Ethereum Cookbook

There's more...

Based on this property, a certain use case called the hidden Ether can be developed. This allows anyone to hide Ether that can be retrieved at a later stage.

Since a contract address can be easily guessed using the sender address and nonce, guess a future contract address that can be generated with the same address:

sha3(rlp.encode([0x1.., 10]))

Send some Ether to this address for safekeeping. To retrieve this Ether, deploy the following contract to this address:

pragma solidity^0.4.24;/** * @dev Retrieve money stuck in the contract address **/contract GetEtherBack {    // Destroy the contract and send Ether to the creator    constructor() public {        selfdestruct(msg.sender);    }}

The contract will self-destruct while deploying and ...