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 0x785aeff078c2392aad73134aaba989c0368dc1a355ed2a24cb97df0dcee6232b. 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/c4263fb3-c4db-408c-8771-4225fd69fbfd.json and https://artists.proofprofile.net/proofs/artist/c4263fb3-c4db-408c-8771-4225fd69fbfd.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 0xc40929afcc331959b137c83eb9b02c8896525ab9e10edd47666ce75eb78c96e4. 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/QZ2J21500693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a6d7ed9dd3fac66d47b4c5f425f0ff1e66473084bc1d4b23f2f82542ef0384. 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/QZ2J21500697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd3da35faba43efdc9ae2f1b136b99fe847e7a63311fd23131eda5f6f007d19. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZ2J21500698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ea07d33e5694ce72a246d2bd579bf55f8b16725f122a3f068fa06e9034d08c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:50:39Z), 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/QZ2J21500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a61eb0cec1867de804804adbb78bf44e7aa45ef4149e5f33d26aa9ab662febf. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZ2J21500703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87ea9272d8422b7608365acfdbbb26b54fb5c23d5c83871674a82e5ba6f683a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:06:05Z), 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/QZ2J21500705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e00381a1f71df67bd6535843ac0f94bac022e1574513cc91b2c1f7eb74d034. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZ2J21500706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09b59c92cb8ef50076f5066f04d76ca16d5d7c3358acd9d1bbf6373340caa42. 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/QZ2J21500707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1267ee6da3eacf74dc967de648915fb1872ed2f09b70b3cd3fc471b5ea686c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZ2J21500682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16404133dda591c6b71b675663d626ae88b60dbc3104184ae11619ea0de24a6. 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/QZ2J21500685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23b5104e6435180273ded308baae3ec0531e860afee09fdee044d9ce07635e4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ2J21500687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5a25fee74f69e65cdd24137231282a7def4dfb8f90a81f3dbfa8b11ca61a2e. 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/QZ2J21500688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4ebdb93c6eea5d48cec96f7aed9a0f00772dfb24fbab68ae37023364818a3e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZ2J21502090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba0adc4dda94204031f48595d4fe79a3b920affa8b32952d8cbfed502a108d9. 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/QZ2J21500648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5651145db0707a6b94302f6f4cbae2cec9be641ba6ba4a7ceb2e01f3025606a. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZ2J21500649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5947c19d8f18b08b352a858ba1a40f4e61fdf1ea942864de40ca7f66c46a8ecd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZ2J21500653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d71be7eb9566b6c9de974ddd1575971c1fac9bb9d263018516da50b126e11bd. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZ2J21500654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74681fc7d944748c8a32cb9c9a892aae649c83260a1081635468a017db5675a9. 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/QZ2J21500671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c167d8010fc7f2fc517d96a4199e4df7fcd27ed590af057ab5f620767dcd04. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZ2J21500673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074ca63a48d9e8b361db3dee7317b7e0228b77eb6129bd2f0b3544df924940f4. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:01:54Z), 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/QZ2J21500674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e43cb29e06cda15f0775e00394a105216d8acbfc7400f277881350f7b245c6d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:21:37Z), 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/QZ2J21502105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c911b469c8ea9d26c7bdef1427264d25fa019849d777ad5ecc192bbf495959e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:38:36Z), 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/QZ2J21500657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d89f55179b3b1b37f5a373439d25f81fea99c4f69427538cca8b48f45d2df27. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZ2J21500658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48373bb9d50c063f50760957f2d76d652810dbbc408fded3d94810cd6303170a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ2J21500660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7f5862878595189a601846be51720b04025c04d1a5e4faaa4a9de724210880. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ2J21500661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fc5e7537d1fcbab5878cb44e729928dfb5fa47ac80b656b2a70f25525c61f5. 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/QZ2J21500662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38ae8f35ac0431ba285c5cc9183005bae472b8b036ea36fbf440049d22a6ed2. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZ2J21500664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401d0e643f51068b0a977a7c641c005fee1dc3d0df0abd718f12db0108b10e09. 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/QZ2J21500667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddbbf21f9bd3d55b757ffe89657c840d1eaec3c1464530fc13452fd537c1206. 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/QZ2J21500670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf76bf81045a320dccbca036a2d11ce0f3c7165b6dd74a32a13abbfad09bedf3. 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/QZ2J21506411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b0f1c721d07b67d1cd254f0a54891df9e106ce934b4aa168484ca4af1ab116. 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/QZ2J21506413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cc6162d8ffd82165565614895fdb5338fb5c49ad026869184dca957f57a54d. 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/QZ2J21506414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4083aef876c785b7f70d591d934c8fc886d7949f6236338d828db766ff7ecd53. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZ2J21506415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f89a430613f3b67f32a0b393ce7602c74103d791b3d872b175d4177ea9c5fd4. 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/QZ2J21506416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343dd5220d36c315e094f5e3f1313480562842355b751444bc6951473f2b95c7. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:04:56Z), 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/QZ2J21506417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6c531075bc241f56517e684c12899d441ae745eeb75f599a7bd8a568b44a4b. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZ2J21506418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d5bb9f609ddcdebca0766dd822a66dbfbbbb1912590459f67606e153c44fc5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:32:45Z), 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/TCAFS2184241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20a5d87074a5bd069526aa85b526bf647287ee91f95ac8e5fc56b8ed95c8adc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAFS2184244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a2823d47f75fc69895165e442a0bb3358f2474f283afffc6a0f01f43d06c25. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAFS2184252.