const fs = require("fs");
const mnemonic = fs.readFileSync(".secret").toString().trim();

// web3.eth.defaultAccount = '0x50A8e60041A206AcaA5F844a1104896224be6F39'
const arbOneKey = fs.readFileSync(".key").toString().trim();
const arbOneAddr = fs.readFileSync(".addr").toString().trim();

const Web3 = require('web3');

const w3 = new Web3('https://arbitrum-one.public.blastapi.io')

async function getNonce(addr){
    return await w3.eth.getTransactionCount(addr)
}

async function main(){
    const nonce = await getNonce("0x7E8E62EF14E9ae1a0B1dd753b45AA42Faa6208D7")
    console.log('nonce:', nonce)
    
    const msg = 'some msg that need sign'
    let res = w3.eth.accounts.sign(msg, arbOneKey)
    
    console.log(res)
    
    let hash = w3.eth.accounts.hashMessage(res.signature)
    
    console.log(hash)
}

main()