Ukiyo-e (浮世絵) is a genre of Japanese art that flourished from the 17th through 19th centuries. Its artists produced woodblock prints and paintings of such subjects as female beauties; kabuki actors an
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75db3d9a178ce8ee35355b7d9399043d7df533997d25cab4012b84bd5092f563. Chain 2 (Bitcoin): anchored in block 953973 (2026-06-16T16:37:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a9b96b9-e06a-4dbc-80fa-291d18223dce.json and https://artists.proofprofile.net/proofs/artist/2a9b96b9-e06a-4dbc-80fa-291d18223dce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).