Blockchain technology enhances transparency in online casinos by providing a secure and immutable ledger that records all transactions and game outcomes, making them verifiable by all participants. With blockchain, players can independently verify the fairness of games through mechanisms such as provably fair algorithms, which allow them to confirm that the outcomes are generated randomly and not manipulated by the casino. This transparency builds trust, as players can see all bets, wins, and losses recorded on the blockchain, reducing concerns about fraud or unfair practices.