Aeropuerto may refer to: Aeropuerto (Madrid), a ward in Spain Aeropuerto T1-T2-T3 (Madrid Metro), a station serving the Terminal 2 of the Madrid-Barajas Airport Aeropuerto T4 (Madrid Metro), a sta
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 0x798e282dcb90b07d81e200f5de23594778fcd82f8a0e7360fe8113a06cba92e4. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29ab48be-ad47-4e85-952e-a9cdd0c84862.json and https://artists.proofprofile.net/proofs/artist/29ab48be-ad47-4e85-952e-a9cdd0c84862.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).