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 0xb31b5963ef3d7349fc18f1ea9f995f426c45306a8ef1e7753f0f77e041965967. 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/81a303d7-2f3e-4f91-92a8-23112e58d6ff.json and https://artists.proofprofile.net/proofs/artist/81a303d7-2f3e-4f91-92a8-23112e58d6ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Was It Love?, Pt. 1 (Original Television Soundtrack)
Was It Love? (Original Drama Soundtrack, Pt. 1)