Viz or VIZ may refer to: Aerovis Airlines (ICAO: VIZ), a cargo airline based in Kyiv, Ukraine Viz., a synonym for “namely” Viz (comics), a British adult comic magazine Viz: The Game, a computer game
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 0xf448cd2dc7ae15ef13e6ef57c05ec3e85e02092141a251106b79f155fcc7fca8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4932897f-aed3-4c8a-896a-c7f9ce1a9b8a.json and https://artists.proofprofile.net/proofs/artist/4932897f-aed3-4c8a-896a-c7f9ce1a9b8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).