FEATURE · 13 SITES · UPDATED 12 Oct 2026
Crypto casinos whose own games you can verify bet by bet: hashed server seed, your client seed, a nonce, and a published algorithm. I list only sites with a working public fairness page, and I say how many games it actually covers.
A crypto casino and sportsbook since 2019 with an active Curaçao (CGA) licence, 13,000+ games, provably fair originals and rakeback. Each deposit must be wagered once…
A crypto casino and sportsbook online since 2019 with 7,000+ games, fourteen provably fair originals including Crash, eleven coins and no house withdrawal fee. Curaçao OGL…
A 2023 crypto casino and sportsbook with email-only sign-up, 8,000+ games, provably fair originals and 5-15 minute payouts on paper. Anjouan licence, a $50 cap on…
A very large crypto casino and sportsbook online since 2017: Originals with hash-chain proof, 80+ sports, poker and a lottery. Anjouan licence valid; its former Curaçao…
An esports-first crypto book with 18 esports titles, 14 sports, email-only sign-up and a valid Anjouan licence. Margins near 8.5% on esports, a €100,000 weekly cap…
No site matches those filters. Loosen one.
No partnership with these sites — listed for completeness.
A provably fair casino lets you check, after a bet, that the result was fixed before you played and was not changed afterwards. It works as a commitment. Before your bet the casino shows you a hash of a secret server seed. You supply or accept a client seed. Each bet uses those two seeds plus a counter called the nonce. When you rotate the seed, the casino reveals the old server seed, and you can hash it yourself to confirm it matches the commitment, then recompute every result from the three inputs.
The catch is scope. Provably fair covers the casino's own games, usually called originals: dice, limbo, crash, plinko, mines and similar. It does not cover the thousands of third-party slots and live tables in the same lobby, which run on the providers' own systems. A site with 16 provably fair originals and 8,000 other games is mostly not provably fair. That is the single most useful thing to know before trusting the badge.
Step 5 is where most people give up, so I built the provably fair calculator. It runs HMAC-SHA256 entirely in your browser, nothing is sent anywhere, and supports dice, limbo, roulette and plinko with the two common formulas. If your number matches the casino's, that round was not changed after the fact.
The general method is on how I rate. For this list a site needs a public provably fair page that explains how each covered game's result is generated from seeds you can check; a licence I can find; published restricted countries; and no entry on the Shit List. A generic "our games use a certified RNG" paragraph does not qualify. That is why Bovada, which has an RNG page that names no testing lab and no provably fair page at all, is not here.
| Site | Licence | KYC | Provably fair scope | Payout test | |
|---|---|---|---|---|---|
| Roobet | Curaçao (operator's statement) | Light | 14 games on its fairness page, incl. Crash, Dice, Mines, Plinko, Limbo | Not yet | Visit |
| Rainbet | Anjouan | Light | 16 originals; client seed, hashed server seed, nonce from 0; built-in verifier | Not yet | Visit |
Two published sites qualify today, so there is no third row. Rainbet is the more transparent of the two on method: it publishes per-game algorithms, lets you rotate seeds, and has a verifier tab. Its multiplayer games, Case Battles and EOS Roulette, take their outcome from EOS blockchain blocks rather than your seeds. Roobet's fairness page covers 14 games with a tab per game; the overview itself prints no seed scheme, so open the tab for the game you play before you rely on it.
Treating a provably fair badge as a seal on the whole casino. Checking one round and assuming every game uses the same algorithm; each game maps the hash differently. Forgetting to write down the hashed seed before playing. And skipping the payout side: the payout tests page is where I check the part that fairness proofs do not cover.
Open a review for the full picture: licence, KYC clause, restricted countries and the exact list of provably fair games. Keep the calculator open in a second tab while you play originals. If you also care about documents, the no-KYC casinos list tracks verification rules, and the full crypto casinos list includes sites without provably fair games, scored on everything else. If you want to practise verification with small bets, a low-fee coin keeps the deposit cost down; the Solana casinos list shows both sites here accept SOL.
The casino commits to a secret server seed by showing you its hash before you bet. After you rotate seeds it reveals the seed, and you can confirm the hash matches and recompute each result from server seed, client seed and nonce. If your numbers match, the result was not changed after the bet.
Note the hashed server seed, set your own client seed, play, rotate the seeds, hash the revealed server seed with SHA-256 and compare, then recompute the result with the game's published algorithm. My provably fair calculator does the last step in your browser for dice, limbo, roulette and plinko.
Third-party slots usually are not; they run on the provider's systems. Provably fair covers the casino's own originals. Rainbet has 16 of them among more than 8,000 games; Roobet lists 14 on its fairness page among more than 7,000.
Among the sites I have published: Rainbet and Roobet, both with public fairness pages. Bovada has no provably fair page and its RNG page names no testing lab, so it is not on this list.
It cannot change a verified round after the fact, but it can still have a high house edge, cap bonuses, delay withdrawals or close accounts. The proof covers the game result only, which is why I review payouts and terms separately.
