Milan () is the regional capital of Lombardy, in northern Italy, and the seat of the Metropolitan City of Milan. It is the second-most populous city in Italy after Rome, with a population of 1.36 mill
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6764251d415f247e32576dd72078185b1fa140ee8911d3eacadd4795438afc. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c097c00-6b87-4ac4-8693-9bb15a5f074e.json and https://artists.proofprofile.net/proofs/artist/7c097c00-6b87-4ac4-8693-9bb15a5f074e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).