is the fourth most common Japanese surname. It is typically written with the kanji for . Less common variants include , , , , and . People with the surname , Japanese musician formerly known as Bok
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 0xaf61b25bb05c9444f5f2961d500d0bab9a7bc348f2a27589bab68a39086f6c8e. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18a15ced-bc3d-4d33-8f91-c34917950fe0.json and https://artists.proofprofile.net/proofs/artist/18a15ced-bc3d-4d33-8f91-c34917950fe0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).