ANZ may refer to: Banks ANZ (bank), Australia and New Zealand Banking Group Limited, the fourth-largest bank in Australia ANZ Bank New Zealand, the largest bank in New Zealand ANZ Fiji, one of th
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 0x376431d04d73946f939b3c9181d9e885924c56157182a1e94587af3c99e53537. Chain 2 (Bitcoin): anchored in block 953936 (2026-06-16T11:24:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f7ac2b3-24db-434e-afb4-f650c0f79e41.json and https://artists.proofprofile.net/proofs/artist/1f7ac2b3-24db-434e-afb4-f650c0f79e41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).