Mastering Blockchain Programming with Solidity

Externally owned accounts

An Ethereum wallet can hold one or more EOA. Wallets can be created by anyone via wallet creation websites, browser plugins such as MetaMask, or mobile apps. These wallet creation services generate a new private key using a specific account creation algorithm. Using this private key, the public key is derived. The combination of a private key and a public key is called an account or EOA. A public key can be shared with anyone to receive ETH/ERC20 tokens. However, the private key must be kept secret by the user. For the creation of wallets using MetaMask, you can refer to Chapter 4, Learning MetaMask and Remix.

An EOA is controlled by its private key to initiate any transaction with it. An EOA owner can send ETH/ERC20 ...