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 0x6c116bc033af8369ddf95003d1f94549a6ca8375211a3d7c0edb696845a00a11. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4f95abe-4bfd-4f9f-a0b9-adadf2eb2f9a.json and https://artists.proofprofile.net/proofs/artist/b4f95abe-4bfd-4f9f-a0b9-adadf2eb2f9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chansons et comptines pour enfants, Vol. 2
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 0x6d59b46e450329b13d3ec2e651f18be1756429c7a5858a7c918ebc9efce92abb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRR261000460.
Chansons et comptines pour enfants, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ee33d584dd4f7378d6d274d9b30f423b440c4eff005a0a8be3df6d2e4db066. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:40:42Z), 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/FRR261000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e0acca08d68b8ac05a00575c02f0216328aa683be38a11290d05782a354dd4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRR261000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af8826bdc0ad471abfcb6bd1ecdbc613fa09db7febb8f06a7826d8ab3f5c61f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:26:38Z), 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/FRR261000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e1013e3306e58dfa702ea1c2280f77fbf78dca1393e1e09e2e5e9d72a8f4ee. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:25:04Z), 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/FRR261000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fdc121d63e213b2d3c34147adba995f95c36e7f169f1e7e9c7b1f3f38c0b1f. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:51:50Z), 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/FRR261000420.
Chansons et comptines pour enfants, Vol. 3
La Ronde des enfants (50 chansons et comptines pour les petits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f1de4b3debd19fbe22ebe460b966bcebc42def79d0e1fd13bcb8ff5808e957. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRR261000440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5f37b6a3e19907e702cd08e811c3fa3aeeed3dfac9a2bf4d215ae637e3a0d5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRR261000470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a0d9ebc8b3e864af40512d4605728fad18aae5a37e14f1a06449f801f52735. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRR261000550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44692b3258c3468561418e9779127c23410bcaa8cae7d99e8f569e8c19f2787e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRR261000560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8b35716db2587600630c1059fc65f61aeed3663adf38e0b6cec6e57bedd290. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FRR261006350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1506fa6037814c0f8e13dc44e452146f0ea7f9609dab2a6db8c654bde13012. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:26:58Z), 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/FR0W61500284.
Mes chansons et comptines préférées, vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e66ae0beeb4ae444d7177b0badae5a612dc5fb213be5592a15afc48972dbe2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRY510887924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ea11287082682998b88214634bd67f365da0613e550809c717ea6580a29185. 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/FR0W61640413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0d1e4d5bcadb96f5db4e39e6830264ccebf552633c6a045de80a93293bb249. 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/FR0W61640416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef02df2f7eb53be1fadf0842445c9555ebfdb6169db1317dfc113b4675d7e41a. 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/FR0W61640415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c2c2584434ce6d0d6ddfa4401135cca80f5f91d2ad5782ded1d9e94c004d48. 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/FR0W61640421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d19778ab8883e160155acbddd05235b527ce6af81f85a85cacfac8f3ed3274. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAM460701992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8016dc2b51c2ee2b2f23499e227d02f5278731132f3fe5119a9e0db0bad8836. 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/CAM460602762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537296e6823712fb197a9e4a66cf03168f74d7fac544cd41160fd007d58bea05. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRY510779709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c49972254d61d9c068ddcac3dc5e14b1aec6baac3d81ee9a8a2f2a04b0f6b8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAM460602765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994174ac8f8db14ef5b15abccb08bbeb3d563c3215d2eb48876dcc140035a383. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAM460433139.
Les plus belles comptines de notre enfance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1068569aa1bdf31b95ea30795ffebd6c587ff45d7fa94caded459c8febf8e66. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZP7F2586743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda24d3caed80829b96860ceb99b5313978b26bd7cfd1f08b19cfea445fc99f7c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZP7F2586744.
Chim Chim Cher-ee (Mary Poppins) - orchestre de cordes
Films Pour Enfants Mélodies (par orchestre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444d00adf0df7987f0aba90bae70ff0e8ec92550523fd65c4c620ce1649d8ea7. 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/DETL61412317.
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.
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 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.