is a Japanese term that is used in many Japanese martial arts as an honorific title for expert or senior instructors. It can be translated as "master instructor". The use of the term is specific to
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 0x5331ce37d3b07a2e47cae9dd59b0f7ff34fe8a093d5f85bff233f192cbc7c08a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e694ffb-b956-47a9-9ee6-938b1151cca4.json and https://artists.proofprofile.net/proofs/artist/5e694ffb-b956-47a9-9ee6-938b1151cca4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).