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 0x4f11c07f3c6b9c957cbbacc4d30342dde2b78f9cebb7c74fb01093fe6f185a0a. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b760c734-6a41-48c9-8484-5e9ab6c1869e.json and https://artists.proofprofile.net/proofs/artist/b760c734-6a41-48c9-8484-5e9ab6c1869e.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 0x5528a2637696160e006b257643cf9b9d757bcbaf1252a5dfc669dec1ff2f27ab. 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/US83Z2322889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714c0aee8b961191253d1adb11f54f4fb9af15c47f59d7909ba29b92f2b22ec0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US83Z2322893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a4459c4340c1a6da85a04ac6cb3c4b8e3ec6a28a0f5907463f68ff41c74468. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BX3Q02400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41897f92bab7fdf0d1ab4eb83d8c2c51bd7d8dc3c6db5c04d9b1ec101a5e3ab2. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/DEDL81203382.
Rita Lee & Roberto - Classix Remix Vol. III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa346ca0752f3f6d45ba0ed70d531ff555e15240e04073703950a25edfcbdd4. 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/BRUM72003225.
Pega Rapaz - Gui Boratto & JUNIOR_C Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba81cd28d9b01721b4ec14f145f95141e375e7373a22526786b547dfdfba4b84. 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/BRUM72100916.
Banho De Espuma - Fatnotronic & Emmo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd892b96ee4bba9e616cad08eec62629978a2cdaba289c528ae8a3588f47b94ae. 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/BRUM72100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e7f50f5c4cc5e647ae9ac17eba5cf102f956dc0f5aee04c2b8abcb23131654. 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/BRUM72100917.
Tatibitati - Renato Ratier feat Tqt Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80545b222da26bc13666d47679020b2c54f4c2ba3ce235be6f0b988c8964497c. 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/BRUM72100915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25a9929677e472ee6c8e041207282df9ee15a2f0d94c56f8e7cd2781434da33. 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/BRUM72100647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013fbfe89f8fda937e994f69b966dacc8876abfb85094a9ead0fd6afc9646a2f. 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/BRUM72100964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dee9127325700602a2167ef294a3ab49428e90d88a7dc369c2046cf8ddca83. 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/BRUM72003674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3347387845283492de68de7af4580c755cfc7ddb576614f1e2deb4d14846a4b. 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/BRUM72100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb65f63424801c56a24cb3a0c4167be9aee0e99c660a677d8762b6e7544a92dc. 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/BRUM72003237.
Chega Mais - Diogo Accioly & Nuven Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7257ab1dcbb853249a380c5633be7b31166ea9091fbb278b46aa6e7bc93d654. 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/BRUM72003677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a64cb94561bf2eb56dde314b006e8e24bd671cd90a40e571462a97db16baaea. 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/BRUM72100645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99e9428d163bc95ed59a3f673ce256c4ff48df6038dedf79f6e917f7846da9f. 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/BRUM72003235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa210ba5192b191eab63fd24655f51bb43836a7e307baf3ce2a46eff9090c5ae9. 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/BRUM72003239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6440a19d282936864fa6875cbb5625a40fd967d90fff7748e3109e64b85011. 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/BRUM72003675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb414645e0e67c6de5744ffedd79c71c8eb8609021e9a37d6ba8d83f97e10c2df. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/BRUM72003240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf349599184cd70dab17bc455797c83d988fc4455f2a16c127ac5a6738b4283. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRUM72003226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d40e130e49af036960a9893ca14d3552402e222cc9e2116412d220df3c9aa8. 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/BX6IQ2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d94a7feefe8758be57ae26419dd3f85f79ac20c3d4134eeb7358b27234afc2b. 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/BX6IQ2500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088b12f423ee51aa0b57a5c9037eebac83166588de6a21475cb977b45eb2536b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BX6IQ2500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c97110fce6ed82f8b1735dc155c848dc47ac474541322bfc2291f156b11d6a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BX6IQ2500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f896dcebd151967f15514159be9a708641485c815a183953ab4ca3e5a58c265. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/BX6IQ2500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c8506760959be6a812b155d2f45b933da37e4895fe85e0fb87f5408b4ee750. 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/BX6IQ2500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0374d1458707e72441420cfa64a2dfd2c73622ee10dfa16ae98ec81f7658ff27. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BX6IQ2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592b8879f08f43b1b4f2e21f1aa77e613567e75e554e8376b8e7374f38a26f57. 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/BX6IQ2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddfbae4a0fca4f870025db1193974683ae36feaf7a96de20901a50bc82b19ad. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/BX6IQ2500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2455874c92fc6b210e3d7fc0d42f1b51f51677ad0d7c46b2f9847c96304b163. 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/GBKQU2458309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5b1ed71fadbc1127d2394fb60b13ddd49a396ed52cc98317fd65b8535c605d. 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/BX6IQ2300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aa7ec3e64623110da08956e88cdf2fd0042c942fa9421447e88828f18fc26a. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BX6IQ2300234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc6203657c1266a3e2bd6f42346e25f15a71d99298890a787be6ca1bef5f83b. 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/BR6BY1500007.
Nothing But... Pure House Music, Vol. 28
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a972ba795a20a178680fedba09005ab745ea2d2e97955a4b86c64b68e8f1c2. 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/GBKQU2466615.