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 0x9f6e8f0223ad3ecfa52e8d1f1c87d1831c105669880fd457dd09b764ccf9b750. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2406a8d1-fff9-4406-9e8a-7e6c19429fdb.json and https://artists.proofprofile.net/proofs/artist/2406a8d1-fff9-4406-9e8a-7e6c19429fdb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
五月雨、モルタルの部屋を汚す朱殷
The May rains exude envy and regret. (Depersonalization Mix.)
五月雨、モルタルの部屋を汚す朱殷 (Depersonalization Mix.)