A cryptocurrency exchange or a digital currency exchange (DCE) is a business that allows customers to trade cryptocurrencies or digital currencies for other assets, such as conventional fiat money or other digital currencies. A cryptocurrency exchange can be a market maker that typically takes the bid-ask spreads as a transaction commission for is service or, as a matching platform, simply charges fees.
Namecoin: In 2015 Namecoin looked promising, here in 2017 there is a little less hype. Still, Namecoin is notable. Namecoin is almost the same as Bitcoin. It was the first “fork” of the Bitcoin software. It’s based on Bitcoin and has the same unit cap, but has a few tweaks in its data storage. Namecoin was originally just going to be an upgrade to Bitcoin, but people were nervous that it would pose issues. So Namecoin is similar to Bitcoin, but like all the currencies that are not-Bitcoin, it is worth a fraction of Bitcoin. Its solid background and reasonable price point make it a relatively good coin to invest in. Of all the coins noted so far, Namecoin has performed the most poorly so far. It is still priced very low in USD.
Litecoin (LTC) is similar to Bitcoin in many of its characteristics and is also one of the more veteran cryptocurrencies out there. However, there are two main differences between Litecoin and Bitcoin: Speed and amount. While it takes 10 minutes to create a Bitcoin block, Litecoin demands roughly 2.5 minutes to create a block – meaning 4 times the speed. Moreover, Litecoin attracts many users, as it can produce 4 times the quantity of Bitcoin! However, as Litecoin uses highly complex cryptography, often mining it is more complicated than other cryptocurrencies.
Dash, which was formerly known as Darkcoin and Xcoin, is an open-source peer-to-peer cryptocurrency with the goal of being more user-friendly than other options. Dash created masternodes, which provide incentives to users to help secure the network and assist with user-friendly features, such as InstaSend - which significantly speeds up transaction-processing times.
In 1983, the American cryptographer David Chaum conceived an anonymous cryptographic electronic money called ecash. Later, in 1995, he implemented it through Digicash, an early form of cryptographic electronic payments which required user software in order to withdraw notes from a bank and designate specific encrypted keys before it can be sent to a recipient. This allowed the digital currency to be untraceable by the issuing bank, the government, or any third party.