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 0xec6a12c21f453791b943a24b5dc9f33de924d1723a3a0819848c4de09cfdfe16. 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/c6cd2f76-c6bb-4271-9708-87b60888dd79.json and https://artists.proofprofile.net/proofs/artist/c6cd2f76-c6bb-4271-9708-87b60888dd79.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 0x3d13db358f9db77d757a5de63f2b7fb41fe2b946cc6b249e064529ffaad5d36e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJF2594286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0cc9f556c684edcc9ccf438c39de32c0ddca9666311adbb338fd8b55558359. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJF2594294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db1750c8ab14e26c1cb6b195d13101d2efcd5ce1262732c113a1dd7931d8ae8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJF2594305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57404431ea6db206b519a3d4a2c5c354452cd3b1e98a221279d8ebe2786c15bd. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:11:25Z), 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/TCAJF2594313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b21e3cbaf38f90cb135fb2b25f6d53322f4f40903980fd46a526d86e3982b8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAJF2594325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b44c08549e0f2b1142d7b96f5d094f96fc7caa1bb618812b255fef912e405b3. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAJF2594330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0965c6b772af291b80d4437436761ad571406e6c84315c752a2967a7b8c8616c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:14Z), 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/TCAJF2594335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3a48f79ff33c17dbbf1933ad4b33aef736ee7056e350164167644684375742. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAJK2508268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7d8aca2d667a56b274962ba655873a5a2ebe32be89df357ab5892e10935d56. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:50:10Z), 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/TCAJK2508273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365c4b27dbd790de0162c5454bb1d8325849854db86f25abb0604b9c0366e5b1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCAJK2508280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d7fdf54223b68fbd2a1790bcc4c985077d30f4d2c3064ca6070a2b10edf928. 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/TCAJL2508286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704e9dba26b9ae898c84fc152de143395ea58bb114f6988241aeb53b9a5c18db. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAJK2508301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafc6fa29d826e2e63034a9ed32eeb4db9da8c38c3461015d40b2ac93e30432f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJK2508305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e5adaa0d6364b26e3e383c4df314b0d22c29ccdf5c5deed1b11c752807acce. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJK2508312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7672fd312c2c49c7a808095465e21abf496a249caee50238fd414828fff6d3. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCAJS2508027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943f6924f66518a33ab8eea7ffc364a2ce03bdf6529231680d598a5750961056. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCAJS2508031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1f21ab29beedd48d0c19835a3d9c38f98989424dbeb0dbb320be65bfea4e50. 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/TCAJS2508036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e7ca26f91ce3a120d27fbd5a243da3bfa6d9c1912a9a837c489bed69ce6889. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:08:24Z), 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/TCAJS2508042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eec45a33bb081375491c46ee35b622c0562ae4cca06c4511804707b31d7233f. 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/TCAJS2508059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b9397da5a6aea84a09d14e2a7e5a34b45f4e072cacbfcc4f13f733ca80d6f1. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCAJS2508067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b402dc26334cd03fd8e1f908ed58334dee9eb40d8c11c04ee32272c6758e12. 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/TCAJS2508072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d97b152adadad708a66c896af08c4573e0f0c736ce88bd22dc73881247deb83. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/TCAJS2508077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78778a3ee1cb998fd5d7eeb1a5640caa47724264bbe3c5f2986e953b88312568. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCAJT2508101.