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 0x59d6f70f86f4039e1f1328c4e2d61f0e0abb29ae67ffbe662d5e4efc58521f7c. 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/c01dd093-a091-4f38-b95b-12021898caf9.json and https://artists.proofprofile.net/proofs/artist/c01dd093-a091-4f38-b95b-12021898caf9.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 0xbafc78793cd4b7976ca6df8dbd46f8cd9e8a58526d681fc512a88bbdba90f88a. 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/QZNJW2451598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cf7a9f615c2846a9c51679c5df6958174c94a95c9802b61baf0f0adc28eb99. 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/BKSAI2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea62ceea74f7e96863da90da1941da1e066c0d13c77c966bed76a0320fa1888b. 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/US3DF2436504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882b6497e6c66fdb54392f7c2b47fa64584c2289a3dbf4a3f75a5ee1132a457d. 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/US3DF2403115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e121e1f0b27847f0a2fc65cd3a126615278f57dfc6ca6e6ebe0496fe196380. 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/BCH2X2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ba8f00fcd2e45507b89e974377e2a209cd18e55de6de5630bd5ec8197dc4ed. 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/US3DF2469679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29496d5453259cd42730e9ed0fbed1eb59750d32e73ef84e4ad53dec2f15639. 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/QZK6K2433119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3ee8fdbd6577d38462e30a9c780803d523b1db78d83e0fecf1033413156e0d. 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/QZW9L2383977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328d5411e8cf44b4d55ee04d36ee8357ee16ea7ecd8e00e6eecabbf86b5e6fbb. 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/BKSAI2400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576df606ddf63f818579d92048d1d4dd675224854d36df4ad0e1e98d51c74e6d. 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/BKSAI2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da49e9cd855b84d38f99733e20915684e048f886fd4bcc27fcff5d278e48404. 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/BKSAI2400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7171670b3316fcb1d1868d31c90c6b3d0e8ae22c2d42ca12a623d18b0c017d41. 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/BKSAI2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d705339ac309e5c98ff2f767194b2694bc7a841e064ebd892899bb7fad26b0. 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/BKSAI2400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43de0c5a69328d2488959aa3168fc22aab31eaadc307a550bf7efd053c6d70ab. 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/BKSAI2400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed61b96a2162c016cb5e9c80d6807d080fe7e2fd4ef15d38f52359b4d3cfa593. 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/US3DF2458720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf00775d096964dbb5e1b4f8b2fccd2a9c61452690308156902bfb31d60fdad5. 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/GXBAV2382026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8b14168cda099f244d08bd66a6b34cefe3ea763da5efc4e7cd9b3049dcd70d. 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/BKSAI2400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9a86e542d8410865a179f7bc19cedd1f041dd018d90077ebb81f7a20cb114d. 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/BKSAI2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8539ab09432cf82f9b3667e59702e33fe220a2e99121d34b0de72ced85b69b. 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/BKWDJ2500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948711325fa482b235f71c5f177378612ec6479dbe5607b31fcf42dd6b5bead2. 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/BKWDJ2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384c9d02a388a6b210a33a5cb0d42240d43b3aa642c01886b2210d3b341aca4e. 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/BKC3C2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7a5d2c84dc3d1605f85d39b8503c5fc012db3d7190b716eddd5e1751745018. 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/BKWDJ2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dccd382f00cfde7107c76aad0a50586d4af6b35356c20e1922e2dea373e9d6. 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/BCA6L2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d90d881533cbbf3bfaba42b6535e3f33e3aea73491d64a5a19e21f25f69c35f. 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/BKSAI2400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac85e391b210310d7d23ef3d1391086e848cb89e262128d148e32195fcb26d3f. 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/BKSAI2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb004077976ef9591a4280fb912f6e20772bc6f2fc669426ba901a8b4703bfc59. 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/US3DF2468201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef07d1ca0b0297df9d3d75548ad350326239e28f29b6d38ceb9cb0c2a511ccd3. 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/BKSAI2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c78ed387c0935f7fe905dba511efcf9cd19089609a100d21e3fde14292dab21. 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/BKSAI2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398df05bc4a9889eaf49725fe3408d7ce2de0540595ce0fece474caf85470d72. 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/BKSAI2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad030f8b9cb04c8c9e09f3220f68adcbb4d1c40a1e901423855486acdca17ccc. 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/US3DF2415494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426e604f5ca2cae3fcd148333361689acb8d82bf2ac28b6f212c847ac17f2e3e. 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/US3DF2405506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d35a86f6fa1e2119f092624b3392d083c38d5bd14303c41660dd0c3cc48b56. 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/US3DF2404569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f0e3b0e6521063402b061f18d25347b7f698e9d96d13ab2fc7b1dabbb44c19. 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/US3DF2402814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7abc938ad88e9de2022d4ae44b7369924ac24f1e6a71d7aceafa38702c86e3. 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/US3DF2401058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae73588d8b858d35d4e5c94b22d0bd13b21b8d55c1fb724d7d85de09c393a848. 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/QZFZ32424487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa41f54569fdfd1f2e2145e0b58901ea8af5b7dbe84a6f11ee935ce258eb16d6. 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/QZWFQ2345751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf8fdc4cd085148daa3126a75ecbbce2bb632d520902ee4b7a5730fdd7690fd. 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/QZWFQ2344289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a7acb97bac0efc88f9029bf22ed07ae0ef408d268840ba066c9d0360e0349b. 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/BKSAI2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de5aac672d98f24eeaca98787d0bff0ccea95bdb5804615f22e8816225938a4. 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/BKSAI2300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ec6b54c919392fac59d53d8326b42bc21a4ba0c99be280358fb9383df6662a. 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/BKSAI2300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa29eddf89c534d19854329c827194859c6ad8c34e4a2cf8d36dbdd3421b8604. 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/QZNJX2440884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946bcaf1bf2b4e28b0d4817292bf35f8c989c931e509db86979b77e9fd82e6d3. 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/US3DF2469680.