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 0xcc45e52d3c6327691eaa91b7158b660c4664a36e1295855a9b6c2fe0f516fa63. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cd4ec09-95e4-45f8-ae62-452d81f69b21.json and https://artists.proofprofile.net/proofs/artist/4cd4ec09-95e4-45f8-ae62-452d81f69b21.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
What I cannot Say With Words, Music Will Do
Broken Hearts and Superheroes | 張り裂けそうな心とヒーローたち