Ruino is a comune (municipality) in the Province of Pavia in the Italian region Lombardy, located about 60 km south of Milan and about 30 km southeast of Pavia. The center of the municipality is the
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 0xad7b862cf3bc7faebd17107f6068a1fd5fca0b14097a11d0d9a17c62a1f4cc5c. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96dc3922-59c7-4031-b746-b6ff3e1364d3.json and https://artists.proofprofile.net/proofs/artist/96dc3922-59c7-4031-b746-b6ff3e1364d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).