Alta Velocidad Española (AVE) is a high-speed rail service operated by Renfe, the Spanish State railway company. The first AVE service was inaugurated in 1992, with the introduction of the first Spani
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 0x2d033ee4ae3ce83c9f10df5cd5f710bd2707c90c45750e649f9b8994380e1047. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e25d68b-edfb-4ba4-a36b-31d61a5f3d76.json and https://artists.proofprofile.net/proofs/artist/8e25d68b-edfb-4ba4-a36b-31d61a5f3d76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).