Custodial crypto casinos versus self-custodial books
The label crypto casino covers two quite different things. In the first model, a bettor deposits coins to an address controlled by the operator, sees a balance in an account, and withdraws when they choose. The operator holds the funds. This is custodial, and it carries the same counterparty risk as any other deposit-taking business, whatever the marketing says about blockchain.
In the second model, the bettor connects a wallet and places wagers directly from it. The operator never takes custody; settlement happens against a contract. Dexsport is an example of this wallet-only, self-custodial approach, and it is the model that most closely matches what crypto users expect. The trade-off is that lost keys are lost funds, and there is no support desk that can reverse a mistaken transaction.
The distinction matters most when something goes wrong. A custodial operator that freezes withdrawals, is hacked or becomes insolvent leaves users as unsecured creditors. A self-custodial book cannot freeze funds it does not hold, but it can still suffer contract exploits, and a bad contract can drain a connected wallet if approvals are careless.
For bettors, the useful question is not whether a site accepts crypto but where the money sits between bets. If the answer is an operator-controlled wallet, the crypto framing is largely cosmetic. If it is the bettor's own wallet, the risks change shape rather than disappear, and responsible position sizing matters as much as it does anywhere else.