Wir bauen On-Chain.

1// SPDX-License-Identifier: MIT
2pragma solidity ^0.8.24;
3
4import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
5
6/// @title BlockForge Vault — nicht-verwahrender Tresor
7contract Vault is ReentrancyGuard {
8  mapping(address => uint256) private _balances;
9
10  event Deposit(address indexed user, uint256 amount);
11
12  function deposit() external payable nonReentrant {
13    require(msg.value > 0, "Vault: zero value");
14    _balances[msg.sender] += msg.value;
15    emit Deposit(msg.sender, msg.value);
16  }
17}