A known local hash identifies the downloaded artifact. Remote presence verification does not prove a remote cryptographic hash. Local filesystem copies are checked against their stored hash and size.
HOW TO PLAY:
c down, c down + stick up, A button, c down, c down + stick up, c right, c up + stick down, c up, c up + stick up AND R bumper (absolute highest note), c up + stick down, c up by itself
Tada!
Check it out, featured in Toby's video! (at 2:21)
http://www.youtube.com/watch?v=PcNDMilSvJM
And hey if you love Garry's Mod, why not check out the Gmod Idiot Box Ripoff movies on my channel? (you just have to click "super6plx" at the top left and they auto play for you on the main page :D)
or you could follow these links:
http://www.youtube.com/watch?v=DH1rbLAQT60
and the sequel:
http://www.youtube.com/watch?v=kAt_6JIz3eg