A Mainnet: What Is It?
A mainnet is a separate blockchain that operates on its own network using its own protocol and technologies.
It is a live blockchain, as opposed to a testnet or projects that are built on top of other well-known networks like Ethereum, where its own cryptocurrencies or tokens are in use.
Testnet is used by programmers to diagnose and test any new blockchain functionality. Consequently, the primary distinction between testnets and mainnets is that the former comprises an ongoing blockchain project, whereas the latter requires a fully established blockchain.
Before the mainnet stage, a few important actions may be taken. A token sale and providing financing for a product to build and test features are two examples of this. The mainnet stage is often pushed out once this phase has been effectively deployed. This would indicate that the blockchain is operationally sound.

During the ICO, many blockchain businesses typically choose to employ their own coins tethered to the Ethereum network. These ERC-20 tokens are only meant to be utilized on the Ethereum platform. The mainnet is launched following the conclusion of the ICO.

The ERC-20 is not used on the mainnet; a native token is. Mainnet exchange is the procedure' subsequent step. The ERC-20 tokens are exchanged in this for the new currency on the blockchain. The old coins are often destroyed after the mainnet switch is finished. This will guarantee that only the fresh coins are used.