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 0x34a5c24e2403d7ace77299c601785bebfa6adb029f8a75c1f373c79bfbe8d2b4. Chain 2 (Bitcoin): anchored in block 953932 (2026-06-16T11:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fae1ecc-b8f5-45c8-94c9-dcc7924f01f4.json and https://artists.proofprofile.net/proofs/artist/1fae1ecc-b8f5-45c8-94c9-dcc7924f01f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sick Can Can (Original Documentary Soundtrack)
Queerying Nature (Original Documentary Soundtrack)
Eventide (Original Mini Series Soundtrack)