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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6075c9082121588a057225694cccd80c64153c04f287597f82004027e0fd6580. 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/e3ddf7a5-21ad-4fd5-80e5-f6bb2e1d36ad.json and https://artists.proofprofile.net/proofs/artist/e3ddf7a5-21ad-4fd5-80e5-f6bb2e1d36ad.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14181dc044ba2c4e0337871358fbd6d21b4f39d11bf51ccaadfca416509e6ade. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GBJX36116135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8752b748a016a670453685c398bffeaed42fa9453496311cb6aa8da289ac40c7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBJX36116136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495287e1494bd912759c79821268ab34ca72c65b16b4d1d92eda13e716aaf631. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/UKSP42000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376b26a243f02fcde58841dd03d04e2ac0d92a5aa08e4daace4cd086c942ef8a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBLV62003832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788a54dc97a37e470ecba0d984f7f4859a768512fab98f4ea6457c37327c18d7. 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/US83Z2045577.
Wide Eyed - Hermanez Closer Distance Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1853013cdf36b0431ce024d45a16c092ae98208ab90cba1bee98e1e6fd4e3ecd. 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/US83Z2045578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6145367725c5481c22d4274c6be7c1b38e6d697bac6eef22bbacfcec3c1a1dd. 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/US83Z2045581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28e5b678538da7176aee5f8cbcf45fddf4f4361e780835ab28218c0ae4bcb19. 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/QM4TW2186434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e79525d7fe63f42db84d10e5a525a706b327d5e50329fad9a6f0e3a854c33c3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/UKSP42100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c3973f701319074322ead5c0de41ea74c7601994ca55a44a7798c22c33e5ad. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/UKSP42100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222dee2cdf96c5a57551efc50eb5181c2bdb3ed7613cea6210ad58ab822deb34. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKSP42100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b7ec634a85fed4ca1072f620ba558bf4f1d47bd6f9258a06bcac28007a4f46. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/UKSP42100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433c5081e08b984d19c977bebb4db317ce10c04d70e196a9e72dd495be64d64f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UKSP42100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb671ef51f0f2f1295ede33bf15be950c301262388b5481128208b2f00b41d116. 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/UKSP42200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a375e58e486a2e3c5b079ef338ab6f7bb16b3a0af67065f4da5de885b7c842. 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/US83Z2232693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15890bab931acb9484dea643c3e52863b3470c9b58d48d2dad4e3304d46354ef. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US83Z2232694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0eb4b38ea950b4ce86d69147cd715d5c127e2d9cef3648762ca86ddd26e2611. 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/US83Z2236623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199cdb173dc60f713961f35fcc03c84b0e53e284f461b9a6fa1bf4562b4942fc. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/UKSP42200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090848cd12a64b04ed091171839e9a2618930995c0ac7b70d131d956184711b2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UKSP42200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4ac40cf6a171df6e1f4cb860debd22aeaaf42461ab4bf5d7f77ae42f94117b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKSP42200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61e55bd93924ba881f009df73bdc9d2a1124cb1095d17dd2168a9c2bbe8e4f5. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/UKSP42300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23da21ce1ebef97035817cd2c60a2f6a507616afed42810a0b9e45b7d55a769. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/UKSP42300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea24793af0084e10d6169195c5d635cfb3f0995cd29ae4eccb5a79d7559ffe40. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMBZ92364312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b16e39ff7e9b16d215e8add45d920c78646db32128f70551e6c66597fe8a78. 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/GBKQU2384945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee1b2c3bfb2b987717837c6e8ca67022eda31ef8282e4978e122f323e0b7426. 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/GBLV62300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97e97d1f73893528b3065b31271946bc81058aa6069ba1a08247295e9abc444. 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/GBLV62300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d94262873bc2a0a772d78f883c6c054e81de004f89eeeade1c3023ccecd77c2. 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/GBLV62300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6c61f852e5f79f269f0a0ff3228e8b417a1db7f5dda51a5958005c29fb868c. 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/GBLV62300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f1eb1382b15c2b3fda78eadfb594a7161ff82d54135c7e9466a92adf252a36. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBLV62300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eba9801037341d648ba756e7124f4f83950c6e5348b5a724697af807b608e39. 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/US83Z2461368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a38c2b29b4b7d814f225e36a82e97ba9acf3b0fabc802da217a488b961bb00. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/US83Z2492921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e71e93e0926b4e7f135c5450b72e1a5959d957e99ada86f7e76462383fda623. 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/QM7282423672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea24793af0084e10d6169195c5d635cfb3f0995cd29ae4eccb5a79d7559ffe40. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QMBZ92364312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3c8296ce8f30cddf16216eb6475855a2405fd08ecd5ddde5186938eab1bac4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US83Z2049379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10dffafe6248b1d07d2a86df902c1f8000cdaf33fffcaf3ac8ef4c93573448a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKSP42000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28e5b678538da7176aee5f8cbcf45fddf4f4361e780835ab28218c0ae4bcb19. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TW2186434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ed70b80bbc6fd303f376830cb2496fe8d0a1ce71e2140d2b29ad8420445293. 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/FR85U1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342857485e06f38b480c841f729cfe6ce6095a425f5a64ea5d53315121ec0143. 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/UKSP42000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f3f29ffbde2a68a1372b63a6b316a7911b42364dd52733ee93d8d75673aaec. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/US83Z2492923.