Dash is a digital currency launched in 2014, aiming to provide a fast, secure, and private alternative to traditional payment methods. It's based on Bitcoin software but with several improvements, including a self-funding and governance model, and additional services from masternodes. Dash is used for various purposes, including payments, remittances, and investing, with a focus on usability and user experience. Xcoin and Darkcoin are the former names of Dash, which initially offered anonymous transactions. Dash was created by Evan Duffield, prioritizing speed, security, and privacy as an alternative to traditional payment systems.