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Bithumb is a cryptocurrency exchange that is based in Seoul, South Korea. The platform was founded in 2013. It allows users to buy, sell, and store various cryptocurrencies. In South Korea, Bithumb is one of the largest exchanges, and it boasts some of the biggest crypto trading volumes.
Coingi was launched in early 2017. It is known that the platform maintains such coins as Bitcoin, Dash, Dogecoin, Litecoin, Namecoin, Peercoin, Vertcoin. Both deposit and withdrawal operations in Czech Koruna are free of charge. 
Bgogo is a centralized cryptocurrency exchange based on the Cayman Islands. The exchange was launched in 2018.