How it works
SlotGuard answers one technical question: which domain is serving this game? Two independent methods feed the same verification engine.
Method 1 — iframe scanning
Most casinos embed games in an iframe. SlotGuard scans the page for game frames — including frames added dynamically by single-page casinos — extracts the domain from each frame's source, and checks it against the database.
Frames belonging to the casino page itself and common service domains (chat widgets, analytics, captchas) are filtered out, so the check focuses on game infrastructure.
Method 2 — network request inspection
Some games load without a recognizable iframe. SlotGuard's background service worker observes the hostnames of network requests the page makes, which reveals the real game-server domain even when the page structure hides it.
Only hostnames are used for matching. Full URLs, query strings, and tokens are not needed and are not stored.
Why visual inspection isn't enough
A copied game can reproduce the original's graphics, sounds, and animations exactly. Appearance carries no proof of origin. The serving domain, by contrast, is part of how the game physically reaches your browser — that is what SlotGuard reads.
What "official provider domain" means
Game providers deliver their games from their own server infrastructure — domains they own and operate. The SlotGuard database maps known provider infrastructure. When a game is served from one of those domains, the source matches the stated provider.
What "unknown" means
A gray badge means the domain isn't in the database — nothing more. New provider domains, regional CDNs, and aggregator infrastructure can all appear as unknown until they are reviewed and added. You can submit an unknown domain for review directly from the extension.
Limitations — honestly
- SlotGuard verifies the serving domain. It cannot see or audit the game's mathematics, RTP configuration, or the casino's payout behaviour.
- Some casinos proxy game traffic through their own or aggregator infrastructure; in such setups the provider's domain may not be directly observable, and the result may be gray.
- The database cannot be complete. New domains appear constantly; unknown does not mean counterfeit.
- A determined adversary may change infrastructure faster than any database updates. SlotGuard raises the cost of deception; it does not make it impossible.
SlotGuard verifies known server-domain infrastructure. It does not audit game mathematics, certify casino licences, guarantee withdrawals, or replace regulatory due diligence.