Crypto casino glossary

A cryptographic method that lets you independently verify that a game outcome was not manipulated. The operator commits to a result before the bet is placed by publishing a hash; afterwards you can check the revealed values against that commitment. It proves the result was not changed after you bet — it does not remove the house edge.

A fixed-length string produced from an input by a cryptographic function such as SHA-256. The same input always produces the same hash, and the input cannot practically be recovered from it. That one-way property is what lets an operator commit to a seed without revealing it.

A random string generated by the operator which, combined with your client seed and a nonce, determines game outcomes. Its hash is published before you bet, and the seed itself is revealed afterwards so the result can be reproduced.

A random value you provide, or that is generated for you, which is mixed with the server seed to produce outcomes. Because you control it, the operator cannot know the final result in advance. Changing it changes every subsequent result.

A counter that increments with each bet, so the same pair of seeds produces a different outcome every time. The nonce is part of the data needed to verify any single result.

Using the revealed server seed, your client seed, and the nonce to regenerate a game outcome and confirm it matches what you were shown during play. This is the actual act of verification — publishing a hash means nothing if nobody ever checks it.

How many times you must bet a bonus amount before any of it can be withdrawn. A 35× requirement on a $100 bonus means $3,500 in total bets first. Also called playthrough or rollover, and the single most important number in any offer.

The percentage each game type contributes toward a wagering requirement. Slots often count 100% while table games count 10% or less — meaning the same $100 bet can clear $100 or $10 of your requirement depending on what you played.

A cap on how much you may stake per spin or hand while a bonus is active. Breaching it can void the bonus and every win derived from it, which makes this the most common reason a bonus withdrawal is refused.

An offer where the operator matches a percentage of your deposit up to a limit. A 100% match up to $500 means depositing $500 gets you $500 in bonus funds — subject to wagering, weighting, and max-bet rules.

Complimentary slot spins, usually bundled with a welcome offer. Winnings from them normally carry their own wagering requirement, and often a cap on how much of the win can be withdrawn.

The operator's mathematical advantage on a bet, as a percentage. A 1% house edge means the operator expects to keep $1 of every $100 wagered over the long run. It is unaffected by strategy, streaks, or provable fairness.

The share of all money wagered that a game returns to players over time. 96% RTP means $96 back per $100 staked on average, across millions of spins — not across your session. RTP is simply the inverse of house edge.

How far a game's real results scatter around its RTP. High volatility means rarer but larger wins and longer losing runs; low volatility means frequent small wins. Two games with identical RTP can feel completely different to play.

The multiplier actually paid on a win, after the operator's margin is deducted from the mathematically fair multiplier. If the fair multiplier is 2.00× and the house edge is 1%, you are paid 1.98×.

An operator that takes deposits and pays withdrawals in cryptocurrency, either instead of or alongside conventional currency. Many but not all also offer provably fair games.

A cryptocurrency pegged to a reserve asset, usually the US dollar, to hold a steady value. USDT and USDC are the ones you will encounter most. Using one avoids your balance moving while you play.

The cost of moving coin on its blockchain, paid to the network rather than the operator. It varies with congestion and with the chain you choose, and it can quietly make a small withdrawal uneconomic.

Identity verification an operator performs, often required by its licence. Some crypto operators ask for nothing until a withdrawal is flagged; others require documents up front. Either way, assume you may eventually be asked.

A cap on how much you can take out per transaction, day, or month. Limits matter most exactly when you least want them to — after a large win — so they are worth reading before you deposit rather than after.