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 0x0557b4c92ab51e6cb5fdd24dfbf42ed923369768a8fcd6af6ce6e3856492c9d4. 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/48367966-636a-449c-a424-82dc17ddca91.json and https://artists.proofprofile.net/proofs/artist/48367966-636a-449c-a424-82dc17ddca91.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 0x4820ad8285892b2331919738d66d80fffaca2f1b34c167f3718cad994ab0fbfb. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZK6P2132220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea088d31dab877ed0781c7bd02f35492d3d2cb56e96b3acb89da7420c4d53b9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:30:49Z), 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/QZK6P2132221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f96f86e5285d73b875f684170111f2d506545e05e83231223a3c921a25074. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZK6P2132222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071be623a83503ca834c59d835c5134cb8efd25c40a2d281d2f65ad9e919cc9d. 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/QZK6P2132223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa5091dfd8567a826b3dc3be33cb939386086a9f0ea83c7e3fc0e8add49a97b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZK6P2132224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8283420cde0030ffd2000e32b2dc66f00edfbd453a1f8613b9eebf494a7cf0e. 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/QZK6P2132225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfb4bd3cd5e639c0942bed012ac8ebe1120c3dc3fedd983b5fbc29c5e64b7aa. 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/QZTAS2160740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759c50c2d0d88ea570595869c3ccb37174d39467b811fbc57eb64601039f9ae7. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:07:05Z), 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/QZTAS2160741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc460a0314ee25afd51a2b75cd33ff350e826c9d4a7c21a3ed5ed1a6bdd583a26. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:19:02Z), 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/QZTAS2160742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef68daf6764e7916aa6076619aadcd40150b292bae2b8741ff4e3d91497b658. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTAS2160743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a5b85da00f0b36c70cba7b01c0320f291a214c6d1c2a00b57d89756bfcd2ef. 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/QZTAS2160744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b5e0d169441a25f87cdddde23fb8d5bfb2d1be263bbe01e7df3a77f94fdb3a. 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/QZTAS2160745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8f5063c9f955ee45883a9bdfd229df658cc4554dd4b06b229e7efbc3898c60. 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/QZTAS2160746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968da4087d7af804e397e07c4d2180e2718dabc75c3d6aefe9881bb089d56ac8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTAS2160747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7ac3853af9cfc524307044050fdf9c267421c60067b714ef1180ed4742a06f. 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/QZTAS2160748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf5bd9b2ec5f7b98e124401dcb593baebaf79bc03378ad54dc5e6265966d104. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:25:43Z), 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/QZTAS2160749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8988b589fa977e1d6f482dfd91bc699bd44807b8969e53326d7d4daf951510. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZTAS2160753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01830b2b3bf2d59529b9f9cafb9101e71dfb91ff08f66204502be5f08fdc7d71. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:20:19Z), 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/QZTAS2160757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111dbc5731506aa47809938a357ba4446fdbe0aab2874fb799eaa72f0a856e18. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZTAS2160761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528ef94daa3cae99edfaafba3b3cbd279a65275e1f80b8f21188b99800dc6eee. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:48:47Z), 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/QZNWU2374541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdf641d673e4aa1893f14b6ec2fe11abdf710bd626aafc3558198a2ce33b39b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:31Z), 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/QZNWU2374545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871880392d4778a113aed07c500678c19fb3c38cd057479ee2fcdd302e64892b. 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/QZNWU2374546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffe9c829c5608f569e8a7b12dbfa54af8815c39d0692922e7df733333d7d064. 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/QZNWU2374547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2e9eb9f699a2bfde137af6ec9f99a4e60b6373ab9fa9bd6f6c2958895533fb. 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/QZNWU2374548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2558accfea0f2092800931139203396e45c57558d1ec827c911ee0d14e492a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:58Z), 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/QZNWU2374550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020ca07db470d615d82fd1bd3708fcdfc628badb90850db975fd7e9e1615df54. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWU2374551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e44695b5aeab33a05d568e7df5872dc055034a2f69aa8e62cb21b46d8e0d2c. 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/QZNWU2374553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d435adb37242aa8ec560382858b279e4e96747832fe5293acfe38e7831463c2. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZNWU2374554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199ef8b8ee3ee758e4fc7bbf697e900352921d124733370ac23e37083be16494. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZNWU2374555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea9e0e1f72d8371abb3a18fd4d0abf44a7e60253ae9255e7b49f1b699587d97. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWU2374556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae2aca81ec3265c04d388172f0c6b6d3eba53c59bd3be905b660c93f6ed2362. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:46Z), 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/QZNWU2374557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc055860418fda6764b60185e38133f7ed215200f4c9648f608ac3adfb7fbdfc. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZNWU2374558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6724617df12f9743164d5031a24931c2d3ff8146d3cf7df2827c96bf171717. 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/QZNWU2374559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d58847eba811d05f523b59c6a2aa47d7f1bd935f1f736c80511f4752ff39c2b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZNWU2374560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff79d043b03fba6324b2fc1e0e2c57431c4a2f89ae4ff7deef5f0efcd9ca32e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWU2374561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee24ebd09391600a34c67e1bcb46b58f93d169b7b9e0bf36c48b5885295f6c37. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES72433506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242499a5ccc3f7c2aee3ecf173438e2804b1aa65f0ef0a1dd11560aac208adc6. 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/QZHNB2420102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141951701c3fba8f0bf4b97a8c24f737a699aa1355803f62bbf6fac9c8a91d05. 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/UKQNV2300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141951701c3fba8f0bf4b97a8c24f737a699aa1355803f62bbf6fac9c8a91d05. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKQNV2300097.