A taua is a war party in the tradition of the Māori, the indigenous people of New Zealand. Contemporary knowledge of taua is gleaned from missionary observations and writings during the Musket Wars of
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 0xa4806d4b9bdc26d1ff6f423a54a24d2cc9f6f45d0422e552c34a66d2332ad5f3. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f667944-cfae-4296-9339-3d6bd0882509.json and https://artists.proofprofile.net/proofs/artist/2f667944-cfae-4296-9339-3d6bd0882509.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).