How do you guys limit token faucet? What is good way? Per wallet is not good solution because creating wallet is easy.

My idea was to select block and with some probability fill faucet with tokens for anyone to claim

Is there something like blockchain randomness in Solidity, which cannot be easily predicted? Iam worried that someone could interact with contract and in case of failure just not send transaction for confirmation.

Maybe some kind of Oracle?

Chainlink VRF

Perfect, thank you

Which topic is that this is up from my level