Bnz, BNZ, bnz or variant, may refer to: Bank of New Zealand Aon Centre (Wellington), formerly BNZ Centre Beezen language (ISO 639 language code: bnz) Bonza, ICAO code for Australian airline Barn
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 0xd9d941dafb04f2d6fd667fa9dd9056495b7c3d91f1a6a649c2078486c6dd5bd8. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24d49283-4a7d-4f8e-9df8-3c361ef0746c.json and https://artists.proofprofile.net/proofs/artist/24d49283-4a7d-4f8e-9df8-3c361ef0746c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).