1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xac5d7aa00f9fa0c20f2293890829aff30dfad51b04d8e6e72a7d162b8aa15156. 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/a9c48a40-933e-4b08-acae-a9d3dd1f1a1e.json and https://artists.proofprofile.net/proofs/artist/a9c48a40-933e-4b08-acae-a9d3dd1f1a1e.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 → block OTSBitcoinBlock must exist at that height 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 0x01c92f763acc7a07024572bf52da4874824ffb2ae72173a7858dae149e8c3be9. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/TCACM1669582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c85a0c90a7d2ade96235c8a8955f564542103b6072fad0f366721c536f386bb. 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/TCACM1669584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2966e7ef99c63b2eabcb25edc9068c9bc4aa7b134a1a4c0af36e28cd17ee9114. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/TCACM1669596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed89669061f5c422dd2c43aae47fc9a9f6c0827cf97a415f270ff41c996775e6. 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/GBKPL2082408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd273f9ff4c9c7408ce48649ade31457504cff0e6859d74d0dc3e540f1963c8. 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/GBKPL2082411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74db4415001b4ca23457c25d318d92fea4a2aaf4d41545dd3a0e7bc92fc5f5ff. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBKPL2082413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0887fb5f47e22b7594025ef55c572ec83b4e3c1a0738a81126f7f7236e84ea. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBKPL2082416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aad4c68cd8955e1e932ff7ea615d3c63ba1399675f389162ee399ec8faa4d3d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCACM1657865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1e8249bcad68af4b89da506b774a6706c8f06ba658b22c616d2afef8bf8e17. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/TCACM1657882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ac6f487c01136cea3c262325d63137f811c35fb87f6a1399159fcf5dd711df. 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/TCADU1829471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f7aed54001a3bce52ba3a15f58770c0cadc67b5e89b0017f9f7b529dd71f3b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCADU1829472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53caa0b982a93a06b18da0b6877ac06d8b2b913a9d0609dfc5c987161badaab8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCADU1829476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b02a409f29bc16ae98047c4b1c8306c2d760acfe4f98595f6b613fa123a539. 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/TCADU1829479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4092d07c8a12a2a437f054e9030ca7a26abaf45dc06bd41c62bdc50650288e97. 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/TCADU1829482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479c209ff78baeba69223f3dd2fc9f8835e60c644ae15183ebc14da8c69610f1. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DGA062484878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a38f2d89b2a9d69851786fb354d3922514949f90b822cf86a8b0685e7b1621e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:50:33Z), 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/QM6P42416236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0544e72f64fc06ae71502fa0e0d7b4d3e0f35e0711d047457ae73f9a20869a79. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/DGA062484872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70a1268d33f85befbd3b11997599c11bbfc2ebeba2ce85951a5cc481cc0afa0. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:24:46Z), 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/QM6MZ2468769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cab7798035706825723eefbe4d5932d88940fa9c96b29d9950c26ff3ea3b8d5. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/QM4TX2414296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0325ac07f2e6e27d37dc4abd204a1a5ae968245c2d43fa7c95aa5d40baee29. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QM6N22479340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed4654b988cccbe015e4928f407e48622fc2a2d359e24079576ab995f558482. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA062484873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ae884d4a408af5807900c17e3d11f551b453bcf11b36d8e0ed254b12defd0c. 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/DGA062484875.