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 0x51b3ecf5863afe9fbddb3d073acbcc39e359e7435a3657fd43f83a2bff564400. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/868fcb45-a52d-4f33-a5aa-cf093eb00a01.json and https://artists.proofprofile.net/proofs/artist/868fcb45-a52d-4f33-a5aa-cf093eb00a01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musique du Soir pour Violoncelle et Orgue
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 0xae0f8e242e3011eb5b4fb816ca03e7cadc65c58a878722475ac85168d4eb3a24. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEE861500804.
The Carnival of the Animals, R. 125: XIII. The Swan
Brigitte Klassik zum Genießen: Sol Gabetta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38356ceb42c7c4eee3362d592600b21e163668e5fc0eb9ca21016db5feeabb89. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEE861500781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38356ceb42c7c4eee3362d592600b21e163668e5fc0eb9ca21016db5feeabb89. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEE861500781.
The Tale of Tsar Saltan: The Flight of the Bumblebee (Arr. for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b0d33db10b9184c1ce9fd61a9420c34e94f14499a2e1dd9df59f29329fe795. 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/DEE861500780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0f8e242e3011eb5b4fb816ca03e7cadc65c58a878722475ac85168d4eb3a24. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEE861500804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38356ceb42c7c4eee3362d592600b21e163668e5fc0eb9ca21016db5feeabb89. 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/DEE861500781.
Temps Calme : Musique douce pour enfants et bébés
"In The Air" She Plays for a Relaxing Women's Day