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 0x0d0a3dd9a47cfa7c3f6bb5dca0fe417ce4540bb84efd2257cddcc8ca48367c0a. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bf4aac5-b18a-4dea-aefe-66e46e21f632.json and https://artists.proofprofile.net/proofs/artist/8bf4aac5-b18a-4dea-aefe-66e46e21f632.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Clock over ORQUESTA First season BATTLE Vol.05 栗花落 四麻【scherzando － スケルツァンド －】
Clock over ORQUESTA First season BATTLE Vol.05 Tsuyuri Azuma[scherzando]