public Python surface

API reference

The package root exposes the workflows most callers need. Import lower-level helpers from their named modules when you need finer control.

Transactions

Symbol	Purpose
`parse_tx(data)`	Parse raw transaction bytes and return `(Tx, consumed_bytes)`.
`serialize_tx(tx)`	Serialize a transaction in its canonical wire format.
`txid(tx)` / `wtxid(tx)`	Compute legacy and witness transaction identifiers.
`TransactionBuilder`	Construct immutable transaction models fluently.

Signatures and keys

Symbol	Purpose
`extract_signatures(tx)`	Extract ECDSA and Schnorr records from supported input types.
`verify_signature(...)`	Verify an ECDSA signature against a message hash and public key.
`verify_schnorr_signature(...)`	Verify a BIP-340 Schnorr signature.
`linearize_signatures(records)`	Derive deterministic linear relations for signature analysis.
`detect_nonce_reuse(...)`	Find same-nonce and related-nonce candidates.

Sighashes, scripts, and PSBTs

Sighashes

sighash_legacy, sighash_segwit, and sighash_taproot implement the Bitcoin signing rules.

Scripts

parse_script, classify_script_pubkey, and the build_p2* helpers handle standard output forms.

PSBT

parse_psbt, serialize_psbt, PsbtEditor, and extraction helpers cover BIP-174 workflows.

Services

blockstream_provider, mempool_space_provider, and GenericHttpProvider provide bounded network access.

Errors and contracts

Malformed data raises deterministic ValueError-compatible domain errors. Provider calls validate transaction IDs, enforce timeouts and response limits, and distinguish transport failures from invalid responses. Batch functions preserve input order and propagate worker failures.

For exact signatures and type annotations, inspect the installed package with your editor or help(btx). The site documents supported behavior without requiring a repository Markdown file.