Kookaburras (pronounced ) are terrestrial tree kingfishers of the genus Dacelo native to Australia and New Guinea, which grow to between in length and weigh around . The name is a loanword from Wirad
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fa2fa658e5f867ad624343a93684444015ece8ee2be4eb6b348b7f07fd5e91. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bef5a85c-b96c-4e35-917e-6ddf2181c94d.json and https://artists.proofprofile.net/proofs/artist/bef5a85c-b96c-4e35-917e-6ddf2181c94d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).