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 0x0c876986e63f4416d7388879375b0cc6b05b271e1d0a196942ccf4a0b59bc596. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a233be0f-5580-464a-a9db-84edf8d76d85.json and https://artists.proofprofile.net/proofs/artist/a233be0f-5580-464a-a9db-84edf8d76d85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nowhere to Hide (Original Motion Picture Soundtrack)
Memento Mori 여고괴담 두번째 이야기 (Original Motion Picture Soundtrack)
Memento Mori (Original Motion Picture Soundtrack)
A Higher Animal (Original Motion Picture Soundtrack)
One Fine Spring Day (Original Motion Picture Soundtrack)
Duelist 형사 (Original Motion Picture Soundtrack)
April Snow 외출 (Original Motion Picture Soundtrack)
The Divine Weapon (Original Motion Picture Soundtrack)
Dangerous Liaisons (Original Motion Picture Soundtrack)
Two Lights: Relumino (Original Motion Picture Soundtrack)
Forbidden Dream 천문: 하늘에 묻는다 (Original Motion Picture Soundtrack)
Forbidden Dream (Original Motion Picture Soundtrack)