Santa Justa Klan was a Spanish band that emerged from the TV show Los Serrano. It was formed by several of the actors in the series: Víctor Elías, Natalia Sánchez, Adrián Rodríguez and Andrés de la Cr
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 0xd353bb809fe73f2c6cd41f6b6bb0e5aaeb3a1cd5af283e5b637f5de8490558c5. Chain 2 (Bitcoin): anchored in block 953980 (2026-06-16T17:16:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c47f252-0049-4045-9458-ba942b1b45fe.json and https://artists.proofprofile.net/proofs/artist/2c47f252-0049-4045-9458-ba942b1b45fe.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.