendingEventHashes[i])
}
})
throw new Error('Tree contract expects unknown tornado event')
}
return {
committedEvents,
pendingEvents,
}
}
module.exports = {
getEvents,
}

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src/index.js Normal file

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require('dotenv').config()
const cron = require('cron')
const { getEvents } = require('./events')
const { updateTree } = require('./update')
const { action } = require('./utils')
async function main() {
// todo retry
for (const type of Object.values(action)) {
const { committedEvents, pendingEvents } = await getEvents(type)
console.log(`There are ${pendingEvents.length} unprocessed ${type}s`)
await updateTree(committedEvents, pendingEvents, type)
}
console.log('Done')
}
cron.job(process.env.CRON_EXPRESSION, main, null, true, null, null, true)

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src/singletons.js Normal file

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require('dotenv').config()
const ethers = require('ethers')
const { TxManager } = require('tx-manager')
const tornadoTreesAbi = require('../abi/tornadoTrees.json')
const Redis = require('ioredis')
const redis = new Redis(process.env.REDIS_URL)
const config = require('torn-token')
let tornadoTrees
let provider
const txManager = new TxManager({
privateKey: process.env.PRIVATE_KEY,
rpcUrl: process.env.RPC_URL,
broadcastNodes: process.env.BROADCAST_NODES ? process.env.BROADCAST_NODES.split(',') : undefined,
config: {
CONFIRMATIONS: process.env.CONFIRMATION_BLOCKS,
MAX_GAS_PRICE: process.env.GAS_PRICE,
},
})
function getProvider() {
if (!provider) {
provider = new ethers.providers.JsonRpcProvider(process.env.RPC_URL)
}
return provider
}
function getTornadoTrees() {
if (!tornadoTrees) {
tornadoTrees = new ethers.Contract(process.env.TORNADO_TREES || config.tornadoTrees.address, tornadoTreesAbi, getProvider())
}
return tornadoTrees
}
module.exports = {
redis,
getTornadoTrees,
getProvider,
txManager,
}

45
src/update.js Normal file

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require('dotenv').config()
const { getTornadoTrees, txManager, getProvider } = require('./singletons')
const { action, getExplorer, poseidonHash, poseidonHash2, toFixedHex } = require('./utils')
const ethers = require('ethers')
const BigNumber = ethers.BigNumber
const { parseUnits } = ethers.utils
const tornadoTrees = require('tornado-trees')
const MerkleTree = require('fixed-merkle-tree')
const { INSERT_BATCH_SIZE, GAS_PRICE } = process.env
async function updateTree(committedEvents, pendingEvents, type) {
const netId = (await getProvider().getNetwork()).chainId
const leaves = committedEvents.map((e) => poseidonHash([e.instance, e.hash, e.block]))
const tree = new MerkleTree(20, leaves, { hashFunction: poseidonHash2 })
const rootMethod = type === action.DEPOSIT ? 'depositRoot' : 'withdrawalRoot'
const root = toFixedHex(await getTornadoTrees()[rootMethod]())
if (!BigNumber.from(root).eq(tree.root())) {
throw new Error(`Invalid ${type} root! Contract: ${BigNumber.from(root).toHexString()}, local: ${tree.root().toHexString()}`)
}
while (pendingEvents.length >= INSERT_BATCH_SIZE) {
const chunk = pendingEvents.splice(0, INSERT_BATCH_SIZE)
console.log('Generating snark proof')
const { input, args } = tornadoTrees.batchTreeUpdate(tree, chunk)
const proof = await tornadoTrees.prove(input, './snarks/BatchTreeUpdate')
console.log('Sending update tx')
const method = type === action.DEPOSIT ? 'updateDepositTree' : 'updateWithdrawalTree'
const txData = await getTornadoTrees().populateTransaction[method](proof, ...args, { gasPrice: parseUnits(GAS_PRICE, 'gwei') })
const tx = txManager.createTx(txData)
const receiptPromise = tx
.send()
.on('transactionHash', (hash) => console.log(`Transaction: ${getExplorer(netId)}/tx/${hash}`))
.on('mined', (receipt) => console.log('Mined in block', receipt.blockNumber))
.on('confirmations', (n) => console.log(`Got ${n} confirmations`))
await receiptPromise // todo optional
}
}
module.exports = {
updateTree,
}

31
src/utils.js Normal file

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const { BigNumber } = require('ethers')
const { poseidon } = require('circomlib')
/** BigNumber to hex string of specified length */
const toFixedHex = (number, length = 32) =>
'0x' +
(number instanceof Buffer
? number.toString('hex')
: BigNumber.from(number).toHexString().slice(2)
).padStart(length * 2, '0')
const poseidonHash = (items) => BigNumber.from(poseidon(items))
const poseidonHash2 = (a, b) => poseidonHash([a, b])
const action = Object.freeze({ DEPOSIT: 'deposit', WITHDRAWAL: 'withdrawal' })
const prefix = {
1: '',
5: 'goerli.',
42: 'kovan.',
}
const getExplorer = (netId) => `https://${prefix[netId]}etherscan.io`
module.exports = {
toFixedHex,
poseidonHash,
poseidonHash2,
getExplorer,
action,
}

0
test/updater.test.js Normal file

5682
yarn.lock Normal file

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