Digital currency payment transfer in order to facilitate easy payment and give the payee more confidence in not letting go of their electronic wallet during the transaction. A cryptocurrency is a type of digital asset that relies on cryptography for chaining together digital signatures of asset transfers, peer-to-peer networking and decentralization. In some cases a proof-of-work or proof-of-stake scheme is used to create and manage the currency. Cryptocurrencies allow electronic money systems to be decentralized. The first and most popular system is bitcoin, a peer-to-peer electronic monetary system based on cryptography. A virtual currency has been defined in 2012 by the European
Gemini (digital currency exchange) excessively high volumes, a relatively common occurrence for any website receiving an unusual amount of traffic. On November 28, 2017, for example, both Gemini and Coinbase crashed for several hours. Gemini was showing a "504 gateway time-out" message, and the status page showed "Systems are currently experiencing degraded performance." Subsequently, the Gemini Blog offered this comment. "This is not the first scaling challenge we’ve encountered, and it won’t be the last. We’re continuing to improve our performance and infrastructure monitoring so we can anticipate potential problems more quickly in the future." Gemini (digital currency exchange) Gemini Trust Company, LLC (Gemini)