NEW YORK (MarketWatch) -- The Securities and Exchange Commission said Tuesday it charged Erik Voorhees with offering shares in two bitcoin-related websites without registering them, as required by federal securities laws. Voorhees allegedly published prospectuses and asked investors to buy shares in the two websites, SatoshiDICE and FeedZeBirds. Investors bought shares using the virtual currency bitcoin, leading to profits of more than $15,000 for Voorhees, according to the SEC. Voorhees agreed to settle the charges by giving up the profits of $15,843.98 and paying a penalty of $35,000. "All issuers selling securities to the public must comply with the registration provisions of the securities laws, including issuers who seek to raise funds using Bitcoin," said Andrew J. Ceresney, director of the SEC's Division of Enforcement.