Kraken is a US-based cryptocurrency exchange operating in Canada, the EU, Japan, and the US, and “the world’s largest bitcoin exchange in euro volume and liquidity”. . In June 2016, Kraken added Ethereum dark pool trading for large bitcoin buyers. Ven (currency) has also been traded on Kraken.
Kraken provides Bitcoin pricing to the Bloomberg Terminal. In April 2017, According to the reports, Kraken launched fiat funding options to transfers denominated US dollars and government-issued currencies.
Throughout 2017, the Kraken exchange has suffered from DDoS attacks and performance issues. In November 2017, Kraken CEO Jesse Powell apologized for the site issues, but praised its security, citing its impeccable record.
On 10 January 2018 Kraken suspended trading for over 48 hours while it performed an upgrade which was intended only to take 2 hours. Since first opening in 2011 this was the longest interruption to service.
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