0xB40

0xB40 is a hexadecimal string that sometimes appears in discussions of Ethereum and other blockchain platforms. As presented, it is not a complete Ethereum address, because valid addresses are 42 characters long, consisting of the prefix 0x followed by 40 hexadecimal digits. The fragment 0xB40 may be used as an illustrative example or shorthand in technical writing.

In Ethereum, addresses serve to identify accounts and smart contracts. An externally owned account is controlled by a private key; a contract account has code associated with it. Addresses are derived from public keys for EOAs and from contract deployment activity for contract addresses. They are used to receive, hold, and transfer ether and tokens, and as targets for transactions and method calls.

When 0xB40 appears in documentation, it is typically a placeholder rather than a reference to a specific deployed contract or token. To determine what a given address represents, researchers and developers use blockchain explorers to inspect the code, balance, transaction history, and events linked to the full 42-character address. This helps establish whether the address belongs to a wallet, a token contract, or another entity.

Related topics include Ethereum addresses, smart contracts, and blockchain explorers.