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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90753ea3e7a09823ac18357578eb03e40b23d7bf4072239a0ef476cd7700cf2. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21f01d79-3cad-4c0d-ba97-b2080cd1cd55.json and https://artists.proofprofile.net/proofs/artist/21f01d79-3cad-4c0d-ba97-b2080cd1cd55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My Mother is a Daughter-in-Low (SBS TV DRAMA) OST Part.1
어머님은 내 며느리 (Original Television Soundtrack), Pt. 1
지성이면 감천 (Original Television Soundtrack), Pt. 1
Designated Survivor: 60 Days (Original Television Soundtrack), Pt. 1
Psychopath Diary (Original Television Soundtrack), Pt. 2