http://blogs.wsj.com/moneybeat/2014/09/09/bitbeat-nakamoto-vs-the-hacker-apples-bitcoin-killer/The hacker said that if he received 25 bitcoins, he would release the bitcoin creator’s true identity. To prove that he actually had this information, he released screenshots that appear to be of a GMX email account’s inbox, “a little teaser” he called it. The inbox includes emails within the last 24 hours from two journalists, Adrian Chen and Wired’s Robert McMillan – who wrote a story on the hack – as well as emails from two bitcoin developers, Gregory Maxwell and Luke Dashjr.