Bittrex is a cryptocurrency exchange based in Seattle Washington in the U.S.A. It was one of the top 3 exchanges in the world for Bitcoin and other cryptocurrencies, but has seen some problems towards the end of 2017 that eroded investor confidence in the platform and as of April 2018 it ranks as the #8 exchange in Bitcoin trading volume and #6 in overall trading volume with close to $300 million in daily volume.
Kraken is a cryptocurrency exchange with headquarters in San Francisco, California, United States that was launched in July 2011, making it one of the oldest existing cryptocurrency exchanges. It was founded by Jesse Powell, who remains the CEO of Kraken, but the exchange is now owned by Payward Inc.
Despite its location in the U.S. it bills itself as “the world’s largest Bitcoin exchange in euro volume and liquidity”, and it serves clients in Europe, the U.K., the U.S., Japan and other countries across the globe.
It is also noteworthy that Kraken is the exchange providing pricing data to the Bloomberg Terminal, as well as being the exchange chosen to provide Mt. Gox creditors with claim support following the catastrophic 2014 hack that saw 650,000 Bitcoin go missing.
COSS is a new exchange that was launched in April 2017, but it is really so much more than a simple cryptocurrency exchange. Some might call it the crypto exchange 2.0 because of its broad based feature set. COSS stands for “Crypto One-stop Solution,” and that’s what the platform is trying to achieve. In addition to the cryptocurrency exchange feature of COSS, it also offers a POS/payment gateway for merchants, allowing them to easily accept cryptocurrency payments. COSS also has its own ERC20 token that pays holders dividends, and can be used as a micro-crypto economy.