https://ar.vogon.today/%d8%a7%d9%84%d8%b9%d9%85%d9%84%d8%a7%d8%aa-%d8%a7%d9%84%d8%b1%d9%82%d9%85%d9%8a%d8%a9/%d8%a3%d9%83%d8%af-%d9%85%d8%b7%d9%88%d8%b1%d9%88-ethereum-%d9%81%d9%8a-12-%d8%a3%d8%a8%d8%b1%d9%8a%d9%84-%d9%85%d9%86-%d8%a3%d8%ac%d9%84-shanghai-hard-fork/