Bitcoin: Bitcoin creator “Satoshi Nakamoto” remains an unknown figure to this day. But his (her?) Bitcoin is the first peer-to-peer currency for online transactions. Litecoin: Litecoin was created to be a direct competitor of Bitcoin. According to PCMag, Litecoin was designed to handle transactions more quickly than Bitcoin. It can take a significant amount of time for blockchain to process transactions, whereas a Visa or Mastercard can process thousands of exchanges in a second. Ethereum: Like Bitcoin and Litecoin, Ethereum is considered a significant cryptocurrency. Bankrate describes Ethereum as a “world computer"; this is because Ethereum is a foundational blockchain system that other blockchain developers can use to build new cryptocurrencies. The process of using existing blockchain technology and building on top of it is similar to how mobile developers build apps on the App Store platform.