Davide Calgaro (born 18 August 2000) is an Italian actor and comedian. He is best known for his roles in the Netflix comedy-drama films Under the Riccione Sun (2020) and Under the Amalfi Sun (2022).
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 0xd4edf6ba53ff72c95de5ca72696c6f3229083b8d8cd5058f2864bcfcb950accf. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb7c2b42-6f85-45d2-a0b2-113275841f0a.json and https://artists.proofprofile.net/proofs/artist/fb7c2b42-6f85-45d2-a0b2-113275841f0a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).