coin 0.1.0

Cross-platform multi-coin cryptocurrency toolkit: Monero, Bitcoin, EVM. BIP-32/39/44 HD keys, Schnorr/ECDSA signing, PSBT, BIP-47, MuSig2, ABI codec, native secp256k1 FFI with pure-Dart fallback.

Changelog

0.1.0

• Initial release.
• Bitcoin: P2PKH, P2SH, P2WPKH, P2WSH, P2TR address types and signing.
• BIP-32 HD key derivation (DerivedKey, DerivedSecretKey, DerivedPublicKey).
• BIP-39 mnemonic generation and BIP-39 seed derivation (PBKDF2-HMAC-SHA512).
• BIP-340 Schnorr signing and verification (SchnorrSig).
• BIP-143 witness sighash (WitnessSigHasher) and legacy sighash (LegacySigHasher).
• BIP-174 PSBT builder.
• BIP-47 payment codes and shared address derivation.
• BIP-327 MuSig2 key aggregation and partial signing.
• UTXO chain support: BCH (SIGHASH_FORKID), Litecoin, Dogecoin.
• Ethereum / EVM: EIP-55 addresses, EIP-1559 and legacy transactions, ABI codec.
• Monero: Ed25519 keys, primary and subaddresses, ring signature primitives.
• secp256k1 via native FFI (libsecp256k1) on native targets; pure-Dart fallback for web.
• Ed25519 via native FFI on native targets; pure-Dart fallback.
• Bech32 and Bech32m encode/decode (BIP-173, BIP-350).
• Base58Check encode/decode.
• Hash functions: SHA-256, SHA-512, RIPEMD-160, HMAC-SHA-256/512, PBKDF2.