Bitstamp is one of the first generations of cryptocurrency exchanges and has been providing easy to use, reliable and secure services since 2011. It has established itself as one of the first major Bitcoin exchanges that integrated the MultiSig technology for its wallet and cold storage where over 98% of the Bitcoins are stored offline in secure vaults. The two-factor authentication is also included in the Bitstamp exchange. The Bitstamp team has developed a mobile app, which is available on both Android and iOS.