uints family
encode/decode number as bitcoin variable length integer
A web3 client to fetch blockchain data just like you are used to with HTTP clients.
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bitcoin OP codes
Bech32 encoding / decoding
A Bitcoin wallet Snap.
encode/decode value as bitcoin OP_PUSHDATA integer
Validate any Bitcoin address - P2WSH, P2WPKH, P2SH, P2PKH - Mainnet & Testnet
Fork of bip174 with BitGo specific changes
A module for getting method signature info from an ethereum method signature.
Bitcoin Cash general purpose address translation.
A tiny secp256k1 JS
A pure and powerful JavaScript Bitcoin library.
TypeScript library for Bitcoin apps.
Bitcoin Cash cashaddr address format support for Node.js and web browsers.
Lightweight utilities for encoding and decoding Solidity ABI
An interface over BIP-32 and BIP-39 key derivation paths
Bitcoin Miniscript, a high-level language for describing Bitcoin spending conditions. It includes a compiler/analyzer with a signer‑agnostic satisfier that derives symbolic witnesses (e.g., <sig(key)>).
Reactive primitives for Bitcoin apps.

Multicoin address validator for Bitcoin and other Altcoins.
A modern Bitcoin Core REST and RPC client.
React primitives for Bitcoin apps.