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 0x39d60e34153dc5aaea7b557b966e975849702a0b9feb28221f998b09dfd743b4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11570dd2-e959-47b6-aa76-ef957d2c8054.json and https://artists.proofprofile.net/proofs/artist/11570dd2-e959-47b6-aa76-ef957d2c8054.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 0xb1420a4405e62de2027aadc13662cb6094aaa5c475925297c02dbc9adf926b47. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:43Z), 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/US4R30602324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760499084ad5c033314fdb7ef7fbd37939ce5396c65971ec100f5075dd577965. 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/US4R30602299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4105011d1fb5a4fc15822de39df291f28f79aa4f698cc2596a29336322ff65b5. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/US4R30602303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04db41d1504b611559260e164f48560b3b959fae2d877117eeb09999ca4dc081. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US4R30602752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f54db6297654f5eeb5bab4626184b3d8044eef17808b03f7c3969973b84623. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/US4R30602754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baf9d1e44c17e579506eafd1070524c14d2e63e0c83567c1f44148d081c79e2. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/US4R30602755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d73915ea83fd6991b8910a60a6e6f339dc0a6af57b038b5cf161d73a4555358. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/US4R30602757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8de070912921f420ba7dd198cb83ffde52e862b8ccbabef2140a5a472b0ddf1. 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/USKHG0800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6492c5d819ffc7b542df271184efcdd3e01ec578b1909e4dad50cd7f7b158115. 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/USKHG0800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20450d568619cb2e552a2c3b215fe6abd638e25d3fd375202ff979939678edb6. 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/USKHG0800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59b1f7caf48e54fc58ababa908f1d2ed708073369301d4996d61c97ea0fb44e. 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/USKHG0800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0de93398bef14182da5d6cb33dde4b53541ac5ec65fb43b8bd6f32218a353c1. 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/USKHG0800035.
I Still Haven't Found What I'm Looking For
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a71708175756a73bce714b6748476c55b68745511b2e2ff1f8cc1135fe375c1. 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/ES6101800982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26fb4d776020f598b7dd4c1fcf80b27ccc4c392b3239002f1a35c7e60bf4a9a. 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/ES6101800983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e5bfcd849a75f72263c42c1cafa5e0d536d458987bfbf97118f642a37fc7e4. 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/USNK50800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9f30be743f3ca49b0b7cca1de69ea90c9cc5879adae32fe877673e9d4fca2f. 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/USNK50800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64cf6d2ea01d21f3639d36f16c0e116a8da09782a247c7fcebc80bffa74a028. 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/USNK50800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa251a1f33af25841a8aa8c640e7a329db9d5daee2849aa50414967e7c5b6adae. 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/USNK50800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bde0f64548a42b06830819dfce1d15880792fec0cd792cf82ba049b61b58717. 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/USNK50800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e797deb8f909f91e595e683a39db014dba9dfb17ae1e053c7e28aab0170cf7. 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/USNK50800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2e473395ee0bffc372556de70c81ff978c62a3d0d163adeaa148ded35f99b6. 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/USNK50800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a1a268288f348d8cf91fca27b9f979e50f720017451304b62a0e1385639ab2. 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/USNK50800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde07813502a85a1ea4803759420e8fbb1ef8e4a106293f2fbd2e9337dd000083. 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/USNK50800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0f394561de278aa63acd0d85a5cb4ad136d762e4a7df3ca16407726b77a3d1. 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/USKHG0700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5530102f139d8d118041150cfce643728db6967f79fbc9a5caca0f6037b4f02. 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/USKHG0700011.