Why on-chain
A certificate issued by a shop and hosted on the shop's server proves nothing beyond the shop's own database. An anchored hash proves the record existed at a point in time and has not been edited since. That is a narrow claim, and we only make that one.
Phase 1 anchors are signed and published; on-chain writes go live after the audit. Certificates issued now remain verifiable and will be re-anchored, not reissued.
Connect a wallet
Sign a one-time message with your wallet. No transaction, no gas, no private key ever leaves your device. The signature proves you control the address.
Claim a version record
Every product has a version record: which painting, which source file, which print run. When a run is closed the record hash is anchored, and anyone holding the code on the pack can resolve it.
Verify independently
Anyone can paste a certificate code and check the anchor. No account, no wallet, no permission needed — the point of the record is that it does not depend on trusting us.
サンプル記録
Enter the certificate code printed on the pack, or the code from your order confirmation. Format:
GM-XXXX-XXXXXX.
- Edition
- Work
- Collection
- Issued
This record confirms which file the print was made from and that its hash was anchored on-chain. It is a provenance record for a reproduction — it does not make the print an original, a limited edition or an investment.
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