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 0x85db096ee1ea6d39662ab1eb0c5f5753e5010e89f716a3ba2cbffc37bdad823f. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d12ac2f4-5ee9-49e4-8427-13d939e018d2.json and https://artists.proofprofile.net/proofs/artist/d12ac2f4-5ee9-49e4-8427-13d939e018d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Je chante avec papa et maman, vol. 1 (20 chansons et comptines)
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 0x6aa4a11a35048a2a7a292071f6ec2a1b6bf4bce747ea496f54ef85873e13ec9c. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/FRR261401380.
Je chante avec papa et maman, vol. 3 (20 chansons et comptines)
Je chante avec papa et maman, vol. 2 (20 chansons et comptines)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20939259317cc05064727408f8898597d21e99492c1fbf8cba326a0033feb090. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRR261400450.
I Sing with Mom and Dad, Vol. 1 (20 French Songs for Children)
I Sing with Mom and Dad, Vol. 3 (20 French Songs for Children)
I Sing with Mom and Dad, Vol. 2 (20 French Songs for Children)
Ich singe mit Mutti und Vati, Vol. 2 (20 französische Lieder für Kinder)
Ich singe mit Mutti und Vati, Vol. 1 (20 französische Lieder für Kinder)
Ich singe mit Mutti und Vati, Vol. 3 (20 französische Lieder für Kinder)
Je chante avec papa et maman, vol. 4 (20 chansons et comptines)