Web3 Jargon: What’s a ‘ Network ' ? A network is a blockchain system where transactions happen & data is stored securely across many computers. It's the underlying blockchain infrastructure where transactions are processed and recorded, like @ethereum , @Bitcoin , @solana It is the foundation on which all crypto activity exists. Example: You buy $ETH on Ethereum. When you send it to a friend, the transaction is processed and recorded on the Ethereum network.