In the event of such a crisis, whether Bitcoin could emerge as a global currency would depend on several factors:

Trust and Adoption: Bitcoin's adoption as a global currency would hinge on whether people and institutions trust it as a reliable store of value and medium of exchange.

Infrastructure and Scalability: Bitcoin's current scalability limitations would need to be addressed to handle global transaction volumes effectively.

Regulatory Environment: Governments and regulatory bodies would play a crucial role in shaping the legal framework and acceptance of Bitcoin as a mainstream currency.

Market Dynamics: The stability of Bitcoin's price and its ability to withstand market volatility would influence its adoption as a widely used currency.

 while Bitcoin offers decentralized control and limited supply, its volatility and current adoption primarily as a speculative asset pose significant challenges to becoming a universally accepted currency.