This glossary explains crypto casino terms covering deposits, bonus conditions, and gambling. Learn how to choose the right network for USDT, calculate a 35x wagering requirement, and distinguish RTP from your personal chance of winning. If a 35x wagering requirement applies only to a €20 bonus, you need to place €700 in qualifying wagers - not deposit €700.
Tip: Our dedicated guides explain the key terms in more detail: Wagering requirements, Provably fair, RTP and volatility, Rakeback and cashback, KYC, and Casino licenses. For technical Bitcoin terms such as hashrate, halving, and UTXO, see the Bitcoin glossary.
The terms follow the original glossary's A-Z grouping, with English terminology explained in plain language. Use them as a reference when reading a payment page or bonus rules. Cryptocurrency neither prevents gambling losses nor automatically makes payments anonymous: crypto casinos may still require identity verification.
A-B: Withdrawals to bonuses
Balance and payment terms
Anti-money laundering checksCheck which identity and source-of-funds documents may be required.
Withdrawal limitsDistinguish the minimum withdrawal from the withdrawal limit.
Block confirmationsCheck how many confirmations the recipient requires for your deposit.
Bonus fundsRemember: bonus funds are not initially available for unrestricted withdrawal.
AML and anti-money laundering checks
AML stands for “Anti-Money Laundering” and refers to measures against money laundering. These can include identity checks and evidence of the source of deposited funds.
If an operator requests these documents, you may need to provide an ID document or records showing where your funds came from. Depositing cryptocurrency therefore does not mean you can withdraw without identity verification. Before depositing, check which documents the terms allow the operator to request.
Withdrawals and withdrawal limits
A withdrawal transfers available funds from your gambling account to a destination such as your wallet. A withdrawal limit caps the amount per transaction or time period; the minimum withdrawal is the smallest amount you can withdraw.
For example, with a 20 USDT minimum withdrawal, you cannot withdraw 15 USDT. With a daily limit of 500 USDT, you cannot withdraw all of an 800 USDT balance in one day. Check both limits, especially if you want to withdraw a small remaining balance.
The operator's processing and the subsequent network transfer are separate steps. An internally approved withdrawal is not necessarily confirmed in your wallet yet.
Blockchain and block confirmations
A blockchain is a distributed transaction ledger maintained by multiple network participants. Bitcoin is a cryptocurrency with its own blockchain; BTC is its ticker symbol.
Block confirmations show that a transaction has been included in a block and that subsequent blocks have been added after it. Additional confirmations increase protection against later changes. The number of confirmations required and the time they take depend on the network and recipient, so check the recipient's requirements before depositing.
Bonuses and bonus funds
A bonus is an additional credit or gambling benefit that may come with conditions. Unlike withdrawable real-money funds, bonus funds are not initially available for unrestricted withdrawal.
Whether they become withdrawable depends on factors including wagering requirements, deadlines, and eligible games. For example, a 20 USDT bonus with a 30x bonus-only wagering requirement requires 600 USDT in bets. This is not an additional deposit, but it does mean repeated wagers with a risk of loss. Check maximum bets and any winnings caps too.
C-F: Cashback to free spins
Cashback and rakeback
Cashback is a rebate subject to conditions, not a blanket refund of your losses. It may be calculated using the operator's definition of net losses over a week, for example.
For example, 10% cashback on €80 in eligible net losses equals €8. Whether you can withdraw that €8 immediately or must wager it first depends on the bonus terms. Rakeback, by contrast, refunds a share of the gaming fees charged by the operator, such as in poker - not a share of your losses.
Cashout in sports betting
Cashout lets you settle an open sports bet early if the operator offers the feature for your bet. This is not a withdrawal to your wallet: if you accept, the offered amount is credited to your betting account.
The cashout amount may be higher or lower than your original stake. Availability and offers can change as the event unfolds. The feature may be suspended during a dangerous scoring opportunity, for example.
Cold wallet
A cold wallet keeps private keys without a persistent online connection; a hardware wallet is one example. The coins themselves are not stored on the device - their balances are recorded on the blockchain.
To make a deposit, you authorize the transaction using your keys. Keep your recovery phrase separate and offline: anyone who has it can generally access the associated funds.
Deposits and network fees
A network fee pays for processing a transaction on the relevant blockchain network. This is separate from any additional operator fee charged under the gambling site's terms.
If you transfer 50 USDT and pay a separate 1 USDT fee, your total cost is 51 USDT. Depending on the network, however, the fee is paid in its native cryptocurrency. Check the coin, network, and displayed fees. For more basics, see Understanding crypto payments.
Free spins
Free spins are spins provided without a separate stake from you, usually for specific slots and at a fixed bet value. Ten free spins worth €0.20 each represent €2 in play, for example - not €2 in withdrawable funds.
Check the eligible games, expiration date, and any wagering requirements on winnings. Free spins may expire, or winnings may initially be credited as restricted bonus funds.
G-K: Winnings caps to KYC
Winnings caps and maximum bonus withdrawals
A winnings cap limits winnings per game or within a specified period. A maximum bonus withdrawal, by contrast, limits the amount you can withdraw from a bonus. The relevant game or bonus terms define which winnings are affected.
For example, you have €160 in bonus funds after meeting the wagering requirements, but the bonus withdrawal cap is €100. You can withdraw no more than €100 from those funds; the remaining €60 cannot be withdrawn because of the cap. Check this condition before activating a bonus.
House edge
The house edge describes the operator's long-term statistical advantage. If a game has a theoretical RTP of 96%, its theoretical house edge under the same modeling assumptions is 4%: 100% minus 96%.
This does not mean you will lose exactly €4 when wagering €100 in a session. Individual rounds and short sessions can differ substantially from the theoretical average. The RTP entry below explains the calculation basis and what the figure tells you.
Hot wallet
A hot wallet manages private keys on a device or system accessible online. A cold wallet, by contrast, keeps keys offline, such as on a hardware device configured for that purpose. What matters is how the keys are managed, not how your balance is displayed.
A separate question is who controls the keys: you or a custodial service. A wallet app where you hold your own keys can therefore be a hot wallet, just as a service's online wallet can.
KYC and identity verification
KYC stands for “Know Your Customer” and refers to verifying a customer's identity. Possible documents include an ID and, where required, proof of address, such as a recent utility bill.
A crypto deposit does not automatically remove the need for identity verification. Before depositing, check which documents may be requested and whether verification is required for withdrawals.
L-P: Limits to provably fair
How to verify a provably fair round
1Save the server seed hash
2Calculate and check the hash
3Recalculate the result
Limits and time-outs
A €50 deposit limit caps your deposits over the specified period, not necessarily your total wagers: you can wager returned funds again. A loss limit caps losses according to the applicable calculation, while a bet limit restricts wagers, such as per round or time period.
A time-out pauses gambling for a limited period; availability, duration, and conditions depend on the operator. Read more about Limits and time-outs in our guide. Even with firm limits, gambling carries a risk of loss and is not a source of income.
Live casino and live betting
In a live casino, you play at tables through a video feed, such as roulette with a dealer. Live betting, by contrast, concerns sports events already underway: for example, betting on the next goal during a soccer match. Odds can change quickly, and betting markets may temporarily close.
Maximum bonus bet
A maximum bet can specify how much you may wager per round while using a bonus. With a €2 limit, even a €2.50 bet may breach the bonus terms. The consequences depend on the wording of those terms, so check the limit before placing your first bet.
Private key and public key
A private key is a secret cryptographic key that lets you authorize transactions. Never share it: anyone who has it can control the associated funds.
The public key is its publicly usable counterpart. Depending on the network, receiving addresses are derived from it; a public key and a wallet address are therefore not the same thing.
Provably fair
Provably fair describes a cryptographically verifiable method of generating results. With one common method, you verify a round as follows:
- Before playing, save the published hash of the secret server seed.
- Once the server seed is revealed, calculate its hash and compare it with the value you saved.
- Recalculate the result using the seed data, the round counter called a “nonce,” and the specified algorithm.
This lets you check that the result matches the defined procedure. Provably fair does not remove the house edge or confirm an operator's ability to pay or legal status.
Q-S: Odds to stablecoins
Odds and implied probability
Decimal odds show your total payout on a winning sports bet: stake multiplied by odds. Calculate the implied probability as 1 divided by the decimal odds; at 2.50, that is 40%. This is not an objectively established probability of the outcome. Bookmakers build in a margin, so the implied probabilities of all possible outcomes in a market usually add up to more than 100%.
RTP and payout percentage
RTP stands for “Return to Player” and describes a game's theoretical long-term payout percentage. The house edge is the mathematical complement to 100%: at 96% RTP, it is 4%. Both figures describe expected values over a very large number of rounds, not the result of your next session.
| Term | Calculation example | What you cannot infer from it |
|---|---|---|
| Odds | €10 stake × 2.50 = €25 total payout if you win, or €15 profit before any deductions | That the bet actually has a 40% chance of winning |
| RTP | €10,000 in total wagers × 96% = €9,600 in expected returns | That you personally will receive 96% of your wagers back |
| House edge | €10,000 in total wagers × 4% = €400 in expected losses | That your actual loss will be exactly €400 |
Slots
Slots are games with reels, symbols, and defined winning rules. RTP and volatility describe different characteristics: RTP concerns long-term returns, while volatility concerns fluctuations in results. Two slots with 96% RTP can therefore have very different payout distributions.
Smart contract
A smart contract is a program on a blockchain that automatically executes defined rules. For example, it can transfer tokens once a programmed condition is met. Automatic execution proves neither that the program is error-free nor that its terms are fair; flawed rules can also execute automatically.
Stablecoin
Stablecoins are tokens designed to track a reference value, such as the US dollar. A token may aim to equal 1 US dollar, for example, but can deviate from that peg. If you calculate your balance in euros, you also face exchange-rate risk: a stable dollar value does not mean a stable euro value.
T-Z: Tokens to two-factor authentication
Check payments and account access
- Check the networkMatch the token, network, and receiving details; include any required memo or tag.
- Understand verificationDistinguish email confirmation from identity verification.
Protect your seed phraseNever share your recovery information with support.
Secure your loginAdd a second factor to your password, such as an authenticator code.
Tokens and networks
A token name alone is not enough to make a transfer: the same token can exist on multiple networks. Before sending, the token, transfer network, and receiving details must match - including a memo or tag if required. A mismatch can cause you to lose your deposit.
Wagering requirements
Wagering requirements specify the qualifying bets you must place before withdrawing bonus funds. Calculation example: A €100 bonus with a 35x bonus-only requirement needs €3,500 in qualifying wagers. If the multiplier applies to a €100 deposit plus a €100 bonus, the requirement is €7,000.
Game contribution also matters: at a 10% contribution rate, €100 in actual bets adds just €10 toward the requirement. High wagering requirements mean repeated exposure to losses, not just a formality. Before accepting a bonus, compare the bonus terms.
Verification
Verification is an umbrella term for checks covering an email address, payment method, or identity, for example. Identity verification is called KYC, so confirming your email address does not mean you have completed KYC.
Volatility and variance
For slots, volatility describes the pattern of fluctuations: high volatility can mean longer stretches without a substantial payout, interrupted by rare large wins. Variance is the statistical measure of how widely results are spread. High volatility promises neither higher winnings nor a higher payout percentage.
Wallet and seed phrase
A wallet is a tool for managing keys; the coins themselves are not “in” the app. A seed phrase is sensitive recovery information, often consisting of 12 or 24 words, that can provide access to the associated keys. Not every wallet provides one. Never share it with support.
Two-factor authentication
Two-factor authentication (2FA) adds a second factor to your login, such as an authenticator code alongside your password. It does not replace protecting your seed phrase or checking the receiving address before a transfer.
Frequently asked questions about crypto casino terms
What does RTP mean in a crypto casino?
RTP describes a game's theoretical payout percentage over a very large number of rounds. A 96% RTP does not mean you personally will receive 96% of your wagers back: individual sessions can differ significantly, including losing your entire gambling budget.
What are bonus wagering requirements?
Wagering requirements specify how much you must bet before you can withdraw under the bonus rules. The calculation basis matters: “30x” may apply only to the bonus or to the deposit plus bonus. Also check the deadline, game contribution rates, and maximum permitted bet.
What does KYC mean?
KYC is identity verification used to confirm your personal details and help prevent fraud and money laundering. You may be asked for an ID and proof of address, for example. The documents and timing depend on the operator and applicable requirements.
What does provably fair mean?
Provably fair describes methods that let you cryptographically verify how a game result was generated. This verifiability is not a promise of winnings and removes neither the house edge nor your risk of loss.
What is the difference between a wallet and a network?
A wallet manages the keys that let you control your cryptocurrency; the network is the infrastructure used to transfer it. Before every deposit, check that the recipient supports your selected network - the coin name alone is not enough.
Frequently asked questions
What does RTP mean in a crypto casino?
RTP stands for “Return to Player” and describes a game's theoretical payout percentage over a very large number of rounds. At 96% RTP, the expected return is €96 for every €100 in total wagers; the house edge is 4%. This does not predict your individual session. You can lose your entire gambling budget even when the RTP is high.
How do bonus wagering requirements work?
Wagering requirements specify how much you must wager in qualifying bets before you can withdraw under the bonus rules. If a 30x requirement applies only to a €50 bonus, you need €1,500 in qualifying wagers. If it also includes a €50 deposit, that becomes €3,000. Check the deadline, maximum bet, and game contribution rates too: at a 10% contribution rate, a €10 bet counts as just €1 toward wagering.
What does KYC mean in a crypto casino?
KYC stands for “Know Your Customer” and refers to the operator's verification of your identity. You may be asked for an ID document, proof of address, or evidence of the source of your funds. Depositing with Bitcoin does not automatically make your gambling account anonymous. Before depositing, check which documents the operator requires and when verification is requested, such as before a withdrawal.
What does provably fair mean?
Provably fair describes a method that lets you verify how a game result was generated using cryptographic data. Typically, a hash is published before play as a commitment to a secret server value. Once that value is revealed, you can check the result using it and other inputs. The method does not promise winnings and does not replace checking the payout percentage or assessing the operator.
What is the difference between a wallet and a network?
A wallet manages the keys to your cryptocurrency; a network is the blockchain infrastructure that processes transactions. Your coins are not stored in the wallet itself - their ownership is recorded on the blockchain. When transferring USDT, for example, the sender and recipient must use the same supported network. Matching token names alone is not enough: choosing the wrong network can cause you to lose your deposit.
