Coinbase. It is a digital asset exchange that facilitates trading of digital currencies or cryptocurrencies, including the infamous Bitcoin. It is, unfortunately, my first-choice exchange platform to buy Bitcoins, since it is known to be the “fastest,” the easiest, and hopefully (continually) the safest. Compared to other exchange websites, it has layered security measures, and delivers transfers and exchanges in a couple of hours…if you’re lucky. I have horrible timing with exchanging and transferring Bitcoins on Coinbase.