Address Type
The address type represents a 20 byte Ethereum address.
Example:
contract Example {
  // An address in storage
  someone: address
  fn do_something() {
    // A plain address (not part of a tuple, struct etc) remains on the stack
    let dai_contract: address = 0x6b175474e89094c44da98b954eedeac495271d0f
  }
}