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 0xd80cc7e3039109d52d931c90e3783e7b74671a11e7040a2cd7fdf02a07a0ed00. 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/9047a887-9727-4ecc-9ec3-c412578a1217.json and https://artists.proofprofile.net/proofs/artist/9047a887-9727-4ecc-9ec3-c412578a1217.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 0xb978c9b409f7d83851fb6a9e51c5cf988569a882af9d524c8a9684e1233825fe. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JPVI02000191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79724f04db375c5bb8b631308e92b80dbd55fc70251cf1f4ab0be60cee4bbed. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPVI02000193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6847815122301b912ae1a79f9dd3b2b7da1a7be3adf2d4e2263b03356cd5dd7e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPVI02000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bb6febe5bfcd306f4d6bbcc3d306993158502da6becf1787cedb21b9166abb. 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/JPVI01904163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a36710a2ced5676a1a70e82309febf3b66fea7f9aa799b8500b4931570c5815. 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/JPVI02000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428182396b67d7585f1cb05c8b9b4b44c9ff634df8c2c0616ef65aa38a895ea5. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/JPVI02001785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d7e6e795594b8a8e65b67ecd75755c0d30d7e9d3757d30a4a92f204883fd28. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JPVI02000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bb6febe5bfcd306f4d6bbcc3d306993158502da6becf1787cedb21b9166abb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPVI01904163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999dd5fc5154361e90bc51e656f1f1eff0ab46a7e1eecfbcaa6c0947d88e236c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPVI02002491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfac87f789f28466e1ac8ac44bd33292043b6d2e51b845bdd2eeba7a5b4f231. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPVI02002559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428182396b67d7585f1cb05c8b9b4b44c9ff634df8c2c0616ef65aa38a895ea5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:50Z), 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/JPVI02001785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2820f390860ed164b489baae0faff2ec910423ec3745b77743f4cddc1f6241e3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPVI02002546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2c51d356a8dacfab0dd6546d2a35ea81aff45d7ac46435d0caff5abb56b7b8. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/JPVI02002547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a029f74b18a29df364190d6dc57f621d80153c8dd4e6b035c09ff2c2f8aeb36. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPVI02002548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762ddeb4ae9fda829223feaebeece1204b2734520e038384cf13a6ab5a820a2f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPVI02101946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b6de28df34ee91b802aea5583e7909efe273157e64f98b98225b3c04025672. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPVI02101947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db23aef0690f01a3919d19c6f768e11dba978eab0d6652a2aa6b6121e667a4d. 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/JPVI02200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043937dab102ec723bb9a2b3f7ca892bc6186d61b46dc65df7f007c754902d9d. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/JPVI02201483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0d75975798f62d2f51ea97753a77b98deca721c3a87c559e5a374df6778c47. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPVI02202328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0d75975798f62d2f51ea97753a77b98deca721c3a87c559e5a374df6778c47. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPVI02202328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fa066bc9b72b2e04e8cd946774d29b3cde8d914b12bd8fa9011fe3a5a31607. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:49:02Z), 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/JPVI02101241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bb776ffbfdc89e851233b411d801889e5e42e37814a7e7ca1d0d14885e9751. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPVI02202333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d50c8c12882d2be17bed59abc41acac03e43c3d0e515bb81c267e887ade11fc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/JPVI02202334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070dbdd5a749e9f38315a2941437c3d2f71c272131070611dbd175de7226cbd2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPVI02202964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f4387a50b3d3a374823cd17150e024e00b05331868b2ae4fa9f672e48e0c0f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPVI02102904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb133531f432b76e80f970ab674756bb91555cf095d68745b3ade58b89b2a5b44. 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/JPVI02202335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53fbe13999fe66b3d9fdac4a972d9eaca34b99ffbd1a6397d3a3e838f269299. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JPVI02202338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b1cc2d8c0a8ed5d1cecaf4dc4c9e932920fa9977acbedf5efe09682696c551. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPVI02302182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9c2352533fdc4c9463fa2ae2def3ebd2d49680e884a639b4b606486234f026. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/JPVI02305106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7362625303ce82539212fa86c1d07621e1b14076dd1a53636afe782a684ad237. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/JPVI02400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc4ddde0e2a8944a2833a0ac5d5f23f58c28026e8d9c369bff34e66e48cf2f1. 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/JPVI02400537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a9ed234f5a801b4da160778e37ae7c566b8fb7cd948c47ff88ec94bd9ca0b7. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPVI02301712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee04f310ff08d13823a687be509917a95178ab706c5afd49e9b02e499a9b07a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPVI02400538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1941e448d6d19e54fb12d624e454e4903b7c771aadd9dfc6dcbd61bcc066ae71. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPVI02400541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9c2352533fdc4c9463fa2ae2def3ebd2d49680e884a639b4b606486234f026. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:25:22Z), 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/JPVI02305106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b1cc2d8c0a8ed5d1cecaf4dc4c9e932920fa9977acbedf5efe09682696c551. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPVI02302182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7512f95b8e275c0d08284310a9c898d2e8ce263084229a07054165d9b16d089c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPVI02400540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b5830bf7edbe6dc4f39b5f7a5b9b1fd8e21712f55a144e02c9dc1189a97085. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:08:21Z), 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/JPVI02403485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1ceebadaeaed7c81657270a50d24a29fbde5a8430097227116fa051e7cd413. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPVI02501784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc098dd4c3128d219c96957751ce796c5542d9cbf0ee350b837c998158388d79c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPVI02502141.