"Last year, I suspected that my Private Key was compromised. To confirm whether the Address was really stolen, I transferred 500 Bitcoins to that Address. As a result, 490 Bitcoins were indeed stolen by a Hacker." Sorry, Pure Brother, this reminds me of that joke by Guo Degang: Yu Qian was walking down the street and saw something on the ground, thinking to himself, "Could this be 💩?" So he took a bite and happily said: "It really is 💩, luckily I didn't step on it!" 🤣🤣🤣