Cryptographic Integrity · Ed25519 + SHA-256
Verify
Certificate
Drag and drop a certificate.json or evidence-bundle.zip to verify its cryptographic integrity and Ed25519 signature. No data leaves your browser for the hash check.
Drop certificate.json or evidence-bundle.zip here
or click to browse · Accepts .json and .zip files
Or paste certificate JSON
Verification Protocol
What gets verified
SHA-256 Hash Integrity
Recomputes the SHA-256 hash of the certificate payload and compares to the stored
certificate_hash field. Detects any tampering.Ed25519 Signature
Fetches the system public key from
/api/public-key and verifies the Ed25519 signature over the canonical certificate JSON.Compliance Fields
Checks for required ESIGN/UETA compliance fields, valid timestamps, governance tier, and schema version.
IPFS Anchor
If a CID is present, displays the IPFS gateway link for independent verification of the immutable anchor record.