Crypto casinos let players use digital currency and manage their own wallets,...

https://wiki-view.win/index.php/Can_I_Deposit_Crypto_and_Cash_Out_in_Pounds_Without_Surprises%3F

Crypto casinos let players use digital currency and manage their own wallets, meaning you control your private keys. Traditional online casinos use regular money, keeping it in their accounts where £20 always stays £20