Manno is a municipality in the district of Lugano in the canton of Ticino in Switzerland. History Manno is first mentioned in 1184. In 1298, the Bishop of Como owned estates in the village. In 1335
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 0x351fd1fcfadb68cd350d64ab42b500ab3510fccc4bf2e6f60dddd7f6331d7a18. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcd339b0-88d6-4e75-915d-904c2e7dce7f.json and https://artists.proofprofile.net/proofs/artist/dcd339b0-88d6-4e75-915d-904c2e7dce7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).