LGZ or lgz may refer to: LGZ, the IATA code for Shannan Lhünzê Airport, Tibet, China lgz, the ISO 639-3 code for Gendza language, Democratic Republic of the Congo
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 0x0162ef074bd8e6522b4e4d8648d2a3e4a7300ab41eb9eb5acfd11736f4bd2c4a. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a2c1f11-3bce-463c-a8ce-4dbfd7262f39.json and https://artists.proofprofile.net/proofs/artist/0a2c1f11-3bce-463c-a8ce-4dbfd7262f39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).