is a Japanese football player. He plays for Fujieda MYFC. Career Takuya Ohata joined J1 League club Júbilo Iwata in 2009. In 2011, he entered Juntendo University. In 2015, he joined Japan Football L
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 0x28ffc3e59b2e2f56ee5a7023f0300505dd3c6aa701313b5abaa7decab9d90842. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28777baf-ae6c-4f5c-a06e-f5b91a7af140.json and https://artists.proofprofile.net/proofs/artist/28777baf-ae6c-4f5c-a06e-f5b91a7af140.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.