Samurai Girl could refer to: Samurai Girl: Real Bout High School, a 13-episode anime series based on a six-volume manga written by Reiji Saiga. Samurai Girl (book series), a fictional series by Carr
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 0x174f6a0a4b65a385391ace9d3af1232c8e14a967186429f00670e66e6daafe4b. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4700d3c4-aa7e-4930-bf68-03d61d5bc10e.json and https://artists.proofprofile.net/proofs/artist/4700d3c4-aa7e-4930-bf68-03d61d5bc10e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).