In the context of blockchain technology, "mainnet" refers to the primary blockchain network of a cryptocurrency or decentralized platform that is fully operational and accessible to the public.
The mainnet is the production version of a blockchain network that enables the peer-to-peer exchange of digital assets, execution of smart contracts, and other decentralized applications. It is the live version of the platform that is designed to be used by developers and end-users for various purposes such as executing transactions, deploying smart contracts, and interacting with decentralized applications.
Apart from tokens, the mainnet can also support other types of digital assets such as non-fungible tokens (NFTs) and can be used for a wide range of applications beyond just cryptocurrency. For example, the Ethereum mainnet is used to power various decentralized finance (DeFi) applications and other blockchain-based projects that rely on the execution of smart contracts.