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 0x955e1b26d1920483d58ec43f1da9bfe2efcc67a810533601b5ca0f22649d3781. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea0794f7-b5dc-4c22-8b8a-95a839829886.json and https://artists.proofprofile.net/proofs/artist/ea0794f7-b5dc-4c22-8b8a-95a839829886.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 0x28ae89c8ec73cfca55735013a405f4fd7828b61884aa55c6e45d8c714bb743aa. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:41Z), 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/FR96X2081394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e20b07e07254c627f37975e04488fc4b88bdd28b1f08faf74ebf1bdfa96921. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:03:53Z), 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/FR96X2081395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252d2721862253f0837ba6f9aa10bdd8a6bb93941ac793b58842ee63f2503c48. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/FR96X2081396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68895d2a7b32cadd659e89f2125bd7a63d68430b5b95ee0902c789a93f6f0ace. 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/FR96X2081402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1873607c792cb186666eb1458e4f494ac357430511703857ba7f38851207d90d. 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/FR96X2081403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a07e85f0c3de2aab0b08fb02cc9fa7e983cddf8b17b6d3402baa86e0e5db26. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FR96X2081383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4c1338effd63425c5abceb6e8454aa1b8188fb0f26ee5bff31baa0c2494119. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FR96X2081384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7069731cea63511d8e4ea03a92f9ab16f835f386ce66fa64412c3ba3722158. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/FR96X2081386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ac918ea540e1691a906e067a5ab9efad4a39cc1696b46918cd69009d6d1644. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FR96X2081387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7eaf7b503217b8a687e49aaa4ea138247f06a507390f62b3edbab65ed61641f. 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/FR96X2081388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91caa244e72da15289f24173c1958fa37653743b8fd56ae7d8763292a37aa83d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:24Z), 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/FR96X2081392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad2f41c4b54dbbba2499c24e0ddae26235689e1b17875e5c51b181dcee58679. 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/FR96X2081393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684ca7ea0a6d567718b7e535b883353293742f737df9f09eb250e8b5f625aa97. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FR96X2081461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ebddfd3c330e117f5b6ea2f8bae75cae7afc16c47941707cfaaea036938678. 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/FR96X2081464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125d40cc463a66b09f0441f4d614a000ff0026a0dfbf4c4c160f8b0bded2857e. 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/FR96X2081467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f2f12411b252f335c62a76d12842e43beb0a441d92fcf116b2dbf919f53a23. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR96X2081468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab0daccd17f51fabeaff9eb57289a64ef6211fd2acaf51e7e647ec5923fe500. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:40:38Z), 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/FRS182123061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcfd463f9c4eb740efd70fe6ccd5db8926cc0a83cbc03977a4b727790f6d5a3. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/FR96X2094263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683296eaeb7a196f4b58d360168ad323df4f619977b7b662ea4e818a484e9d94. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/FR96X2094264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5adc6b60e7a314c559d362ae3822d740bdaf683d31b0ba89568176717fad413. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:30:13Z), 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/FR96X2094266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68f61372eed828b052c63209bab95e9a64f86b126a06d161c12c803dcfb3ddf. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/FR96X2094267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0888993ae043c8a2c9ab180f6a4e709c6f04ee99bdb2156cf317b34b853ba1b0. 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/FR96X2094270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b59e68202001983f2099bc775c1bc1b3b6eb6cee342bd83d8458fb1d2bb08f. 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/FR96X2094277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94652e4374af8fce5edf8c7a353b63b29933e8adbf9ad66e0d9e407905f8796. 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/FR59R2106796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d159b11031e2e43eedd26ce0bbbbc08c0f2672ccb29d2750cff1f497292e991. 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/FR59R2106797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee81002037c15d1d430ced7ec6abe3678007448de8345464729022903855883. 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/FR59R2106798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeda8cdc8fb68a505fe1a8126adbac1389d3b78ef3e2671f169288bddb36ce11. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:05:51Z), 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/FR59R2106800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576cb230fd5779b4cea30a314a5837339b690bc88eaf0ce6bbc91288d400f7f8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR59R2106801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67274ce9beca544f5bfd47eff8ea29764e4b10989c56601406a44bc712621253. 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/FR59R2106811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09bc033853e700b56ef611b2d1c6b1e967883b1c0e6f8c5544182a3f2ce02fc. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FR59R2106813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ab1e1be1116d771df78a09d02834f786d84af5c59e16a5e39de7caafe770e2. 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/FR10S2218866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727c41c4bcabe71fb9fc24bb3723054b0224f45e65c721591477174db5874ce0. 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/FR10S2218867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90e163c03803d960624d154b05b07d2f5d28c39ffa7c56f0ad721908e164125. 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/FR10S2218868.