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 0x383a978bb3a2475984f8bc4b9362e336b34f93bbf1878e94eca0203c47ddc9e7. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13276ce4-b02b-42aa-87ba-c96011670010.json and https://artists.proofprofile.net/proofs/artist/13276ce4-b02b-42aa-87ba-c96011670010.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mamini Spaghetti (HOT C.H.E.F. re-miXXX)
Kilo Poma (3put Dnevno) [Balkan Drill Underground]