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 0xc7f104709299def6c7c0a634b0dab1876e3a7df94809f2ca5cf7a2661fcddf4b. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63a8180d-d988-4e5c-ae01-4100f84a7a63.json and https://artists.proofprofile.net/proofs/artist/63a8180d-d988-4e5c-ae01-4100f84a7a63.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
꽃피어라 달순아 (Original Television Soundtrack), Pt. 22
역류 (Original Television Soundtrack), Pt. 20
내일도 맑음 (Original Television Soundtrack), Pt. 25
Best Chicken, Pt. 1 (Original Television Soundtrack)
대장금이 보고있다 (Original Television Soundtrack), Pt. 20