A Norwegian student spent $26 on Bitcoin in 2009 and forgot the password. He "cracked" it 4 years later. His $26 was worth $886,000.

In 2009, Norwegian student Kristoffer Koch bought 5,000 Bitcoin for $26.60 but forgot the password. Four years later, he cracked it as Bitcoin's price surged, selling a portion to buy an apartment in Oslo. His remaining Bitcoin is now worth over $450 million.