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 0x2eb218392c14a6231fa15e9dcea1bd194d8d55e8bcd450483aaeb20c857a5da6. 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/a1c02d36-fb9e-418c-b293-4cd1541da02d.json and https://artists.proofprofile.net/proofs/artist/a1c02d36-fb9e-418c-b293-4cd1541da02d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Billie Jean (Michael Jackson Original Piano Cover)
10 Finger Challenge (Original Game Soundtrack)
Rescavengers Retrowave (Original Game Soundtrack)
Bright Size Life (Live Guitar and Keyboard Cover)
El bueno, el Feo y el Malo (Piano Version)
I Wanna Be Like You (El Libro de la Selva Instrumental Cover)
Locked Out of Heaven (Original Piano Cover)
If I Ain't Got You (Original Piano Cover)
Dos Gardenias (Original Piano Solo Version)
Thinking Out Loud (Original Piano Cover)
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 0xe004c8c9f2462495fde4a8677f28512e5dd3da53565c0a123313f1debbea985c. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/CAGOO2064360.