Keisuke Kuwata feat. Motoharu Sano, Masanori Sera, Char, Goro Noguchi
{"copyright_id":"0x11fcb922d50633604bd74fde8ad7011208b566389bde815d6b03cc4529595334","name":"Keisuke Kuwata feat. Motoharu Sano, Masanori Sera, Char, Goro Noguchi","registered_at":"2026-06-15T05:10:37Z","symbol":"NIM0692170","token_address":"0x17a42b35e492c129841bbb4df7ff68e15015f498","type":"artist","uuid":"ea87ea93-ad00-4d31-bc8c-7aadc0be9f28"}
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 0x11fcb922d50633604bd74fde8ad7011208b566389bde815d6b03cc4529595334. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea87ea93-ad00-4d31-bc8c-7aadc0be9f28.json and https://artists.proofprofile.net/proofs/artist/ea87ea93-ad00-4d31-bc8c-7aadc0be9f28.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).