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 0x79fcd0fe7c0f08aa7fe880fe920047430f8981f2911592883ff0b1aae2f36c0e. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9da3194b-d808-4a4c-9c58-910a9d7a6aec.json and https://artists.proofprofile.net/proofs/artist/9da3194b-d808-4a4c-9c58-910a9d7a6aec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Filderes y Su Tributo a la Cumbia Peruana, Vol. 2
Filderes y Su Tributo a la Cumbia Peruana, Vol.1
Los Filderes y Su Tributo a la Cumbia Clasica de los 70'S (Conciertos Completos, Vol. 1, 2 y 3) [En Vivo]