Practical Byzantine Fault Tolerance can be a consensus algorithm launched in the late 90s by Barbara Liskov and Miguel Castro. pBFT was designed to work proficiently in asynchronous(no higher bound on when the response into the ask for will be gained) techniques. It can be optimized for small overhead https://financefeeds.com/global-fx-market-summary-israel-strikes-irans-nuclear-facility-gold-fed-currency-volatility-13-june-2025/