Library providing functionality for doing universal invoices covering Bitcoin, Lightning Network and RGB (on-chain and LN) according to LNPBP-38 standard. Supports address-, UTXO-, channel-, miniscript-descriptor- and PSBT-based invoices with such features as:
- Paying arbitrary amounts (donations etc)
- Recurrent payments
- Per-item prices with multiple item orders
- Expiration dates
- Currency exchange rate requirements
- Extended information about merchants, invoice details etc
- Optional merchant signatures
Read more on this invoices in slides or watch YouTube recording of one of LNP/BP Association development calls discussing universal invoices.