Fano () is a coastal city and comune of the province of Pesaro and Urbino in the Marche region of Italy located southeast of Pesaro at the point where the Via Flaminia reaches the Adriatic Sea. As of
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 0x51804cd800da9dab7f3f35abcd1dee121f12cc1ab7d31e6f17f539503d6cf436. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa903ca3-3f39-4cf8-b1fa-6ab453bb8d64.json and https://artists.proofprofile.net/proofs/artist/fa903ca3-3f39-4cf8-b1fa-6ab453bb8d64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).