Qantas Airways Limited ( ), doing business as QANTAS or Qantas, is the flag carrier of Australia, and the largest airline by fleet size, international flights, and international destinations in Oceani
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 0xec1b849c6a183ea11003e003983cb730038c991fa92f1caf806f113d4882123e. Chain 2 (Bitcoin): anchored in block 953662 (2026-06-14T17:28:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56784e7b-3b42-43a7-846d-8e48cf788780.json and https://artists.proofprofile.net/proofs/artist/56784e7b-3b42-43a7-846d-8e48cf788780.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.