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 0xddf0c753df22874c5cc21184de32a0f3effafc0d8f0ce202a816ebe8174e652a. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/159b9cd1-7410-4198-a1d7-c7308226585c.json and https://artists.proofprofile.net/proofs/artist/159b9cd1-7410-4198-a1d7-c7308226585c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La gloire à mes genoux (Extrait de l’opéra rock ‘Le rouge et le noir’)
La gloire à mes genoux (Skydancers Remix - Extrait de l’opéra rock ‘Le rouge et le noir’)
Les maudits mots d'amour (Extrait de l’opéra rock ‘Le rouge et le noir’)
Dans le noir je vois rouge (Extrait de l’opéra rock ‘Le rouge et le noir’)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc670febe4370d2984c07dc99f6ce7b8f93b92d7fb29d28e6bdc1ce1567642061. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CH6541884827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0542a029eb2b6aaaba6ff1ec24f8a29ab35feaf4fc1e6ce757f984d4c6d342f. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/CH6541990230.