Skill based on bitcoinjs-lib v7.x, generated 2026-02-09. Docs: https://bitcoinjs.github.io/bitcoinjs-lib/
bitcoinjs-lib is a client-side Bitcoin library for Node and browsers: build/sign transactions via PSBT, create addresses and payment outputs (P2PKH, P2SH, P2WPKH, P2WSH, P2TR), decode/encode addresses. Keys come from ecpair and bip32; ECC must be initialized with initEccLib for signing and Taproot.
Core References
| Topic |
Description |
Reference |
| Payments & Addresses |
p2pkh, p2sh, p2wpkh, p2wsh, p2tr; toOutputScript / fromOutputScript |
core-payments-addresses |
| PSBT |
Create, add I/O, sign, validate, finalize, extract transaction |
core-psbt |
| Transaction & Script |
Transaction parse/build, script compile/decompile, opcodes, networks |
core-transaction-script |
Features
Networks & ECC
| Topic |
Description |
Reference |
| Networks, ECC, Keys |
bitcoin/testnet/regtest, initEccLib, ecpair, bip32, bip39 |
features-networks-ecc |
Best Practices
| Topic |
Description |
Reference |
| Security |
RNG, no address reuse, no xpub sharing, verify before broadcast |
best-practices-security |
External Links
