, known professionally as Cocomi, is a Japanese model and flutist. Personal life Cocomi Kimura was born on May 1, 2001, in Tokyo, Japan. She is the elder daughter of actor Takuya Kimura and singer
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 0x6b680c5fece9e820ba223c021c5a8abb3f26494795312ce9236db33c4744507d. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b243fb60-6d59-4a5b-8a73-b6eee971fb28.json and https://artists.proofprofile.net/proofs/artist/b243fb60-6d59-4a5b-8a73-b6eee971fb28.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).