You don't generate any income statement there. What you'll be getting there is your deposit and withdrawal history. The casinos won't consider it as your source of income when you send them that and they won't approve it because anyone can ask their friends and families or even strangers to provide them a screenshot of their electrum balance. The casinos won't be looking for that as your source of income even if there will be ins and outs of it. What type of source of income you should send them are the typical ones that we're having, pay slip, or if you're self employed, the transactions that you're making or even bank slips might be considered but not from electrum.