was a Japanese cyclist.五輪自転車初代日本代表の加藤忠氏が死去 85歳 He competed in four events at the 1952 Summer Olympics. References Category:1935 births Category:2020 deaths Category:Japanese male cyclists Category
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 0xf3f2fa9c769031d85a6621e6ee998f4369a0e38adcb5c8ba19ec55fd41dfa53d. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45c63b93-df09-46ff-a712-eb66b114f4b9.json and https://artists.proofprofile.net/proofs/artist/45c63b93-df09-46ff-a712-eb66b114f4b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).