Aleo is a Layer-1 blockchain that uses zero-knowledge proofs to enable private transactions. The network allows users to verify transactions without revealing underlying information, supporting use cases where confidentiality is required alongside regulatory compliance. Aleo uses a consensus mechanism that combines Proof of Stake for block finality with Proof of Work to incentivize proof generation. Applications are built using Leo, a programming language designed for the network. The ALEO token is used to pay transaction fees, stake with validators, and participate in network governance.