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 0xccc5827f2d9455164d7a5c1aa95fe4191313277d8e9fe031f0fcc2035eee7947. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a3c2316-3f91-4702-a088-e53f540b51fb.json and https://artists.proofprofile.net/proofs/artist/0a3c2316-3f91-4702-a088-e53f540b51fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
プリティーリズム・オーロラドリーム ライブチック・キャラクターソングCD act.3 Switch On My Heart