arc76-bitcoin

Deterministic ARC76 account derivation for Bitcoin (native SegWit / bech32 addresses).

Usage

pip install arc76-bitcoin

from arc76.bitcoin import get_account, get_email_account

account = get_account(password)  # slot 0
print(account.address())         # bech32 P2WPKH address, e.g. "bc1..."
print(account.wif())             # WIF-encoded private key

email_account = get_email_account(email, password)

Both functions return a BitcoinAccount(private_key, public_key):

• private_key — the raw 32-byte secp256k1 private key (identical to the ARC76 seed).
• public_key — the 33-byte compressed secp256k1 public key.
• .address(hrp="bc") — the native SegWit (bech32, P2WPKH) address; pass hrp="tb" for testnet.
• .wif() — the WIF-encoded private key (compressed-public-key convention).

Elliptic-curve operations use coincurve, Python bindings for libsecp256k1 — the same constant-time, side-channel-hardened library Bitcoin Core itself uses for secp256k1. RIPEMD-160 (for the address hash) is taken from pycryptodome rather than the standard library, since hashlib's ripemd160 depends on OpenSSL's legacy provider being enabled (not guaranteed on OpenSSL 3.0+); pycryptodome ships its own implementation so address derivation doesn't silently vary by platform.

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.