Ethereum Vanity Address

readme.md

Ethereum Vanity Address

Usage

Step 1 (installation)

$ npm install

Step 2 (prefx/suffix)

Change your prefix/suffix. Keep them 4 chars long so that wallets and dapps will display it like so: 0x1234...abcd.

// ./vanity.js

const PREFIX = '0000';
const SUFFIX = '0000';

Step 3 (close everything)

No seriously quit as many applications as you can, this is kinda intense on the CPU. Or you can change the THREAD_COUNT.

Step 4 (generate)

$ npm run start

Kudos

https://github.com/bokub/vanity-eth

package.json

{
    "name": "vanity-address",
    "main": "vanity.js",
    "private": true,
    "scripts": {
        "start": "node vanity.js"
    },
    "dependencies": {
        "keccak": "^3.0.1",
        "randombytes": "^2.0.6",
        "secp256k1": "^3.8.0"
    }
}

vanity.js

const { Worker, isMainThread, parentPort } = require('worker_threads');
const { cpus } = require('os');

const THREAD_COUNT = cpus().length;
const PREFIX = '0000';
const SUFFIX = '0000';

if (isMainThread) {
    console.log(' - threads:   %s', THREAD_COUNT);
    console.log(' - prefix:   ', PREFIX);
    console.log(' - suffix:   ', SUFFIX);
    process.stdout.write(' - generated: 0');

    let i = 0;
    const to = setInterval(() => {
        process.stdout.clearLine();
        process.stdout.cursorTo(0);
        process.stdout.write(' - generated: ' + Number(i).toLocaleString());
    }, 1000);

    const workers = [];
    for (let t = 0; t < THREAD_COUNT; t++) {
        const worker = new Worker(__filename);
        worker.on('message', (event) => {
            if (!event) {
                i++;
                return;
            }
            clearInterval(to);
            process.stdout.write('\n');
            console.log(' - private:   ', event.privateKey);
            console.log(' - address:   ', event.address);
        });
        worker.on('exit', () => {
            process.exit();
        });
        workers.push(workers);
    }
} else {
    const secp256k1 = require('secp256k1');
    const keccak = require('keccak');
    const randomBytes = require('randombytes');

    do {
        const rand = randomBytes(32);
        const privateKey = rand.toString('hex');
        const publicKey = secp256k1.publicKeyCreate(rand, false).slice(1);
        const address = keccak('keccak256').update(publicKey).digest().slice(-20).toString('hex');

        const prefix = address.slice(0, PREFIX.length);
        const suffix = address.slice(-1 * SUFFIX.length);

        if (prefix == PREFIX && suffix == SUFFIX) {
            return parentPort.postMessage({
                privateKey,
                address: '0x' + address,
            });
        }

        parentPort.postMessage(null);
    } while (1);
}