Mikado may refer to: Emperor of Japan or Arts and entertainment The Mikado, an 1885 comic opera by Gilbert and Sullivan The Mikado (1939 film), an adaptation of the opera, directed by Victor Sch
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa24eb67dd1de91f379af04c4dd36ad77b9a4a9b924a1011a0061eb9bb323599. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/638af6b6-303e-40f5-be40-09c1711d21fb.json and https://artists.proofprofile.net/proofs/artist/638af6b6-303e-40f5-be40-09c1711d21fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).