I m building OnchainInvoice, a tool that lets businesses invoice in fiat but accept payment in crypto without turning accounting and taxes into a mess.
The core problem I m trying to solve is this: Most crypto payment tools are great at receiving funds, but terrible at producing accountant-ready records. People end up manually checking wallets, hunting historical exchange rates, and stitching together spreadsheets after the fact.
Invoice in fiat, accept crypto payments, and generate tamper-evident, verifiable receipts. OnchainInvoice produces cryptographically signed documentation—PDFs, canonical payloads, and proof files—that can be independently inspected. Built as documentation infrastructure between invoicing and on-chain settlement, without custody, manual exchange-rate lookups, spreadsheets or retroactive reconciliation.
