Blockchain-backed authenticity for celebrity-signed memorabilia
Verichain lets authentication agencies verify signed items — jerseys, bats, caps, balls — and issue a tamper-proof digital certificate anchored to a hologram. Every certificate is hashed and recorded on-chain, so anyone can verify authenticity in seconds.
How it works
From submission to on-chain proof
Submit the item
An agency logs the item details — celebrity, item type, owner — for review.
Agency verifies authenticity
A human expert physically inspects the item and records a verified or rejected decision.
Hologram + on-chain certificate
A unique hologram code is generated, its hash is written to the VerichainRegistry contract, and a QR seal is issued.
Agency-verified
Every item passes human expert inspection before certification.
Hologram seal
Physical QR stickers link directly to public blockchain verification.
Immutable proof
Certificate fingerprints are anchored on-chain and cannot be altered.
Why blockchain?
The full certificate (item details, agency, timestamp) is stored off-chain in Verichain's database. Only a keccak256 hash fingerprint of that certificate is written on-chain, together with the hologram code. Anyone verifying an item can recompute the hash from the public record and compare it against the immutable on-chain value — if even one field was altered, the hashes won't match, and forged or tampered certificates are immediately detectable.