Paste any FacturProof evidence certificate below — from a VAT verification, an invoice consistency check, or a conformance validation. Its Ed25519 signature is checked in your browser against our published public key, so you never have to trust FacturProof. A valid signature proves FacturProof asserted this exact result, at this time, for this exact document.
The public key is fetched once from
https://www.facturproof.com/v1/vat/attestation-key and the check runs entirely client-side
(WebCrypto Ed25519). Nothing you paste leaves this page.