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 0x7eac575acc30881f4a32562ea610ca05a6b6932a3bfb50d8994cbe473825fb94. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84500608-7d3d-43ad-a69f-6f870ff4fad4.json and https://artists.proofprofile.net/proofs/artist/84500608-7d3d-43ad-a69f-6f870ff4fad4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Son, Bolero y Montuno Con Sabor a Quimbombó
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 0x2d56c783b82acb0d8cc980fd7be71f9d2e6ebe6945ba874edf8a0b691baecf8b. 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/QM6N21453827.
Perlas Cubanas: Chappottin y Sus Estrellas
The Real Cuban Music - Chappottín y Sus Estrellas (Remasterizado)
Convergencia (with Miguelito Cuní & Pablo Milanés) - Remasterizado
Cimarrón Ya Está en el Monte - Remasterizado
Afro Cuban Roots Presents Cuba's Big Bands
Tu Falso Sentir (with Miguelito Cuní) - Remasterizado
The Real Cuban Music - Mister Bolero (Remasterizado)