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 0xf1813dfdd98c954dab6ce5646e7da881e81e7e6f7b0a3ad0f17bdd34667d8c00. 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/a0740789-2996-41b5-bcbe-1ebb1013827f.json and https://artists.proofprofile.net/proofs/artist/a0740789-2996-41b5-bcbe-1ebb1013827f.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 0x7263a3924e3ef2878524e1a06b10c7864c0a9d0e803e5de0d5f7e7dc6b7eee94. 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/QZWFU2453253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0323b33a65d1e7a9c5138fedadf6c2727f30259fe8d11b261417715f4200a55d. 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/QZWFU2453259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51da268c536f37942630f323a415ce52f41a08128ec53a7f1e1c19a0c5140609. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:07:08Z), 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/QZWFU2453260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c636424d436e7e43a7e2761d4c82be044f9153768adfac4c27b6eea8cc9b6b. 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/QZWFU2453266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98755c4264e99a99ac883143f7a208dcbb8794fa375dfb5b8799445c146236c3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7S2403657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9923c880046d27d1a07747acaac32ca32328518b19a21f4203515065302e2ed5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:22:39Z), 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/QT3EZ2427065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb0870db0930b2b7760359eca1783a9281bd7c4bdd685aa43b47707afdb50c2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QT3EZ2427067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac11622482ab6a4f18140fcdeaea02b0756be4853e1538eaafb06259639cb3f. 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/QT3EZ2427068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722ebe0631b603e79753708841e5da6c19ae47d0e7cae1169fbd90d8649c4112. 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/QT3EZ2427073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cac08726e0607ca95b4ae01fdce238d7fdad4530853d082fccbac636cd4121e. 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/QT3EZ2427076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfeb3490e7a4ce86ab3052601b5452a144948d143c4e049dc121e648b8e89c71. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QT3F22482640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81593b4a17d312abd2f1219ecd3fdedfbbcf2be948ae467de79f4a14ba956f17. 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/QT3F22482642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8750c062a869b2ba7aa46ccc0bbbaebf6fba9cc5260411753f542650331b14. 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/QT3F22482643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd509500826d91bb6052ca99cb3f8ad1eda30e0f16f157fc7212f6b798b4e5cfe. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:21Z), 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/QT3F22482646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f843a7bb7e152528d7c710ed9d5b19559a3275f7b2ac0f303f0d46a35a01515. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:56Z), 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/QT3F22482648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc126e62dd61ac43c9051262084caa340665603c111822f01763643f1650a0326. 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/QT3F22482649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5157a10036504c607bd3484466f4b4b2e41302630a3729b7cbfc818c389d5a44. 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/QT3F22482654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1c95e1b79a339ca6a3dd5622899f7868641e0b3b13badada231eb160ea6571. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:46:33Z), 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/QT3F22482659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ab1c80454d33ca38718620a1f7f8e992781bfe24fd2f7500d8308e3b7871a7. 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/QZFYZ2551104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4068a1bf735e6b07e4a457559aec15e17ade584a98ecda82e9d16e778c022b. 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/QZFYZ2551105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b3bb3dd0ea5c7135a28d63dbb4bf0b493179b086cbbe277c8aa9c96737a666. 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/QZFYZ2551112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce67d740932a8612110641a16283d0038a0f052ebaa04d0ed5c4fdcf06487a75. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZFYZ2551113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc565da76857f8891d16dd04ac1c5ce364a781185b4261b999be4997c9a51bcd. 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/QZFZ72599454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336180be057b4c0181f8c78872c3ec5440e18afae1cc0bd138e2c7cc1b9dcddc. 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/QZDA62555518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e71a3b39a67face99da82020b062dc6463a439b98fc33038163872c8f0c746. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3FF2512372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d720dea9a59ef5ab2215582dbd6ac369f2a636b4199a8761c73e6c31587609. 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/QT3FF2512376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0933c36ece1c3d2d7ee1d5ae34a851d17fbe58331e97484ba65894cea6f344. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:26:23Z), 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/QT3FF2512377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c6ddbe2f52600a02bf685dbc80c49d95f9c335e90788ed26a08d3d2f0b1407. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:30:38Z), 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/QT3FF2512379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71710f56dc004842e4d427aaa008b216936f08ea4eb30183f1158815c674a63. 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/QT3FF2512382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ab32cd105a05a18a9b47297fb29481f74577720749d5276c0b274a2a6aa14f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3FF2512386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7833c1f9a6db262c4c6111feb6ef806b907998627fbfb57cb1e8fef4494a2c34. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3FF2512387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa12c31b819ad0cc7dd8fda460daec3da7041e719644d7a634ab7368fd18b0cd. 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/QT3FF2512392.