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 0x3568c9a62ce02967f85bb3164bfa1b1fd51b71606b7db67746410c9d0f37e68a. 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/f8fa8c46-0b5a-4420-a11b-3e6b400e7923.json and https://artists.proofprofile.net/proofs/artist/f8fa8c46-0b5a-4420-a11b-3e6b400e7923.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 0x2773de7e245ae76b6c58fe02df367c5ad32e9f1af021b0ab500a4092960eb569. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZ4JJ1782813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dab709daae52a5715ce6060bdeb187ac868c0482cfb7195d21cc9f1fd0f9184. 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/QZ4JJ1782815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4690e19deb21bbbf93232667d4f28ec5b853c89105019c271e2c9aff8435746d. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:05:47Z), 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/QZ4JJ1782816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5899db20a686ec8095323878116c578975bfedf10a59de4a0a8ae658c31ca225. 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/QZ4JJ1782817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28909a0f8f63190e9bf86bed9f09fa94e02d7eb1c4f7b76b2ab69ea241e002cc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZ4JJ1782820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00130108e775e96d6a57b83804375c0dcb5a7e256eb36d4ad82cec45e5c5078. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USL4Q2081263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848dba2cf0e5cb1ff568644d517b745adab1d2df6d67c3af72d9522e85bdaed3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USL4Q2081264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b811d42c28df638828989598d26b22bbedc572ad3d187084b5ea17e751312e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:33:05Z), 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/USL4Q2081266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f852a6ebc1c7876ab244d147b5d5f96d09f75bfb5bc467779b673d15f4e573. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USL4Q2081269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6c31b6df9220991e4d4565ee245c239b08d8867aa3e72c4acb5fa8a801254c. 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/GBDHC2121001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766da6d8e6616bcd7314b8a42a0576ccce50b36974c1b1996d9e7b82ebf9ec1e. 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/GBDHC2121004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef44c420f78006e7d07c8dc5f98bc83f64fff956e04f3deba0f12addcc971be. 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/GBDHC2121005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ad3f370a7d372bdc0f68da979a0be4d53956c3d862f66ffe5d1d37e0cabe90. 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/GBDHC2121006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ad0772332fddfd84360348b2031d016c9d6cfbc2c394153b0de3a59189ca63. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBDHC2121007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4ef35ecda31ebca4328d51dc7f570435aaa641ee5a0cf7841ccbff202dfb63. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBDHC2121008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e842cbb8f2deb441c0b35a7a50aae5511e76b1596cad3be25233585a47ce95. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:57:18Z), 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/GBDHC2121009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46807f57640fd0131c859fa2133d5cf27b9957f198ece7fd372c81a8cf8c4dbc. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:21Z), 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/GBDHC2121010.
Speed 'Til You Bleed (Midnight Hunters demo, 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000ac5559d572a38f37feb745280a5bdfb7d56d462b6a82e7b918e932b1fa314. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:25:47Z), 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/GBDHC2342602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9ecaab41b15e0080a186e02fc63a82073527cb16328c1c51a730cdfaf1f9df. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBDHC2448701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35d40dbd45db486401ea73d408fa60311fc860787c1d2222ff3b458b41225ce. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/GBDHC2448702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0630b5c95dd947d42834cf2ad0efe2df334780a9f4c7060fde7b40b6ccfa18. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/GBDHC2448704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba3b62eec954e129081dcb5a9a7d6a458fc4b1455727579368e1c37a0b20098. 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/GBDHC2448705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c3d38b463300a8c56b4440dfa0e9d7dd126300f70dabc08bdd8c9e9d3fc642. 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/GBDHC2448706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6ea9d26ee5266d8745a62a4b72996befca22e91f4e1eb44bf57fe016257046. 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/GBDHC2448707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf642f1988dda119f0be6204c6df92f264a7b12886fa7a30691796b93ac1f3b74. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/GBDHC2448708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc441053955fe78118f94dfea1b622d4d9c56cc754149b60428f6271ffccb7cb. 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/GBDHC2448709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daa92198e2b7ba212226b659df971cb0e6539597044b700654511ab486d8f29. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBDHC2448710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab2ff0ae6f2bd8781d793353447cab4f21d3200dd267230302e7032f283b4e0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBDHC2448711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbd420ca6c349b4064b80eef16e4584a188dc33005b344a9ce9ea20245a5123. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBF862448704.