Kata is a Japanese word (型 or 形) meaning 'form'. It refers to a detailed choreographed pattern of martial arts movements. It can also be reviewed within groups and in unison when training. It is prac
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 0x0c3c68eb6504187503e18cd4f543768bc42580fb84731a44f2f11c0cf7dbd449. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85527b35-89e1-4ceb-8737-4336e10f978d.json and https://artists.proofprofile.net/proofs/artist/85527b35-89e1-4ceb-8737-4336e10f978d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).