How Document Verification Certificates Work
Understand how Ed25519 signatures and SHA-256 hashes prove your documents are authentic and unmodified.
Last updated: January 15, 2025
The Verification Process
Every RedactProof export includes a verification certificate (verification.json) that allows anyone to independently confirm the document's authenticity.
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Three Ways to Verify
1. Self-Contained Verification
The PDF itself contains a certificate page with a QR code. Recipients can scan this code to verify the document without needing the separate verification.json file.
2. Online Verification
Visit redactproof.com/verify and upload the verification.json file and the redacted PDF.
3. Certificate ID Lookup
Each certificate has a unique ID (e.g., "rp_abc123xyz"). Enter this ID at the verification page to look up the certificate details.
What Verification Proves
What It DOES Prove
- Document was processed by RedactProof at the stated time
- Document has not been modified since export
- Redacted document was derived from a specific original
What It Does NOT Prove
- That redactions are legally sufficient or accurate
- The identity of the person who performed the redaction
- Regulatory compliance or legal admissibility