if you send bitcoin to this guy/girl (idk them) theyll double it and send it back. I tried it with 0.0001, 0.01 and 1 btc, and only the 1 btc didnt double they just sent it back (probably he didint have enough)

even though this probs wont last forever since he will run out of money sometime, but for now its great

1CzZLpxRft9QX1xYUaw7QYqMJPLHWcSiWP is the address