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 0x63e43c95e158fc42de4cac5c44e1ab6552cff3c2bc82f5461927d680c342d597. 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/8d57409b-e02d-4df3-99ea-2b6471560beb.json and https://artists.proofprofile.net/proofs/artist/8d57409b-e02d-4df3-99ea-2b6471560beb.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 0x0bb5130a3fc1d1db8235119242ce377e75a160d7b289c02fd8fa1f02d093bc44. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJY2437942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa853bb372bcf086b3a382c917c77b673d16dbf99f697ba1ee0e6e29f5eee5f1d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJW2486572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4478a27dd7fe31f0e7cccb3e6330b4d42511fccddeb4ef9a8e162bc12fd20211. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJV2416390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d92442384f10a4dd6141ab62038b258b85d971bab980061cef2a53692eda29. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHNC2442073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e4b426b4ee7dba7263ab774ce715fbe4ba8f6b4da27cb7737e0dc53c052c2e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SGB502462230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917c7be98527be92b444ba83106c322cfc718af69784a58bdc23910824231f6b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SGB502459124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfda02220c17b411d94410e38eaf99dc92cdff72ddd43d64fcebde6e83ff4cdd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZZ972414818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b282b75415605765d4617ad0e0f8238339f09d59c70481a94d37e6d8e1d9986. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZZ972499906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6711692495cc76ffa8181bdc23c96d73035ac106c07ed662e5558678ed8909a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ972499907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d08db16258ed9292388d0d479853f5138a8b006c5518d21b8ff22b78870399. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZZ972499905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524b156d80404ff063dcb07a13779d3a446dc162a233befa047a99e740bcbd2b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ972499908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ef6047a06be2f3184c5b562d37f6e07c24e463b5b7a54ec10d19cbff0cdb6d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZZ972499880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876d72689addcf6b9719e095b7fde4339d57f12b6ff206082ff0821bc69a532f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ972499877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c37eb4922b235fd2d899d8a1eab0edefc08dd8f8a83b6ce68e547940eb7ae8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ972499879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19aaed797ed3556901103a489dd9873810a8eb6b4b8004d3f097d67ce20860f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZZ972499881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7142c6f5081a6668c0bd7c385d84800dbdd42c8288123ee8b3d121f4ade0ddf9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ972499904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad2da6913af8fb441daa3711558a7662f3e0da94bc5cdca2b26fa4966a89512. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ972499878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3126f6f0b94dea2c1bcb7931a14941fcee6fc3f58a71e0c2138357a41230b95a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZW9K2312094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717687aaee9f2deed8bf6e15d1e827b9c631e31866bfad3eba699d6e51489e33. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJZ2333353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96acd8c9ea812500a87a115309098e48c53427fdcd0bc93ace85ecac67e563e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US7VG2322087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b39d905da44b830bd20568926e93c4443de0a29e10c8ace3bed03915f4b76dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7VG2338390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f49a5598d1ab9e6d48f7ed4d3dbefcaca2ab54257b936c44bf3e83f2974e307. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7VG2367012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75283690cfd7076189a9f75e3f634d7f705d3bca5c2dc1b370a995c0424c0ea4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7VG2367009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff957e1a1e00d2b7bf03008a80db6da9495f7c710dae7961cc452db417575a79. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7VG2367008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3331cc27eb31bffb03d063bcb41758ad0f62b73fcdb712a9a91a360fac72725. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USANG2444682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09c87149a12d70d4078868b2c93e745198ff971a6c3883fb90dd2b608d911f3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLM2555699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30e22425aba78c7e9d6c6358eb016abb3edb541cd72c4d55719e531bcdb0d1e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA62554286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e20881c34e3ade0797634b02b6606fea663ed3bb401a1ba3587b7b22e11bde. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIO2477366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f66e5fc979f124d88c08d021e053cca4c2e05692e537d64232499e271a84b79. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QT3EZ2469674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b8dc5e51f9766aea18383e3680a0ec0dc7135e22e9b352543cd283e615dd9f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QT3F22408239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd514588a0f97988a9fd01064c46964de79e316c285bc9ce1acd9b64957eec6a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWFE2428285.