thumb|Atomic force microscopy (AFM) image of a PTCDA molecule, in which the five six-carbon rings are visible thumb|A scanning tunneling microscopy image of pentacene molecules, which consist of linea
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 0x6bdac4d03f196930719b24c83384eb8d01a5d37c2b5b53ffe57476474b3e1a32. 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/19d090ea-f03d-49eb-b754-9e9feca65d1b.json and https://artists.proofprofile.net/proofs/artist/19d090ea-f03d-49eb-b754-9e9feca65d1b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xf36c79a7931170bdd2785d6db20cab517cae77bf3e843dee6bfbfc47e298a834. 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/FR9W12338257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3bf6459aabf02745429ebca1f94240417361b411f42608642ec543d0812203. 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/FR9W12338258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158d0b5538cf31b624289a9d14cdc62bbe913227586ca788c0814161c3e2b1c4. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/FR9W12338259.
-22.7°C Au delà du silence (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6d163d2f095c0bab6cead149b0e126d071575dd085c8be8d26768d7e1d19cb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W11718441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c942e62f545315a1bd95af13b90c5cd407eff31b9cd88fe5f9fb850487a412. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR9W11718442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ef1d93d83316e77ab0ea5de1946b0ced5d9ad3ba3e8cf896dd1558b77832ff. 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/FR9W11718443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de439aff9a8246d5bb9b3c1cae81e5108fffe4f08035a96c935231e6f59a69b. 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/FR9W11718444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b47d7d337cdf434ea105b4a64b99f9260bffab9cc7631a4f99bddf88fa7b05. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W11718445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d7401358a1cec7c2e2dea1fa705e27bb840490245b72cdd18395abf9bc9a51. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/FR9W11718447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d47e19793b637301568cb6ccfc8b07d42402e498eedfb9b43d66ef36f8d9b2. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FR9W11718448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe94c813d90defb9e512b2a0b54fb3151777a2ea76baac64a418d3d80d49d577. 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/FR9W11718449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73341d261937b974c225ae66864c93a25ec7eba95d88df99a1b7cfb00e67d6e3. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/FR9W11718446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537c7b83d3a371ccc64ba4c40813deac396360764fadbae432eaf05b1674fbd9. 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/FR9W11414363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb7b83f81e6e46ad89efcb9a1f1a66a71d8cc58082394a9939a6dba92a9fb2f. 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/FR9W11521878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0085c33d8dda3c693ca8006f4c8b88fd46973daee91562d7e956adf95c63f9d6. 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/FR9W11414365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85706944b0c59a8a6ac0fe1a1a689fe165f04b1198fa56610911d4693910f5dc. 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/FR9W11521881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c401d3645f067fbfad54bf7f5b6b65ec8a9bbb7ce65492a61f3e779e9375d0e. 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/FR9W11414367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0756f5208cf50421de88851e01725f1bdcfbd0041522674c8e1af850c683d4. 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/FR9W11521882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a30f6b8c3d811ce25fafc3a0cfff4c4fa898dfb654b3dae81fbfd9dc5a347d. 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/FR9W11414369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a56f359bc4b0acd764c8799bd131239f8b1e7404907831e1a499b827215069. 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/FR9W11414370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff28a0d67fdc6d4a82f236d94ca9a607f6e8fccbbccb3e7f27001f0a15b6e57. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR9W11414364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598a3e46cca4b611830d04b649bd92a072a6bb6c4c803f6a4c60f2153cbcb631. 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/QM4TW1574521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40594d63eb9fefaf123f8165986d79ce335af98c1a520c45a83aca398e264d88. 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/QM4TW1574522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48e7f4ab8922be2363eceba9876365447b3e2fb8638f1dc94c77a31c395ac8a. 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/QM4TW1574524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2d558b6d81a6e83c60791ddc718cd023accb4c1b4e160dea9755b6f77fce43. 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/QM4TW1574526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80b5fc06563e791b8c4da6a713fcffc078153ee35368c2704a01c0edae7c5cc. 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/FR1HO0800160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6559dbf99f2c376f5e652a934af162f6dbe3cb4f06595cb82d1c78527bcd3326. 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/FR1HO0800240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb837c5f10113ce9ab5942b367e25c41c5b7e74a3651f5287b5b7154644041cb. 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/FR1HO0800250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802eb5f6cd661a094c68e1c7980a393744d906d9fb042791541a4f481257ca00. 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/FR1HO0800280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efb92c9835d1e443fa3cb242b2589c111207b945d9287d5620468c7d77d3c0d. 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/FR6V80607805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3bf6459aabf02745429ebca1f94240417361b411f42608642ec543d0812203. 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/FR9W12338258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9e07e04fd24654a6449ec9bfc5f01db984de70f48e3703fbad062f3126dd85. 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/FR9W12312657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1867ffab5d15b95e5ee960125128779e713c2b13b60001ee8834139f1283835e. 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/FR0NT1900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1672c071ebc51372101402dacfa4dee17cd1d406e7a445ed817a86c131ee0c. 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/FR0NT1900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c69de3fb1978ffe6caa98b519955419ae17398fb2b73de93abd4879c080b6d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR0NT1900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f6aac82bd85b707621ae79045dc45ae117baa2b1f8613594f9dfb97c9d70d8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR0NT1900109.
Ambient Series : L'imaginaire des oiseaux (en hommage à Pierre Henry)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a464b3f8c39ded9b5dd21b565aef9199317b084e376b52ceb0d1994217efef. 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/QM4TX1618182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2c2073d30dfd53f9ccc1a236ea29346bcafc26ebd58259df5f938b4676054e. 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/QM4TX1618186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fea6f8681d1793facf133f7f174b32a82586390e535b93380915aa50b30ec28. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W11307251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa785f52c5968b62164ba6ddeaaca5db19b56c43bb191e528a2b43fc9cef446e. 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/FR9W11307253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a7c90f62697e552c5d2ba36a46fb603b50c9cf3148bd4fa8607c6d2450587c. 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/BEN582400276.