thumbnail|Manuk Island in the north east of the Barat Daya Islands Manuk is an uninhabited volcanic island located in the Banda Sea, Indonesia. Administratively it is part of the Central Maluku Regenc
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 0x09f30a33d3dfcdab592c374445d8be9bc29db45fad6f2e1f6a3cb195669969ab. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89324749-c7df-4aff-8f6e-b9c3fb1793c6.json and https://artists.proofprofile.net/proofs/artist/89324749-c7df-4aff-8f6e-b9c3fb1793c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).