Perfect Dark is a 2000 first-person shooter game developed and published by Rare for the Nintendo 64. The first game of the Perfect Dark series, it follows Joanna Dark, an agent of the Carrington Inst
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 0x0a5887b46a77077098f8b768600d6edf4f164d246306ebc6964c1938bcfce84d. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05ab7c4f-ddd5-4db3-8fe3-6142382df07d.json and https://artists.proofprofile.net/proofs/artist/05ab7c4f-ddd5-4db3-8fe3-6142382df07d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).