Nier is a 2010 action role-playing game developed by Cavia and published by Square Enix for the PlayStation 3 and Xbox 360. In Japan, the game was released as for the PlayStation 3 with a younger mai
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 0x0413b12be85312309834a36461bd9de9dc86f589dba9c958744a00dcb9d92611. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17b6c722-2ec3-40a4-baac-f9f53b472eff.json and https://artists.proofprofile.net/proofs/artist/17b6c722-2ec3-40a4-baac-f9f53b472eff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).