Muy Deficiente is the third studio album by Spanish rock band Platero y Tú. It was produced by Platero y Tú and published by DRO on 12 June 1992. Track listing Personnel Fito Cabrales: Vocals and
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 0x959c0f7a1aff25761c66beaec73e84e286915ad4d91d508ce98250ce233f467c. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a610b24-7474-4531-ac44-918008194673.json and https://artists.proofprofile.net/proofs/artist/1a610b24-7474-4531-ac44-918008194673.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).