Proof of consistent alimony or child support payments, which may include divorce or separation documents, court records, canceled checks, etc. (You do not have to include information about income from alimony, child support or separate maintenance payments unless you want to consider this as income for your application.) (firstcitizens.com)
consider reliable alimony, child support, or separate maintenance payments, if you choose to provide this information. (consumer.ftc.gov)
For IRA contribution purposes, compensation includes wages, salaries, fees, tips, bonuses, commissions, taxable alimony, and separate maintenance payments. (fool.com)