Adolfo "Fito" Cabrales Mato (; born 6 October 1966) is a Spanish musician. He has been singer and guitarist of the bands Platero y Tú, Extrechinato y Tú and his current band Fito & Fitipaldis. As of O
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748b1896fd02e04b063ab5b5b921a5d4123227b141b1adb009fe0ce2f6bf94d9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d208d286-acf2-443d-b819-9ab0e0fd803f.json and https://artists.proofprofile.net/proofs/artist/d208d286-acf2-443d-b819-9ab0e0fd803f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sixteen (feat. Tarque & Fito Y Fitipaldis)
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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fade34be12a6a67fb83a20c3817dfaac0589a5e78c7d46bf0c00bd04f3d1cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5021300884.
En Nombre de la Vida (with Fito Cabrales & Amparo Sánchez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c22f4388ebf4a7163e5e58209ada6c82d0f416770b8c405ab8798996ef2474c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES5021600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913fd097d774730aa92f29664d07d7b6c32de383d8a60f8bb63e68a137389032. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES5151700344.
Y Nos Dieron Las Diez (feat. Travis Birds & Zahara) - Tributo a Sabina
Tributo a Sabina. Ni Tan Joven Ni Tan Viejo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933e18753b308178d6940bc83db8304013711a47c10f78658945ac561145ab90. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5021901596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b4fe191fc51836e2c7ca0645bc0c789753a3ccff5273040600f24a436f2114. 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/ES5151200666.