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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66265ae8f187cd1846e9001eafc0465b305efa140993ccb1ec24ea91a8117894. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/291881f2-0cc8-4120-aa8f-7992d76a6137.json and https://artists.proofprofile.net/proofs/artist/291881f2-0cc8-4120-aa8f-7992d76a6137.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nostalgia Cubana: Live at NDR Kultur Hamburg
Hermosa Habana (feat. Isamara Hernández)