A daemon, short for “Disk And Execution MONitor,” is a program that runs in the background of a computer system. It typically has no interaction with users and operates independently of them. In cryptocurrency, a daemon is a program that runs continuously on a node and performs various network-related tasks, such as validating transactions and generating new blocks.
Cryptocurrency nodes use daemon software to communicate with other nodes on the network and maintain an up-to-date copy of the blockchain. The daemon continuously checks the network for new transactions and blocks, validates them, and adds them to its copy of the blockchain.
Examples of popular cryptocurrency daemons include Bitcoin Core, Ethereum Geth, and Monero Daemon. These daemons allow users to run full nodes and participate in the network's consensus process. By running a daemon, users can verify transactions and help secure the network while also supporting the decentralization of the cryptocurrency ecosystem.