Avara is a 1996 first-person shooter written by Juri Munkki for Macintosh and published by Ambrosia Software. A fast 3D engine, integrated Internet play, and easy level editing were notable features a
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 0x4fee4d7b4514fe3f53f65ca76cad71dbdbb7b68d1917bb8a729b5a02ada0bb0a. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd3e1e3e-c641-4e72-a4f1-e41c1b214caa.json and https://artists.proofprofile.net/proofs/artist/fd3e1e3e-c641-4e72-a4f1-e41c1b214caa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).