Nakaya (written: 中谷, 仲谷 or 中矢) is a Japanese surname. Notable people with the surname include: , Japanese racing driver , Japanese artist Katsuhiko Nakaya (born 1957), Brazilian sprinter , Japanese i
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 0x7f212d94e86a52685a85714255a1d339ae74c4a57387548c7afcd02b1bb3e9d3. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5dd7ffa9-e8d8-43f7-8ccd-f27790a2e500.json and https://artists.proofprofile.net/proofs/artist/5dd7ffa9-e8d8-43f7-8ccd-f27790a2e500.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).