@arc76/bitcoin

Deterministic ARC76 account derivation for Bitcoin.

Usage

npm i @arc76/bitcoin --save

import * as bitcoin from "bitcoinjs-lib";
import { getAccount, getEmailAccount } from "@arc76/bitcoin";

const account = await getAccount(password); // slot 0, an ECPair keypair
const { address } = bitcoin.payments.p2wpkh({ pubkey: Buffer.from(account.publicKey) });
const wif = account.toWIF();

const emailAccount = await getEmailAccount(email, password);

getAccount/getEmailAccount return an ecpair ECPairInterface, not a ready-made address — use bitcoinjs-lib's payments.p2wpkh(...) (native SegWit / bech32, bc1..., the current standard Bitcoin address type) to derive the address, and .toWIF() for the private key in Wallet Import Format.

Please use a password of at least 50 characters for real accounts — the account's security is entirely the password's security.

⚠️ Same-curve chains share the literal same private key. @arc76/bitcoin, @arc76/bitcoincash, and @arc76/ethereum derive the identical secp256k1 private key from the same password/email/slot — leaking the key on one of those chains leaks it on all of them. Use a different password (or slot) per chain if you need isolation.