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 0xc592bdbbd156d61e29e7202ddff4c9d34eff3d60928b4ed1e6ffb38a5d7fbc4f. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/087da466-7779-429b-a25b-0b6f738b9450.json and https://artists.proofprofile.net/proofs/artist/087da466-7779-429b-a25b-0b6f738b9450.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vocal'isles (Tony Chasseur présente chansons et voix créoles)
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 0xcec29268a3e02fc085e610e1be90d9f31a3a0c26aaa7ad82f275bc30ef3baa07. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR6V82396400.
Insurrection perlière, vol. 1 (Voyage dans l'écrit d'Aimé Césaire par le dire et la musique à travers son oeuvre)
Insurrection perlière, vol. 2 (Voyage dans l'écrit d'Aimé Césaire par le dire et la musique à travers son oeuvre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d968a3dd638466d22a432d28fc6713fc55fc0f7ee6f6295620eed90243d973. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR59R1715675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa31c504f2c9dd0008ad1af1ae55210d4b647b9b36ad8c2211fc73698a886ea3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRIDO2410020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5563666019d7126f0bf10531f5fde3af5ceb60994655c4545a8ebb95f1a77703. 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/FRIDO2410018.
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 0x4ad224a230a555fab72052d1f7ba4a325265e45b2f6966bb61a0bc63391a8430. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR6V82597712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e1eda33c285b3e6d73fafe6e5384e20aeba213f517c52646f55c5b53b63589. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR12Q0400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47a801bd11bb32896046fd6237cd57ea0ee8461d9f74b843aeb7e5f10b5fb03. 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/FR12Q0400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1576c596bae5ac43f9b85918f014d395d10f2a868e61447f40ed3e43023dfb15. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR12Q0400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9519ff4322166bf8ba025fe3beeaafbc71051acc409167baec4386566f4a6c72. 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/FR12Q0400150.
Best of Thierry Fanfant (Chanté & mizik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c86e6ceb44912da140c5fdd57ae997454d26bcb97ec005c459d0c402800554b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR00W2000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61d9631b327ec29d0c0788e43edea1bb2e3727c1b289fcac9ea283131969929. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR00W2000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fdd62a61ee475812943f7738d1ff05a301425671e3eb7d355acf3fae3de6b4. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FR00W2000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734e287ba52f050be1a7dfc7504708fc7e8cc1e2e564eee6959bcde529d0fb07. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FR00W2000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552e9d7675648c7a09a5d73fa988d134c9da5846d1d1fe1610fa8f09b3d9957f. 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/FR1S91000201.
Jazz des îles : Jazz from French Island...