Credit card networks are designed to allow people to buy stuff (payments for goods and services), rather than direct transfers of money. A claim payout falls into the latter category.
For claim payouts, we'd have to use the direct deposit method (as used by Paypal transfers, Square Cash, Google Wallet, Venmo, etc.). These utilize the debit network, so that when we send you say $100, you receive the full amount, with no fees taken.
Our financial transactions are powered by Stripe, and all sessions are fully encrypted with 256-bit SSL. Moreover, we never retain our users' financial information. Ever.