The exchange's Web site is back online, but only with a statement that it's closing all transactions for the time being.
The agency reportedly has a special division that monitors international banking and credit card transactions, says Germany's Der Spiegel.
In partnership with retailers, banks, and credit card companies, Apple will launch the iOS mobile payment service Apple Pay in the US in October.
Pricing not available
The online-payments company is testing the waters by partnering with other companies willing to process transactions using the digital currency.
Apple has already confirmed that it won't charge merchants or consumers for card transactions, yet it's unclear how much in fees the company can generate from banks.
CEO Tim Cook delivers on a promise to move into a new product category, making a foray into wearable devices with the Apple Watch. Plus: Bigger-screen iPhones and a mobile service called Apple Pay.
Apple's rumored embrace of true mobile payments may finally shake up how we pay for goods and services after years of empty promises.
Earlier this year, the mobile payment-processing company valued itself at a mere $5 billion.
The card reader company revamps its digital payment app to let users send cash with a text or email.
A deal to allow bitcoin as payment would apply only to eBay's PayPal Braintree business and not to eBay itself or to its PayPal subsidiary, says The Wall Street Journal.