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 0x15b204ceb9ceadd23f6e77f0c2ca378bbebbb031051a07f7fb71a95d5d8ddaf1. 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/910e01cf-f8e4-47eb-8a61-8f564c104e36.json and https://artists.proofprofile.net/proofs/artist/910e01cf-f8e4-47eb-8a61-8f564c104e36.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 0xe6d929ad76b67933110f91e4825bbe677d6d3ee208439a190a535a36de45a126. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/DEGH31600041.
Thunder in Paradise - DJ Scot Project Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f6821de977d9f0f260e468adec335b980481f9ded34c2244c3228e7f9728b2. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DEGH31600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2574b70074ca114dbf29c882882ec639738a72feb7bc5a69a36a9dbc763ab7b2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEGH31600002.
Take This Sound (Out of My Head) - Radio Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4ed8b4089c1cd6bdc527766e1415de49303b442a2145902a380f635f46eb83. 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/DEGH31600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df3777adafcd2d5ff400eeb13a7b90570d894ab3004b37dfc6600377e98a430. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEGH31600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e105917b72412f5e49c66f757e2afd7850eee9ec77b88cb56f3554febbf068a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEGH31600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d75cab65e41ed5602eaaee9396e7588f9ce23bf4738ab624bc5c0987e04194. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DEGH31600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c59d39af5f88613c6d2e847da2d48a5e2e41d655f44e13bf81cf5f0c194224b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEGH31600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc02c83b11df3754b13c949eefcb814e24fcb4adc59acea3f6a5b6ff78843d9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLA800200022.