Kraken was founded in San Francisco back in 2011 and is regarded as one of the most advanced and secure cryptocurrency exchanges. Currently, the exchange is the largest with regards to EURO volume and also trades in USD, CAD, JNY.
During the last 7 years, the independent press has spoken always highly of the company and they are the first to have passed a cryptographically verifiable proof-or-reserves (proof that there are sufficient reserves to cover client deposits at any given time) audit.
Kraken supports a range of the so-called core cryptos like Bitcoin, Monero, Zcash, Ethereum, ETC, EOS, Dogecoin and is trusted by millions of clients. At the same time, they are active in the cryptocurrency community and advocate the crypto movement towards regulation bodies.