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 0xa73ed6707660b3f598b743deff39d79ac6d5b6bf4331785c267ae97b74425214. 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/d5332b48-4031-456c-8396-8848fa97e8b8.json and https://artists.proofprofile.net/proofs/artist/d5332b48-4031-456c-8396-8848fa97e8b8.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 0xf5fef50363777aae0cde49e327d60d9a11851eb10a2e1e765b03171db891a303. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:08Z), 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/ES7421600208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f762bf1309bb4a8df7d57c7a30f006ce5f8d7fc681818ecf25452520653517a. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:44:24Z), 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/ES7421600215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09225003e2633aa670e5cfec3d70bab875fb7096557ba497e0f2bde3e7912773. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ES7421600221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d65bfe308c1ac7ca8dc0bf7ac3844a3e9c32813cddad4f2b2f8ae4a88152fa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:58:56Z), 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/QZFYY2065060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d65bfe308c1ac7ca8dc0bf7ac3844a3e9c32813cddad4f2b2f8ae4a88152fa. 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/QZFYY2065060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd204d30eb1ca7325309d3ba33c82392e0aea5d5e45b98a3cb0eacef6474f946b. 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/ES6102000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b55c8b437f0e22c74c4a8c15980091253cd3402889479dd4d7c8f8951ef5fa. 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/ES6102000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892a798eb06e4fae34beefce48ba0b17754d67cb8400e6d12efb4ac0e9748465. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:12Z), 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/ES6102000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3cf4d62b9bf42c6fcea2262015452088915a49550285441ec53c6ae91b4e09. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ES6102000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbedf663cab9d0fd758bcd63a445eaec594a331a0d601e693dcbae0399978b9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/ES6102000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50462c1583ffeac783406e73f13ae85594951b718a036fc9c831f5c8bb41047. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/ES6102000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72860b4d62e091807f4fcd993bcd88b8226a5eb5e72b1cc9e452516f275dcbbf. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ES6102000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed7ee36b1013e6e82d317c0173c8d47fb996b9f5c79302cd0cd89ea1954fc6c. 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/ES6102000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfe2f8b7ced3b7fc09869e4daada7a6fa97f920df47300e2a4d978108838cbc. 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/ES6102000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5647ad0b7590920f76aaf109a1c4180043c263263d322b1a43e6134900f191. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:31:52Z), 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/ES6102000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234fb4f6830e382b807dc7202aa86d1f3b255d46e0c80685e82fec01df31b609. 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/ES6102000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269baa4706ba67c7bdedaaac1238ef947a134683c1b3648fe297316b7b3607cb. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZDA52058188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb49b7672118cf3fdea9110b4e24106bb9920c57d6572086e2318f9420ac4146. 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/QZDA52058191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb145fca029bd26b28748b849d64e5b4afb87ec2ce9e0fe6c982ea66a5d52bea. 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/QZDA62091150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5203f4561d643650a9b0ff148e013892e854f37d0d75f06aae18be40220f1d7c. 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/QZMEQ2038685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57731371e5d456e31a55c00cd6533cd7a485bd17eb4803cb212694dcb9a0cf13. 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/QZNWT2021353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9efceccb6271acbaead7d17fde62c8491fa3f949079ac90ac548c71dce104f6. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZDA62184124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f63b04841f0d815422f559f87e20a84f8fed2834562c98ba13a744c1cc8faa. 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/QZHN52170059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffbbc6c9778eca929a34658b31c4e0eadaefe57e7656cb462a8ebe508015c93. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:55:43Z), 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/QZHN52199532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f02eb34aa72a9f81339bf8acd3237a24196a37e8409e392678f299016d3e26. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHNB2153592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0f85e6cb8e67e6ae248eec030cd0a883f7033ab4d643b20e540309bdc64881. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZK6J2168785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db06f19d85dbd3740ea7c644702196f7ac9515a658acafb6c6368ae9d9e6d9a. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:37:46Z), 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/QZK6J2168787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1c5d2a065e39bd17539bdeebb5f7e33731af68f5827fc38a60add214799c4f. 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/QZK6J2168788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f68d8ffcd5d168b6a9f5a4b91e0d2388dbfd62b6f9db6bc4a30a376acf3d4c. 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/QZNWR2102061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06aad117ae775a0c04f3d3fa5c7ad3f00d228c7418fc55d4870342d8cf4ef9c3. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ARJA05222904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85ee68d0657cbb400e719c846e92350c425a2ff4e48cbdc122dfc9bdac9b7b6. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:02Z), 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/ARJA05232601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284738812064ce2173d2cc89d9f1dde7e0bfe58fd4dabdc0cc72a7644371c0cb. 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/ARJA05230204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2f9816111627fff4cb829c59deec91c5e618ec7e288c58e29e6aa8b9953569. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ARJA05236007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502c3f70dafa5f81fb5f31d65158987cf486d7b603bb366b3ad8dc14d8e38638. 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/ARJA05231211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b06a1855eafd434c2527be01c5f5003937d61062c1e3e20de7facb42e6d127. 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/ARJA05242304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58204ff400d76c2450ab4e21f094aba91bad92d5cde670b8d8903b403d691dd3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:34:31Z), 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/QZMEP2589872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff9e0dff5d3127ed7e130754fbf025a38027dda57bd6749a471b11b662230cf. 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/QZPLR2547962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8566a2117d20fc6f316ba3cd7c78cdd7d61c516a86133c61ad9a28ad3f19d5ae. 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/QZRP42564706.