Trying to get puush Recent Uploads to work

I'm trying to get the Recent Uploads context menu to work by implementing /api/hist, but I can't figure it out. I have a feeling it's something to do with the item ID, which may be sequential on puush.me's server, I don't know why the items aren't showing up in puush's menu.

Here's what puush.me sends from /api/hist:
    0
    104248997,2014-02-20 23:14:01,http://puu.sh/73pVr.png,ss (2014-02-20 at 11.13.02).png,2,0
    104247683,2014-02-20 23:07:27,http://puu.sh/73pAf.png,ss (2014-02-20 at 11.06.28).png,1,0
    102044795,2014-02-13 13:25:55,http://puu.sh/6UavN.png,ss (2014-02-13 at 01.25.01).png,1,0
    etc

And here's what this change sends:
    0
    11348101109,2014-02-20 18:39:21,http://s.blha303.com.au/q0em,clipboard_1259.txt,1337,0
    7811510284,2014-02-20 18:15:49,http://s.blha303.com.au/NsfT,ss (2014-02-21 at 02.12.18).png,1337,0
    5711481108,2014-02-20 18:05:17,http://s.blha303.com.au/9rQl,ss (2014-02-21 at 02.01.48).png,1337,0
    10655115111,2014-02-20 18:04:54,http://s.blha303.com.au/j7so,ss (2014-02-21 at 02.01.24).png,1337,0
    etc

The number is produced by the encode_base10 function I made, but maybe it's too long. Maybe puush doesn't like numbers larger than MAX_INT. I'm going to try more things, just thought I'd put this up here so others can have a crack at it.