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 0x4ba8695be13afaa68c02c94f4b8dfd686cbe2ea372bae6459431113c530e1614. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94e336cb-60b0-4ad1-b7b6-e0021f87bed2.json and https://artists.proofprofile.net/proofs/artist/94e336cb-60b0-4ad1-b7b6-e0021f87bed2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Фоновая музыка 3 (Чехия) [Czech National Music]
Фоновая музыка 2 (Финляндия) [Finnish National Music]