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Crypto casino glossary

Crypto casinos combine two vocabularies: gambling and blockchain. Here are the terms you will meet most, from RTP to TRC-20, each explained in one line.

40 TERMSgambling and crypto, one line each

Emily ClarkeBy · updated October 18, 2026

Gambling terms

TermMeaning
RTPshare of stakes a game returns over the long run
House edgeshare the casino keeps; 100% minus RTP
Volatilityhow often and how big a game pays
Max winthe largest multiple of the stake one round can pay
Wagering requirementamount you must bet before bonus money is withdrawable
Game weightinghow much each game counts toward wagering
Max betthe cap on each bet while a bonus is active
Cashbacka share of net losses returned
Rakebacka share of the house edge returned on every bet
Bonus buypaying to enter a slot's bonus round directly
Tumblewinning symbols removed and replaced in the same spin
Pays anywherewins from matching symbols anywhere on the grid
Auto cash-outa multiplier at which a crash bet cashes out automatically
Moneylinea bet on who wins a game
Puck linehockey's 1.5-goal handicap

Crypto terms

TermMeaning
Walletsoftware or device that holds your keys
Recovery phrase12 or 24 words that restore a wallet
Self-custodyyou hold the keys, not a company
Networkthe blockchain a coin travels on
TRC-20 / ERC-20token standards on Tron and Ethereum
Confirmationa block added after your transaction
Gasthe fee on Ethereum
Stablecoina token pegged to a currency, usually US$1
Memo / tagextra identifier needed by some coins
LightningBitcoin payment layer for instant transfers
Layer 2a network built on top of another, such as Arbitrum

Casino and safety terms

TermMeaning
KYCknow your customer: the identity check
Source of fundsproof of where your money came from
Withdrawal capmaximum you can withdraw per day, week or month
Instalmentslarge wins paid in parts over time
Licence registerthe regulator's public list of licences
OGLprefix of Curaçao licence numbers
ALSIprefix of Anjouan licence numbers
Provably fairresults you can verify with seeds
Server seedthe casino's secret, hashed before the bet
Client seedyour input to a provably fair result
Noncecounter that changes each bet's result
Restricted countriescountries a casino does not serve
Self-exclusionblocking your own account for a period
Cooling-offa short self-imposed break
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For the full explanations, see provably fair, wagering requirements, KYC explained and coins compared.

Questions and answers

What does RTP stand for?

Return to player: the share of stakes a game pays back over the long run.

What does KYC stand for?

Know your customer: the identity check a casino runs on a player.

What is TRC-20?

The token standard on the Tron network; USDT on Tron is TRC-20 USDT.

What is ERC-20?

The token standard on Ethereum; USDT on Ethereum is ERC-20 USDT.

What is a nonce?

In provably fair games, a counter that increases with each bet.

What is a bonus buy?

Paying a fixed price to go straight to a slot's bonus round.

What is a confirmation?

A block added after your transaction; casinos wait for a set number before crediting.

What is rakeback?

A share of the house edge on your bets returned to you.

What is a memo or tag?

An extra identifier some coins, such as XRP and TON, need so a deposit reaches the right account.

What is volatility in slots?

How often and how big a slot pays: high volatility means rare, large wins.