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 0xee68c9b16093a344352a0ec7637f268688c474afb43180e4a337066db9adda7f. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a77f202-853e-4480-b31b-d1ebdb8e2f42.json and https://artists.proofprofile.net/proofs/artist/5a77f202-853e-4480-b31b-d1ebdb8e2f42.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 0x35866c99dda7cb99e6e1903133c678f7ea1bdb55af89755c0201b5d8c7eb4bb2. 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/AEA3A2559591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a286310d699c0370dad5293a227243d6c7f45d14d0a9de95402682aa38104ff. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/AEA3A2526801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac4a7fb7d62e2b66961d347a9a5ddb147c06411f10a0933a8f706de840849e2. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/AEA3A2528227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6473adc94797b5fe408300718a32a12f8000c9cb7909e9f4f31a119e3eb0ab9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/AEA3A2547787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a3dae844149f0b139a4ea325558ffc6e0c1d9f68f490e9adf552047a28bff0. 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/AEA3A2534677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf430f87eff66d977f7eed3c276f5ebfed12e0c2c3226459e8cf20017646e59dd. 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/AEA3A2536357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7221735e86ccc0282a5c29c2ca2912b05072371f2a33534d96883218622edcf2. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/AEA3A2549646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0de8dd66afec91e07166e21b4f778c27b24ca79650a669013ac611f3cca6037. 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/AEA3A2563800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2e1eae52ac2a3f93056b9d15efa0f03c96ee9206017bb5615fd7c4d0e38220. 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/AEA3A2523768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d39f2ddf3e196f2a6cb61a59b764706690edbfddf15ea40515c4408573fcdbb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:40:42Z), 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/AEA3A2543505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4db6a110123cf8e147e379bd0d99cae0924be81b61495d9b19de63a6aa5d431. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/AEA3A2558930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa857f6d28673b94fe8478bc2a5a97e87e1d8fb7170af274181e9044541ab015. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/AEA3A2560976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022515d59a742f1817dcca343dda4a2aff933982677c05d1e34e623e5f940ad2. 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/AEA3A2567423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff79c8577285038bac506c869e44b94fad02a01ecd6fee4c65b63e11725f6d03. 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/AEA3A2559460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f937e6c47a5ee3b975eee4f2b45cd418e4b640749c9ed8f157d1fc6e5aa381c. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:08:58Z), 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/GXBAV2008481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bf8f8307cf7eae018d3b122657a414b149f817b50366a546e8aaf0a2fb73a8. 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/GXBAV2007256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2a7a63863f60376f6b292a3f03a321db570b648307f251ca3cf6d84aeb0669. 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/GXBAV2098792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040c1466f35336723ac57fcf1a90b4262e4277b6e77ec3a986287cc15426c897. 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/GXBAV2025003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061e2dcd1afff021cbd21ad3092518a9a2ac0a3189204474590d61a5e2d0138a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GXBAV2093994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bb31d20f7dddbfaf220cc82d3d133cc708a2b3269988d9b6d1228599a05bf2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GXBAV2024581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e2502cfa9d07322eaffa0ed46ad04dcd21eb90a67ea2548166814f952695a9. 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/GXBAV2040946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d612dba401a5931546853ce021d79a402934cb25e373c01449fdf1e9731fc0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:24:12Z), 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/GXBAV2043642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0917d9149f176dc0555e4620422002b58551b633b1b0eefcc0bdfc6eff5b0e3e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GXBAV2098749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd407174fab216ada38f6bea4715f017612bc0bbbc848a3c29805fb7a013e41. 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/GXBAV2053948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69732be3051de031e61202fb725fed482a523802388845364c32a401f90b141e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GXBAV2026504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b7d3bfba6083413377c361b3b97fc8fed099ccd77fe13802ba188942669398. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:28:02Z), 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/GXBAV2017976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81b0c5344aa5a44bfceaf2636776024d64fb9dfcb9ccac57fc3d557d38bd6e3. 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/GXBAV2012748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04477fddcfd8854da06fbdf75846305dc3535a0b5f1eacc05ce928a0fe430f7f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GXBAV2038763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dac2d11ce418ae0dbf773d611bf11921fb5ca5dc72b61103082db1cee49a63b. 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/GXBAV2024028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6777be6cfae070f03ebe624cfe49ef9a4603421657d7a8a17ff10115369028. 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/GXBAV2021964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc90460a91a75006fd3d18157864dddf1ee4e961a0d855f1de483c5f11f6e0b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:37:56Z), 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/GXBAV2044895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4f3592609749b3a11ad7ea23ba1e6d0035ba9d9ed30e65d6db5183c247deca. 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/GXBAV2015211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c26eff280e9f363d30a4cf3ce5e52142c8714a671822d5cfe10e7f9704c8885. 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/GXBAV2038366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5015da29b4d9dd7bcfabacfe06d4251d71168e9726203b8fb57b234c5acd45da. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:34:16Z), 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/GXBAV2078635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39357ab047dbac4c2dcc86c96e7a6cc254196e88e42495a6cc83551c814b316a. 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/GXBAV2043426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd5e545cc808cf67f3f060b87cb823599cd72f2bdffc9aa4ac39fb6505cee8d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GXBAV2060258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1700972c72781eed38dbda51ed5dfe30cc1fbbb659eb562e57bfcc6d3f4119bc. 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/GXBAV2049354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9cd792ef0269c3620f5b3acd3a478c06daf9c5729535bc4900d4ab7ac2ced9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXBAV2012560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a733e031f29adf310909bc4288fb25a8195a40aed640eea7a1e2ec12d99542. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GXBAV2012511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dc8573de3ce6acaca3615e364507611fce17ddba12278ffc79cfef7306c121. 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/QT5M22525057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb148f54e6fd14e547ba15554d8f3e96ec118a17e5b0bb076fead6690b1bf29bf. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QT5M22589748.