Luca Urbani (born 11 May 1957 in Rome) is a former ASI astronaut and was assigned as an alternate payload specialist for mission STS-78. Personal Born in Rome, Italy. He now resides in Rieti, Italy.
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 0xb6f09fa4606ede42b981c502396d8caece3d5788f482d0a5a29cdf1ed1f73e24. 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/810ef34f-007d-4770-8304-6343a0a09e06.json and https://artists.proofprofile.net/proofs/artist/810ef34f-007d-4770-8304-6343a0a09e06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Catodico praticante (Extended deluxe edition)
Affinità - divergenze fra il compagno Togliatti e noi del conseguimento della maggiore età