Practical Byzantine Fault Tolerance Is a consensus algorithm released during the late 90s by Barbara Liskov and Miguel Castro. pBFT was designed to work proficiently in asynchronous(no upper certain on when the reaction towards the request will be gained) devices. It is actually optimized for very low overhead time. https://financefeeds.com/global-financial-shifts-trigger-urgent-moves-4-blockchain-projects-tipped-as-the-best-cryptos-to-buy-today/