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

https://rowansnewthoughts.quantlynix.com/posts/is-it-normal-for-a-casino-to-ask-for-verification-before-a-withdrawal

Crypto casinos let players use digital currencies and manage their own wallets and private keys. Traditional online casinos use regular money, where your £20 stays £20 without worrying about crypto price changes