need some help to provide eveidence of my loss, page-13

If you haven't used etax (etax records each transaction) then set up a spread sheet of all your trades which would:

1. Show a capital gain

or

2: Show a capital loss

The totalling of all transactions will give a figure for a either a loss or a gain.

In your case, as you state, a capital loss.

Take the spread sheet and your contract notes (hopefully you download each one) to the nearest ATO office.

If you haven't got a copy of the contract notes you can download them from your online broker.

If you haven't done any shonkeys the ATO won't bite.