generateKey.js

import {
  createECDH,
} from 'node:crypto';
import { base58btc } from 'multiformats/bases/base58'

const ecdh = createECDH('prime256v1');
ecdh.generateKeys();

const curvePrefix = Buffer.from([0x80, 0x24]);
const compressedKey = ecdh.getPublicKey(undefined, 'compressed');

const compressedKeyWithPrefix = Buffer.concat([curvePrefix, compressedKey])

console.log(compressedKey);
console.log(compressedKeyWithPrefix);
console.log(base58btc.encode(compressedKeyWithPrefix))