SINGAPORE (Reuters) -Bitcoin and other cryptocurrencies rallied on Monday after U.S. authorities announced plans to limit the fallout from the collapse of Silicon Valley Bank (SVB) and as cryptocurrency firm Circle assured investors its peg was secure. The U.S. Treasury and Federal Reserve announced a range of measures to stabilise the banking system and said depositors at SVB would have access to their deposits on Monday. The moves came as authorities took possession of New York-based Signature Bank, the second bank failure in a matter of days.