Change One Word, Verification Fails
Every signature carries a stamp and a QR code that opens the agreement's certificate. The signed copy proves its own pages, so a single changed word fails verification.
About this video
A signed PDF is only as trustworthy as your ability to show it has not changed. Attest makes every signed copy carry its own proof.
- Each signature carries a stamp with a verification code, the signing date and a QR code.
- Scanning the code opens the agreement's live certificate.
- The fingerprint of the signed pages is anchored on Horizen.
- Change a single word and the open-source verifier reports that the pages were altered.
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