Yutaka Kobayakawa (CV: Shizuka Hasegawa)
{"copyright_id":"0x1d90607efc605e257e86d7286da0dbbe061c7b93d86e73bb5d43f9cc6bb0c368","name":"Yutaka Kobayakawa (CV: Shizuka Hasegawa)","registered_at":"2026-06-16T18:05:50Z","symbol":"NIM1132561","token_address":"0xb957baaed6b8dbae60f65bacc67b5a417f5995db","type":"artist","uuid":"518b0ea4-eed9-41c9-9ac6-81738e482c9d"}
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 0x1d90607efc605e257e86d7286da0dbbe061c7b93d86e73bb5d43f9cc6bb0c368. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/518b0ea4-eed9-41c9-9ac6-81738e482c9d.json and https://artists.proofprofile.net/proofs/artist/518b0ea4-eed9-41c9-9ac6-81738e482c9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TV Animation "Lucky Star" CHARACTER SONG VOL.005 Yutaka Kobayakawa (Shizuka Hasegawa)