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 0x3b51dea3d5311801448aa8573effe722d0d318cae49d30b148a242032affdc9c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4dd21af7-26b8-40f1-a9b8-cbcdf2bc8394.json and https://artists.proofprofile.net/proofs/artist/4dd21af7-26b8-40f1-a9b8-cbcdf2bc8394.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 0x4d95bac69f29461b2147747455d05fb9af52124bee20aec200cfc0e7acfb0906. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZHN52257455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b889c17312f353cd1837e93491558e47431db29e89a0c3d18dbb8a0cda8e49. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES92219474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a1898ba4ffe1c2f9ef7c9be886d42377efdca7473fb629fa96076a6c7c4f0b. 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/QZHN52257457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b6a0c1994c20d12ef2daed7b3ac6bae98839612e02206422001ef744c0d15c. 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/QZHN52257458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73144cab917e5f1f800dc70b92bd272f378565b50d944dbc547bcb4492cd7e70. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZNWR2365080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199b8b2c45622bdbec26764429b56e60661905feb7ab5a5401411d901e009f85. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNWX2305591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc01d684c943f6d8d437ba2ab2cac5ced295da36092f879c0b8c1522d7fc5ab. 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/QZNWX2305592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cb7ad739dc0adf021e18727141d1d20c2c0b020ee558d3dd8aa886add15f31. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZNWX2305593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bec77044ab9a00f3a126cfcc71fa141e4f7255eb0cbc16a3143c7bde457b6e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWX2305594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014073490eda0b4f1067576b1a6a638fe712f1d2cd2d21f42b57eb2090b0200b. 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/QZHN62494544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fa6bea99ce7493b0a730ea110cc2a239e571f48cb31a1824bce3bb8c094603. 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/QZMEN2426217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdfef799c3aba9df5c122225b6cf637dea909edc7e7a369c37daa37269e610e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZMEN2426219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fa6bea99ce7493b0a730ea110cc2a239e571f48cb31a1824bce3bb8c094603. 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/QZMEN2426217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f29d135b4c5899601a7857481103f3726a843dfcdaf0ba07aace84e62c10029. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMEN2426220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992c3dd7de5e866b2b7d4425a3e85eb933b66f6e8c9fabbd775d2a34dd84d24c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFK2460187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1360d273a82218765defa53e2b213b99747477a70b0bb36bbffb9efaf0296670. 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/QZWFK2460189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5569c986f925abcd13c100833d91a2336a989b0e395e57303ed80b73412090. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWFK2460190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3831a8862f044f53ca426fb50650dc87c125abeaa8cf731a7635dab296098b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:20Z), 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/QZWFK2460191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27888dd56ba029835d2394c48866a24fb9a6a15624a3a448efad00d405b38f4. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFK2460192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c777537c02f6ff783e2721091e9b9e861b6ceb09e79d8ff132fa320c4ac201. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:02:42Z), 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/QZWFK2460193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cc68c8a11130e738abf3754140498a9a9c0c819a861afcd5de12b984cd7c73. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:51:38Z), 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/QZNWX2539434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6090ca4f4bbd14c9904e425d79e97c14f957a9f1db9064562ff54314c1890bee. 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/QZNWX2539437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb165b609fb7f4e1ca641ce2f25dc82a910ec67b077f3727be8258ba0f2034a57. 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/QZNWX2539438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d613a2b4bd2ae22adecc1afaff2679279e17fade3c088d57b961c317535b59. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:33:29Z), 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/QZNWX2539441.