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 0x0984c0966ffaa843fc083952375cb2dd39de957524589ab3881eaa01ec5daba8. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec285074-29da-48dc-8a53-5d0eb44e5997.json and https://artists.proofprofile.net/proofs/artist/ec285074-29da-48dc-8a53-5d0eb44e5997.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les garçons sauvages (Bande originale du film)
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 0x5ca4969afe60849314e02e5b45244dd1b43816957b69499a446e1814ba7df487. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR9W11802532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553f1b9af1636579dbfd4dee8eefe3e9ba7e247133553783e861ecb81969060a. 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/FR9W11802533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf36aa9029d1f3b2ee8719d843dd6335e25baf720da8ff0328d3258667bbc294. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR9W11802534.
La bande - Swamp Lodge Remixed by Pierre Desprats
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a71b0454b9d1f97e9b7b2ff4cdf7c81f9b3512894ad70420ee2084581b7212. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FR9W11802535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2392a74b2ef7bdb1b849c994e87b379ace5e0f72fdd8c1ad02995371700d6e22. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FR9W11802536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c63ac453a8f19f97862c8df4b79c4eb0de1bb94325bbb135ca86aab1b14961. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR9W11802537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae720833b1878fdebd993db5d58eb447dcce0eead829b7c15f30ea55e42a902b. 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/FR9W11802538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486cf3ce33c3c50edf8542843be94b236739cf03e84398486fdf63fdf4bd33f8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR9W11802545.
Séverine et le capitaine - Loubia - Froissements de chair remixed by Pierre Desprats
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1361c31ccc49adf42264fff9e352e221b2a980df09e6374a83deab926d8458. 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/FR9W11802540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cfe2b289465d824270abd791cf230bc802937a054981817d838ad6610affad. 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/FR9W11802543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41520f782236acf1dbb515f178e4cb2580d88109e4885e9f8504e52c2e9831b1. 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/FR9W11802544.
After Blue, paradis sale (Bande originale du film)
Esprit Coubertin (Bande originale du film)
Les reines du drame (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978fa842290e10db737352b34b3b8ba61871a120aa215da66279b6653a131266. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/FR8E72400641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4131682e507c18884e3d4a27dc6945347aa4740bee246c078b3cd932cb2eedc. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FR8E72400646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c005814baf44dca1f337b6b8aabbc673c498439e1e5e202ad820262d5ae906e. 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/FR8E72400647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc3a8e233b8d1613858528513ca1660644d6d3f5e0198e340f21c22a547b346. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR8E72400649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab11078f3d72321d4294c26a29a31f5cc87991510039c3478203adc8e282a439. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR8E72400651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0fecfcaf029573fcdd5fdf1414c089991ec387b4dead472c694645f293316b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR8E72400654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb571a039e24d509b9aa1cf0a8977370d8f77a1d0b9e940308aae34cb8d6c1945. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR8E72400663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c667257dc7827e24ab72ea0f313cae35fe43d4d706ba4f504b2c7c00229d818. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR8E72400664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c667257dc7827e24ab72ea0f313cae35fe43d4d706ba4f504b2c7c00229d818. 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/FR8E72400664.
À mon seul désir (Bande Originale du Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797f55e70899436550e599d2d8a1a3611e1ca9067d429b351a49c4578da0dc92. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBMEZ2353963.