Bitstamp, Bitcoin's largest exchange service, restored automated customer withdrawals on Saturday, Feb. 15.
The exchange service was closed for four days due to a hacking attack, according to USA Today.
The Wall Street Journal reported a statement from Bitcoin that,"after rigorous testing, we have restored fully automated processing for Bitcoin withdrawals."
The hack in the exchange service involved what is known as "transaction vulnerability", according to The Verge. This problem involves the ability a user would have to change transaction deals. The user can make it appear that the transfer failed when it had succeeded.
Bitcoin core developer Jeff Garzik stated after examining the issue, the weakness in transactions is more widespread than his team believed, The Verge reported.
"It's mainly a nuisance", Garzik said, "forcing everybody to stop and fix their website software and Bitcoin wallets."
Garzik stated he was working with exchanges such as Bitstamp to develop solutions which would allow them to improve and restore their accounts, according to The Wall Street Journal.
Software changes were made during the service freeze in order to make sure the services such as Bitcoin withdrawals would be restored to full operation. The exchange stated that the changes would be tested before withdrawal capability would be restored. Customers would be updated on Monday, according to The Wall Street Journal.
The announcement of Bitcoin's development of a solution to the software issues on Friday resulted in a 9.7 percent increase in Bitcoin's price, according to USA Today, rising to $670.
The fix to the exchange service on Friday is only temporary. According to The Wall Street Journal, a more developed solution will take longer to be put in place for the software used by many exchanges in Bitcoin.
Bitcoin Foundation Chief Scientist Gavin Anderson stated that a more permanent fix to the affected software will be ready by next week, according to USA Today.
