Simple bitcoin-like proof of work using worker threads

index.js

const { payloads } = require('./payloads.json')
const { Worker } = require('worker_threads')

const LEADING_ZEROES = 4
const final = []
let finishedWorkers = 0

for (let payload of payloads) {
  const worker = new Worker('./worker.js', { env: { LEADING_ZEROES } })
  worker.once('message', (message) => {
    final.push(message)
    finishedWorkers++
    if (finishedWorkers === payloads.length) console.log(final)
  })
  worker.on('error', console.error)

  console.log(`Iniciando worker de ID ${worker.threadId} e enviando o payload "${payload}"`)
  worker.postMessage(payload)
}

payloads.json

{
  "payloads": [
    "romi3927273277nevraefiass2103342375ohodkotbug",
    "gaze443157697niscipibgiw1642589262efihjejlos",
    "ocug1626862968veswukguwcu2592116772osoreteriu",
    "iwos2708201740eprihvogmos3764344965agadupiote",
    "nemu3084996143vimwudtanek1213613753ofefuecnuf",
    "isaj4116570015biwidaposci4241495684hezenlatdu",
    "huct2915543159amviwihweuv2600946750jeeduzerah",
    "razk2100190742afatmuclolo997646306routaotahe",
    "gihu2518634792boafiehucef2128481441gecrepirse",
    "zoup2063415799niuwictihal1459892629arrogdekin",
    "arsa41137640wetildedimt3297232485uvebascaen",
    "uccu3568686497mucuminulaf2528880605ueduemosob",
    "luro3950339148zogazeivnac3529592063makevtabic",
    "ijoj2400035192akikodpuhet1846390304oesadipkor",
    "zuhe24553937pjicathesej1889936403voskolrowu",
    "ulog2145473488ewkiusalakm3891503344isosfidulw",
    "mevi4172405508maosocicacn218089igamvugusu",
    "vepi1035082870ratewivneln4027185780ugahidiwuz",
    "toze3177065179demjukuzjab3619747835epocilopin",
    "wefj1958553370osnoputrila406622169tonuseotij",
    "jitm4273326712uulfafoafda3083365269donecwaguu",
    "deiz284958975sonalkedrob3724713613ejlumkuvwu",
    "ekoa329701548nopofarejep3799522462ewergilual",
    "wogi4052082081dsimjugovbe1235427965ifvigesuma",
    "vost153242693ocukuwinhad3925312540celudnawhe",
    "luzz1422123026uzpihwausvi3711685905wocbewenub",
    "opup2085811647ugorwadtekj1040859347askiwosuma",
    "pisg3729559558ucucikufava940175451bwalidhuri",
    "diur2228207618koungurzawt1535270119ihullepfil",
    "guew1198852206uerehozvecd1741914790obbesikves",
    "duba1193434831nepwajmajim3638815420ivekemunjo",
    "bolm1143531649etsocopzijc2871885729ijpuptazsu",
    "jazo2509464204resunouduma364075720lepbamwegj"
  ]
}

worker.js

const { parentPort } = require('worker_threads')
const crypto = require('crypto')

parentPort.once('message', (message) => {
  const payload = message
  let nonce = 0
  let generatedHash = ''

  do {
    generatedHash = crypto.createHash('sha256').update(payload + nonce).digest('hex')
    nonce++
  } while (generatedHash.slice(0, process.env.LEADING_ZEROES) !== '0'.repeat(process.env.LEADING_ZEROES))

  parentPort.postMessage({ payload: message, nonce, hash: generatedHash })
})