https://arab-btc.net/%d9%85%d9%86%d8%b5%d8%a9-bitfinex-%d8%a7%d8%aa%d9%87%d8%a7%d9%85-%d8%a7%d9%84%d9%85%d8%af%d8%b9%d9%8a-%d8%a7%d9%84%d8%b9%d8%a7%d9%85-%d8%a3%d8%b6%d8%b1-%d9%81%d9%8a-%d8%b9%d9%85%d9%84%d9%86%d8%a7/