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 0x6b0c15e7bc6b6d81512a96aafae7d814a73691e080926a99b9930d97ebcab815. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3f80e27-565d-4ea8-8941-2deb0680efee.json and https://artists.proofprofile.net/proofs/artist/d3f80e27-565d-4ea8-8941-2deb0680efee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
도둑놈 도둑님 (Original Television Soundtrack) 'The Score'
SBS Drama Love Temperature OST Special Score (Soundtrack)