Issue certificates, diplomas, and official documents with blockchain anchoring, QR verification, and RFC 3161 timestamps. Every document is cryptographically sealed and instantly verifiable.
From diplomas to employment letters, Sealayer Issuance works across every industry and document type.
Every issued document contains a QR code. Anyone can verify it -- no account required.
Every issued document contains a unique QR code. Recipients scan it with any smartphone camera.
The QR links to a public verification page that checks the document hash against the blockchain in real time.
The recipient sees the issuer name, issue date, blockchain transaction, and RFC 3161 timestamp -- all verified.
Every document issued through Sealayer carries a Trust Seal -- a visual badge that includes a QR code, the blockchain transaction ID, and the RFC 3161 timestamp reference. It is the mark of a document that cannot be forged.
Blockchain-Verified Document
Every issued document is protected by three independent layers of cryptographic security.
The document is hashed with SHA-256. Any modification -- even a single pixel -- produces a completely different hash, making tampering instantly detectable.
The document hash is anchored to the Polygon blockchain in a Merkle tree batch. The on-chain record is immutable and publicly verifiable by anyone.
A cryptographic timestamp from a trusted authority proves exactly when the document was issued. This provides legal-grade proof of existence.
Issue your first document in under 2 minutes. Free tier available.