Bitcoin crosses $100 for the first time on Mt. Gox on April 1, 2013. From $1 to $100 in just over two years. No April Fools' joke. The rally was driven by the Cyprus banking crisis, which saw depositors lose savings to government bail-ins -- a stark reminder of why sovereign, censorship-resistant money matters. Three-figure Bitcoin silenced some early critics while attracting a new wave of believers.
Wikipedia: History of Bitcoin