1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x40ad3c34cde9748f3e78038b519a227a0646b8ce86cff9eeca0f7091c537c583. 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/62144b26-aa93-4edd-995b-88962a6e9b74.json and https://artists.proofprofile.net/proofs/artist/62144b26-aa93-4edd-995b-88962a6e9b74.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 → block OTSBitcoinBlock must exist at that height 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 0x70aa51d1460cb7f7ac7ece86019829e83b224b0e20e2e681ccd7f0347aabfc04. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:15:11Z), 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/COF012500167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fa66b578203c6e0edd534b3ecb11cab1eff6b4d7fc079f7da1410963d1c852. 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/COF017800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13c23d438fcfad59628a1246e7387da1370402bc0d0c2cd3bfd17a696b4e402. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/COF018500448.
Locuras de Lisandro Meza: Te Lo Vi / la Perra / el Porrocumbé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94c2e8c7e1e2b9af571dc90931a37c3b45971bba518d611fc1226df3b66b929. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/COF018200513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bffe942378400e4aad942101de7a1266342a2d0f2ef417ed942cd422bd425bb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/COF018200521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4a7defe277b24dcec066318e4bf2e00f6bd87f51cf1e0f92566711b5ce334e. 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/COF019501266.
Palenque Palenque: Champeta Criolla & Afro Roots in Colombia 1975-91