was a Japanese American flutist and musician known for his mastery of the bamboo flute, specifically the shakuhachi. Yoshizawa also mastered several other traditional Japanese flutes, in addition to
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 0x37e7cc3244cdb1e1c4fe40e584c42019be05ae36da175255334770ffb82ff953. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78d47eff-2a61-4a44-8269-b850a6326851.json and https://artists.proofprofile.net/proofs/artist/78d47eff-2a61-4a44-8269-b850a6326851.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).