1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ecd7b82b983b381de9d5c5dce4597d5a3ee4573dbec921a68ae9fb07237506. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b742d48-8cf1-43fa-a299-c041900be53d.json and https://artists.proofprofile.net/proofs/artist/9b742d48-8cf1-43fa-a299-c041900be53d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wind Climbing ～風にあそばれて～ - Single Version
フィーヨルディー (北の港に住む精霊)
BOYS BE BRAVE ～少年よ勇気を持て～ - Single Version
Straw Color -シングルコレクション&モア- (International Version)