Hanno may refer to: People Hanno (given name) Hanunu (8th century BC), Philistine king previously rendered by scholars as "Hanno" Hanno (, ; , Hannōn), common Carthaginian name Hanno the Naviga
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 0xe5959a4083f05f1427f9d6816960dc0e3ffddeee613e30b07b9e298cfa3f4109. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c16e0d9-92da-4e42-b4ae-60db8ee08809.json and https://artists.proofprofile.net/proofs/artist/5c16e0d9-92da-4e42-b4ae-60db8ee08809.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).