OnchainInvoice

Tamper-evident crypto invoicing that generates cryptographically signed, independently verifiable receipts.

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OnchainInvoice lets individuals and small teams invoice in fiat while accepting crypto payments, generating tamper-evident, cryptographically signed receipts—PDFs, canonical payloads, and proof files—that can be independently verified. It sits as documentation infrastructure between invoicing and on-chain settlement without taking custody of funds. It's aimed at anyone accepting crypto payments who still needs proper, verifiable documentation rather than reconstructing proof after the fact.

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