Dolla is a new cryptocurrency aimed at fast online and offline payments. It is designed to provide low latency (\~1 second for a transaction to clear) and high throughput (> 10000 transactions per second). In contrast to many other blockchain based cryptocurrencies in which received payments may disappear retroactively with some probability, Dolla is final, meaning that its transactions will never be rolled back and there cannot be any forks in its blockchain. This is achieved using a permissioned, but decentralized consortium system based on Byzantine consensus with voting. The consensus is a slightly modified version of the DBFT algorithm.
