is a Japanese manga series written and illustrated by Aki Shimizu. It was serialized in Media Factory's Monthly Comic Flapper magazine from September 2002 to February 2008, with its chapters collect
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 0xf578b32a6ee2eed15ce6a148e43ebb37748b97ba7d95a4e6d1e0f9c9e115a0cc. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2434bff-3333-4c57-bc38-6b275ff51551.json and https://artists.proofprofile.net/proofs/artist/d2434bff-3333-4c57-bc38-6b275ff51551.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).