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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dd7e02eaad758738fc52132e4dd3e9b27a358417e0221b6d6d6bb31783ef40. 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/c509794d-70ef-449d-b8ed-54fcef2533b9.json and https://artists.proofprofile.net/proofs/artist/c509794d-70ef-449d-b8ed-54fcef2533b9.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e6b176026dd3481afc3e12a4871e6c7df68e3e183feab223f68f1424d1beb9. 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/FR6F32200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2686df4d69ee8565adc31221e1ab328134b39c8be58d0ed2cf319059040f939a. 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/FR6F32202090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157a64d6e373fd5d2210eb9ec8043c9f7e450aab603a40fde64ac5b206568140. 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/FR6F32202110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dadf48171a3adf6e415241f25674f9a115f727bdef2927e810d354bdb33a6a. 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/FR6F32202120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52bbb6efeea84ea79748ee2096374a8d476b3c1bfdc49360d8f30ae42df86d6. 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/FR6F31902690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfa1166a43fe7bac7b866f857e267994fabc7b9b5e55d11b81c52cd4e8f8bc4. 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/FR6F31505650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8c27dd4be4105b8f856ecc796947c2c94d037c33cb56946b85eb7b089cc6e1. 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/FR6F31505620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68be8c16821d9ebfc3a3742b9e4339d6d3b4afc970255da09e6aa3688560e4c. 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/FR6F31505660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922b14c465783846e7524b836ae0b480ccd9501554d5ede0cc10e8f663d08673. 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/FR6F31505700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05fc31e53dbd941e97d7f575224ca7f8d5697bfb120e8eea905b35f2c75719b. 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/FR6F31505680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8dfa8991c75316be7574a5a00ccde037bf615359c208398b38441fccaf0f0a. 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/FR6F31300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678af13b1208b232730d244344b8136f21b1fba35f09c2a14c3a4352cadbae70. 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/FR6F31300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e59517a058b6007eaa8084351dea30b3e4f6f85314b663894ae668e86e9ca1c. 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/FR6F31300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe9a60b20b58efee17bef8c4d5206b251ca73139c4abd90f7ab7448d62c83ed. 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/FR6F31300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecfea8a981ac8b7319a9c31d091471a44913cba13f439587f38fbe71060b298. 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/FR6F31000330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8711214204029d4c7fd72d4edb2e2c016ae93a51bd3643c620c78bf59b6635af. 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/FR40F0600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdcc1d074d22ad6a7acb621a9dfe784feaadc310c89b9f13852fd2f1c52c72c. 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/FR30T0400001.
Ô Le Coeur (We Are Not Machines Remix by Brett Bullion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64b7d682c6b191decd984475abfca61fd6f7c19c496ee3bd3aef4b35a2f9665. 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/FR4EO2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ec3eafa36dfc42609c6289ab891d1edbf5ef604d32ba32142bc7f37ba20100. 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/FR6F31600490.
Le mot juste (le beau geste) [avec Camélia Jordana]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569d27b23939e4ed6951c682e4991b2dbbebc1f6282285ca97d6f30532afbae3. 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/FR6F31600470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64b7d682c6b191decd984475abfca61fd6f7c19c496ee3bd3aef4b35a2f9665. 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/FR4EO2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2a4466546f6eb00a6268076174492e4995d950b753f610e60dccdd145b8bae. 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/FR6P12100470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32315967eccfb6eb127bafbbd2c020f6e2ddb58a5839022a19f7bb8114e115b1. 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/FR7LT1700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247eb408b21e8a1367b4d8b82c1109489b6deca850c3dd4f0c55b4fb9a90c15e. 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/FRP102000100.