Bitcoin Cash is the oldest cryptocurrency. Its white paper was published in 2008 and the genesis block mined in January 2009.
Bitcoin Core (BTC) is an experimental currency that does not have a white paper and has only operated under its current model for two years.
It's official, @iano and @fat, formerly founders of Bumpers, have joined Coinbase. They're bringing deep experience in consumer products and engineering to our team and we couldn't be more thrilled. Welcome!