Dhaka, March 2 -- Switzerland's central bank boss said bitcoin is too volatile and not liquid enough for use as a reserve currency, amid calls for a referendum on the issue in the wealthy nation.Cryptocurrencies do not meet the standards "that a good currency should have," Martin Schlegel said in an interview published Saturday in newspapers of the Tamedia media group.They are "extremely volatile", making them difficult to manage, while currency reserves "must be very liquid so that they can be used quickly," said Schlegel, who has run the country's Swiss National Bank (SNB) since October 2024.The SNB intervenes frequently on currency markets to prevent the Swiss franc from appreciating.He noted cryptocurrencies are a "niche phenomena" mo...