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 0xab14839fd7a58416f116ac93b961f990c272d9a4ba8b6984f7c6ec072338d6ee. 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/82b5de07-d46c-468e-9247-4fc2ea1d7d6f.json and https://artists.proofprofile.net/proofs/artist/82b5de07-d46c-468e-9247-4fc2ea1d7d6f.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 0x76da4aa462a04fc17f587ba50d0e9aede7cd05c56717e1c40dcc4855c1b58672. 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/PLA380200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf639320c5828fc6a9e066ca77c22e917da6f2d40dbc45bd629fd12922ec6e550. 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/PLA380200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b50ddcb2ca39776ec92ba55c378b810a8ddb53f91b4e6d8871b4bf32c471bc. 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/PLA380200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec43b584f5ac55205b687dcf9f1d7815f5b21303ed86dace9f6c350f707f7cf. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/PLA380200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7ef62508b720d7beadaeb7ab2b3e3cb2bfbed662c78d33b3255dfdfc1bc1ef. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/PLA380200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e82bf76b753d3d279cf526989b4fc3beeeb34a2d73cb6e60dbe99bb5fb5ca15. 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/PLA380200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c91a8efd34a78cf6a70d8fa0f64664141651fdcffd996a2b1ee9f1383dab0b6. 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/PLA380200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012c43daa6f283e7bc2693a0c1ee2f837aec984a2b7c6ae867f0d9d950b0586a. 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/PLA380200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba9db825cc75ab0357d30f4987fbbebe6241ee26927a1913984a78d3380da87. 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/PLA380200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cff72da2a275d2dfdeb4cb7b21848d1441237220b2030e96a3ce4745136d795. 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/PLA380200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8332ee4191325cd706d22f5fbef0a3b9b7495b60168335c384374da75611937. 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/PLA380200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd836c05b23cea1bd6bf60583680b312c051e7aefe3ced9b90f4010f15749514b. 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/PLA380604002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d363483f20304a15884b95c13157e0f4d8f3ee0d42ce961da9d05a893f6d0c. 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/PLA380604003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad383edbd7569971a762a54fbce6b3061ab173bd819e4b1818857b997b59073. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLA380604004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd296df11cb621f4e917c0371f43377b28cdc59ccb159b8dd54d87ab5699dc563. 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/PLA380604005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb0999b2d2c96bf25cff72004e6709fb55657842c9837b81dd59a393e976b95. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/PLA380604006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380c8d1d60b3e3a76a035b6bd699f5d3b7975b0ea24d12d88690d6c9b71660f6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/PLA380604007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b485ab8e9240c5308946ee6b26d56684bcdd113d8a5c70780173961f6a8acc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLA380604008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dbda20a784aadf5a8690cf81870fb7986f19845989f1f5386e186aaa9ba811. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLA380604009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aca71195996d494c829db2af95add7383e531192c04f94e97ba2a7c6acb1a0. 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/PLA380604010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf653f9b9f6cfba5ddfc9baabe548f98ab830dc3dc607aa621da40fdfe4311267. 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/PLA380604011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5691b47c59cda90928e4029587666830c099d80d974779e1152be9fddf2393ad. 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/PLA380604012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fe58dcb916b5951ec6a8b09958107445f1b3d293ee1d7fbfb17572fb362dfc. 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/PLA380604014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4a8584fd31a728f5848b2db9b07e9b69be1511cca452953a160140df3da2fc. 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/PLC061504935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2297c8b69bee4758b26a8d0fe8dc13b19b119d66166cd546a5fa5c6f25aa1c1e. 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/PLC061504937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede06e7c616a927b7b34f7499a8dd910f612b8ee2a87be7902fd1a86e9fe5060. 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/PLC061504938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e328daad68153af54d47720266cab2b17e43b8ea6ee613dbd96b2bde5f27d1. 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/PLC061504943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060fb43ec03293a45b49228b7d0a690d88e01f951821a3474652e431aad9151e. 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/PLC061504944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc700243284a6faeeb12b552d058c0ae18a9d71d88004cb4d4dec72adaba0cb. 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/PLC061504948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2ef34f21396b762f76ff74c18b345bd6b4adb477e1e80412fe7b24b0010b3a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLF241401390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b3651a3f1b7989049fbd6a93698a0a10bd7adfe10bcaa129bd661a1c7a9838. 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/PLC061807379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276a4c96125afe07f5fab86a2bce43e3a98b04f955c50e16eed34e15455b5d9b. 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/PLC071203012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98ca2b10a213d870095a6b2c7fd0886ce3a0ac6ae526ee7f7dcbdb40f65f47e. 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/PLC071203013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e5dc41bd7dba872a34ca4ccd0ae5e81d855505f47cb117028310919b88e3c7. 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/PLC062117602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351db843fb70008feb5c688bd72f7f12dbf3e569b4a94cfd89d9033178d1ce1f. 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/PLC071512009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc70cbfab09621bcecc40933d567982221f773dab40ac667754f9bf9179a499d. 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/PLA380609202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c01669aab99794153837abd7d6c401867aea0f55611789f80f1c8389ae6bab6. 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/PLA380609205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad5c3b01770b8762fcf2ae78cbdfc34904e523cd3625ede7a71aa9288e94843. 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/PLA380609220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a7f21775a5759920e5cf895a21e0ee5a0ae4f3880ef098491fec3839b6c809. 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/PLC071001002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb61fdd7c28e8eeebeff17dc2c7e303c88d41146ed4893afa998bfa023a38ac. 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/PLC071001038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d5e72372ad1d59f78cde35c4da797ba1a33a5dd90a286fc7da9cd6f14a736f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/PLA380609011.