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 0x4718311c8a48515141f88565422411c1fbd79f36be0d719c1b9fecdfcb6e008c. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8148e8a9-079c-4b05-a00c-361c289c659e.json and https://artists.proofprofile.net/proofs/artist/8148e8a9-079c-4b05-a00c-361c289c659e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
交響組曲: 忘れられない冒険へ, 「グランディア」より
交響組曲「私の心が宿る場所」（「スターデューバレー」より）