If the hash matches, you have the genuine article.
Stick to official D3 with an internet connection, or play Diablo 2 Resurrected (offline mode available) or Diablo 4 (requires online, but less restrictive). No verified “version 17” offline emulator exists safely. If the hash matches, you have the genuine article
The emulator scene moves fast. Previous versions (v12, v14, v16) were unstable: If the hash matches