Practical Byzantine Fault Tolerance can be a consensus algorithm introduced during the late 90s by Barbara Liskov and Miguel Castro. pBFT was designed to work effectively in asynchronous(no higher certain on when the response into the request will be acquired) devices. It is actually optimized for low overhead time. https://financefeeds.com/global-copyright-exchange-imbx-debuts-with-next-generation-trading-platform/