Exactly nine years ago, on Jan. 3, 2009, the first block in Bitcoin's blockchain was mined. Called the genesis block, this block contains 50 bitcoins and was likely mined by Bitcoin's elusive creator, Satoshi Nakamoto. Looking at details of the event won't tell you much if you're not a cryptocurrency buff, but this was a time when Bitcoin was worth absolutely nothing, and you could mine it (that is, make new bitcoins) on your home PC.