is a puzzle video game developed and published by Japanese studio Beyond Interactive. Originally released as a Flash game in 2009, Delbo was later published for Nintendo DSi's DSiWare download servic
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 0x4c79dbc078f62acc0cc50da0e69ac9c93d3ce6bb527268723ecd8a32e73e9043. 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/8f7d2876-596c-47b1-8371-364538890f36.json and https://artists.proofprofile.net/proofs/artist/8f7d2876-596c-47b1-8371-364538890f36.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).