AAA stands for Authentication, Authorization, and Accounting, which are essential components in managing user access and actions within systems.

Authentication: is the process of verifying the identity of a user or system. In cryptocurrency, this often involves proving ownership of a private key or successfully logging into an account through secure methods.

Authorization: follows authentication and determines what an authenticated user is allowed to do. This step ensures that users can only access resources or perform actions aligned with their roles or permissions. For example, a wallet might restrict certain transactions based on user levels.

Accounting tracks the activities of users within the network. This includes logging all interactions, such as transactions and changes to account balances. This record-keeping is vital for auditing, ensuring compliance, and enhancing security. Together, these elements help ensure secure and efficient management of user interactions, protecting assets and maintaining trust among participants in the network.