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 0x6844f80451f6a12634a6b9126f2558b7f73ba560799ed8bbdc64c6c0d9a5a89f. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f982a661-994d-416f-8906-25835b0c8f1f.json and https://artists.proofprofile.net/proofs/artist/f982a661-994d-416f-8906-25835b0c8f1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
황금의 제국 Pt.1 Original Television Soundtrack
My Little Baby, Pt. 1 (Original Television Soundtrack)
Rebel: Thief Who Stole the People OST Part.9 (Soundtrack)
Rebel: Thief Who Stole the People, Pt. 9 (Original Soundtrack)
Rebel: Thief Who Stole the People Pt. 9 (Original Television Soundtrack)
The Running Mates : Human Rights OST Part.4
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x7af690571ed5e296931335a3cbe46d35871c1200b6e51374b362b2fabceec67d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2350647.
Movie ‘The Grace of the Teacher’ Take. 2 (Original Soundtrack)
Movie ‘The Grace of the Teacher’ オリジナルサウンドトラック Take. 2