Bitcoin libraries for Sigil
Sigil Bitcoin
Live browser tools, API reference, and package guides for keys, addresses, scripts, transactions, PSBTs, Miniscript, and secp256k1 bindings.
Runs locally in WebAssembly
Bitcoin Toolbench
Tools share one browser runtime. No transaction broadcast or remote Bitcoin API calls are used.
Tools
HASH160
Compute RIPEMD160(SHA256(bytes)), the 20-byte hash used by P2PKH, P2SH, and P2WPKH address flows.
HASH256
Compute double SHA256, the hash construction used for transaction IDs, block IDs, and checksums.
Tagged hash
Compute a BIP340-style tagged hash for Taproot and Schnorr related domains.
Hex decode
Validate and normalize hex data.
Base58 encode
Encode raw bytes with Bitcoin's Base58 alphabet.
Base58 decode
Decode a Bitcoin Base58 string into raw bytes.
Base58Check encode
Encode a version byte plus payload with a HASH256 checksum.
Base58Check decode
Decode and verify a Base58Check string.
SegWit encode
Encode a native SegWit address using Bech32 or Bech32m as required by witness version.
SegWit decode
Decode and validate a native SegWit address.
Private key to addresses
Derive a compressed public key, WIF, and standard address forms from a 32-byte private key.
WIF decode
Decode a Wallet Import Format private key.
BIP39 entropy
Convert BIP39 entropy bytes into a mnemonic phrase.
BIP39 mnemonic
Validate a BIP39 mnemonic and derive entropy plus seed bytes.
BIP32 derive
Derive an extended private key, xpub, public key, and addresses from a seed and derivation path.
Script template
Build standard scriptPubKey templates or pushdata scripts from raw hex.
Parse transaction
Deserialize a raw Bitcoin transaction and summarize its IDs, counts, locktime, witness status, and canonical hex.
Build demo transaction
Construct a small synthetic P2WPKH output transaction for serialization and txid inspection.
Parse PSBT
Deserialize a PSBT and summarize its unsigned transaction and map counts.
Sign P2WPKH demo PSBT
Build, sign, finalize, and extract a synthetic P2WPKH PSBT.
Compile Miniscript
Parse Miniscript, inspect its type flags, and compile it to script bytes.
Inspect descriptor
Parse a descriptor, compute its checksum, and try compiling or deriving its scriptPubKey.
Guides
API Modules
sigil bitcoin encoding
(sigil bitcoin encoding) — Bitcoin address encoding formats
sigil bitcoin keys
(sigil bitcoin keys) — Bitcoin key, address, BIP32, and BIP39 helpers
sigil bitcoin miniscript
(sigil bitcoin miniscript) — Miniscript, descriptors, and wallet policies
sigil bitcoin primitives
(sigil bitcoin primitives) — Bitcoin hash combinators
sigil bitcoin psbt
(sigil bitcoin psbt) — Partially Signed Bitcoin Transactions
sigil bitcoin script
(sigil bitcoin script) — Bitcoin script byte constructors
sigil bitcoin tx
(sigil bitcoin tx) — Bitcoin transaction facade
sigil secp256k1
(sigil secp256k1) - bytevector bindings to libsecp256k1