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 0x67515151703e7c11923c2c0a7700142c9ed06363ac58ca7f4347774547764355. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/383f4673-44c5-4e34-bcbf-274279b48d38.json and https://artists.proofprofile.net/proofs/artist/383f4673-44c5-4e34-bcbf-274279b48d38.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 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 0x68313cbafb5cd5cb877070b2cc8440d4737fb7a2227569ec58cc501c9021d5f7. 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/FR80T1700766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409be9003cd55e24fab4ab07be1fbd4efcb5ee6902fe3e47244b52016d2cef36. 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/FR80T0300281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2566edf2fc23a76dfb86099b92b673da7b61ab88e9aff4202e7a4ff5c5107a68. 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/FR80T0800746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446334161fcc8a383b49bc7914cf6bdc2b08bb39f23ff2031f19febdd3aae5eb. 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/FR80T1600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842d46a7a29d4e8b49c9a1819c45205a7dc62266fe7d0e83b464d07112294dff. 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/FR80T0700363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae416590645254b10e785435ebdabc61b5409ab3ecfbdf8697bec1ec98ecab9e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR80T0900111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79f1ec41da0af7b1d80b73fdbf4280b1651b9e9273d6898d4269be3bc4cd796. 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/FR80T1300492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b3f546571aac3a5eaa604099d0ef37a8023167a16590e8265760b78a04d87b. 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/FR0W61315733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45fd53c313b7767fb23ba07a82d1c8a08bf9689baa85a1c82b0928c5990a1a1. 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/FR0W61312812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15deb7ba19d14634763cc598d1e11a65e37b89657463ba462324141ba12096c8. 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/FR0W61312814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb078a2a06a6f82004c4efc719cf37decdbb22c14f2f21db3f0f5b3b08f4a30. 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/FR0W61312816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59dac10694455eab0ca5a7d750154cb29b9ba6d2d14e7c699bfc27e348a32d3. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/FR0W61312817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa185aa9b5a989d8c8a22697f895a977f31bc7e4b156b5b23886d699948f38eb8. 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/FR0W61312818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e19f77250ded06b6a33a0263c9b90fdb9ea66e4aa8ff568b9b03421b36f9467. 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/FR0W61312820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d1d8886c3358e85f1f3429d977aeb9b0b65e9a4ecb7ab0839e33afc78c9670. 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/FR0W61312822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9033c4e60d26c0da0dd9f97384aff7d39badb2fa12576f676d20bc3c9c2dc90c. 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/FR80T1200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394c8dc93941f230ef21d487ec415921396247de7eb7ecbcac6b2f878e553114. 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/FR80T0300425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4cacb53cd9d1449ef3789ab26a644c83124c9f9120f464cb07d2ebc3991c5d. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FR80T1400769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48265c6e6baaf513c0aae222e7584223c4af3aceabd66dc9046ee93f9f1be450. 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/FR80T1300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d51d31151fcb182fb32dba0fdd276247e2243091cf925afeefc78dea11fa717. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/FR80T0100678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97492dc53265be80f5217fe7978a0a732c36a362cc685db7943936405e65a82f. 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/FR80T0290005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bb71b1da7feb854943d226e707ee8976be1e53137770202fa6584cb8312ce2. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FR80T1100777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278602f77351b17c448ba1aacdeaa659d1cee9e2bfc96622d4ceed89df1f0a1e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR80T0400561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4210ea959c5efbb8fe69cd2df4425d32c0cb8a576cc7bfcb0fa8a37161752f9a. 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/FR80T1392651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10e7178b85d4f3b031c4dc51840742498c92999b89aafea8c32dd56abe5683. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/FR80T1100778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d05471a0ef260360e3e94132e7c801fe3312e63d9a05d045bee4f5e3e55b6a5. 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/FR80T1392947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c5c5536fb36f13903767f19e9bd6da48de82c1bb260a90eabadfce339f9125. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR80T0200888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda41f627f646b901501ffa1c6f17b07e2704cafc9c511c9af3e38de7aaf66b47. 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/FR80T0201075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f921af98311a65dbb188f7c644ada29cc6936f04f079f8fdbaa3b1f86bca9ca. 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/FR80T0500552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147e3996ef1041903d9a3bc4a096e1ee2561af5a4bf9461c2b70f6dda8c8d516. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FR80T0800741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe6e9676f364fc1ea96247c03d0e4a4399e19b7e86fc2729664c020a0acea71. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FR80T1300477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc646124c0b345f1d6683ebcbff5f51092cc68ea1c00c9d4c643166d28589716e. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/FR80T0700414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd82846e6868b8d1a236a07dea05d6e850a36c090c29030f892d30acd59178d. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FR80T0500515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a584485f9482b8e37361a5103d5f4108e3769e158fa627852c0a7b308c7b1fd. 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/FR80T0900488.
Les rois du monde (Thème de "Roméo & Juliette" - La comédie musicale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2525f79e96c01b91de9a55dc34997610af8602ad00847d0f6d1f87902a44c85. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/FR80T0000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9033c4e60d26c0da0dd9f97384aff7d39badb2fa12576f676d20bc3c9c2dc90c. 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/FR80T1200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12567681a1fe311fe04d005da8f33e7631423b1f85a391936ddd7b9a647e0565. 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/FR80T0600477.