A mainnet essentially means the main network of a blockchain. It is the final developed network on which the transactions are verified and recorded. The phrase “mainnet” refers to when a blockchain protocol has been fully created and implemented, which means that bitcoin transactions are broadcasted, verified, and stored on a blockchain. When a new blockchain is being developed, the development is done on the test network or test net.
Usually, a company will launch Initial Coin Offering or initial exchange offering events to raise funds which will be used to develop a test network. Once the security of the testnet has been verified and bugs have been fixed, the mainnet is launched.
Now, if a testnet is launched on a third-party network to migrate the transactions to their own network, a mainnet swap takes place. So all the crypto tokens are replaced by the main net native crypto and all the activity is moved to the new chain.
