it has already been posted in here, but you should know that they are not asking for those who have been moving more than $20k during the last time, they are only trying to find and get the id's from those who were moving more than $20k on 2015.
they are only trying to do it because they know that bitcoin was more than 20 times lower during 2015.
Just make those maths; $20,000 x 20= It is more than $400,000.
That is why they want to get as much information as possible about them.
THESE COMMENTS WEREN'T WRITTEN BY ME, SOMEONE SCAMMER HAS HIJACKED MY ACCOUNT. I HAVEN'T POSTED ANYTHING HERE FOR ABOUT TWO YEARS BECAUSE I'M NOT TRADING AT THE MOMENT. I've changed the password so hopefully that'll stop them.