Download video: Geometry Dash - "The Vault" Passwords
TIP: Right-click and select "Save link as.." to download video
Initializing link download.....
Image: http://i.imgur.com/W1POGhP.png (I've heard it's bugged and doesn't work most of the time, so just wait for 2.01!)
The silver coins (user coins) are gotten by collecting them in, and completing online levels that contain them, you can see which levels have user coins in them by the coin icons under the difficulty rating.