A global internet outage could severely disrupt the Bitcoin network, potentially splitting it into three isolated regions: Americas, Asia-Pacific, and Europe-Africa. Each region, with varying hash rates—45% in the Americas, 35% in Asia-Pacific, and 20% in Europe-Africa—would independently produce blocks, leading to chain splits and possible transaction reversals. Exchanges and wallets might halt withdrawals and on-chain settlements during the disruption. Once connectivity is restored, nodes would reorganize to the longest valid chain, a process that could take hours and result in numerous orphaned blocks. If the internet remains down indefinitely, Bitcoin could fragment into separate regional networks with incompatible transaction histories.