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.