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 0x861224c279617e1638248fa1747f6e6eafbdc54f4f6abb13c2ec55e8343aa201. Chain 2 (Bitcoin): anchored in block 953972 (2026-06-16T16:31:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ae67dd5-f143-469e-b52c-a348c1fa6c59.json and https://artists.proofprofile.net/proofs/artist/2ae67dd5-f143-469e-b52c-a348c1fa6c59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les Meilleures Comptines avec des Sons Apaisants de la Nuit
Berceuses au Coucher avec Pluie pour de Beaux Rêves
Tu es mon rayon de soleil avec des sons de pluie dégoulinants (Harpe Instrumental)
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 0x862d3cf684a091091cdab4c8e5bd31e7e1d197bbd15222ae82f167bbd4b3ba58. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFML2002486.
John Jacob Jingleheimer Schmidt avec Sons calmants de pluie (Harpe Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bdde514b332c112c32ae4b794d3b9d2a9e1420cfb0803424c4a7e85d2fb790. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZFML2002495.
Je voudrais un bonhomme de neige (La Reine des neiges) - Boite à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66060bc88816d6db74c246767c2bbb99225beb7a6016642482a187294b29a24. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DETL61412210.
Coccinelle, demoiselle - Boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412a2750ac924e947ada1b230a1f5af95c852a3cfddb163fc8be60be66f3164e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DETL61411566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6c04dd9aa3e5269fe6a9153883549e942a5700e029b635e50c0df6c4d2d7a2. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DETL61411564.