The Globe and Mail reports in its Tuesday edition that Canada's biggest banks still allow customers to buy Bitcoin and other cryptocurrencies with debit and credit cards, even as some U.S. lenders move to block such transactions. A Bloomberg dispatch to The Globe says that TD Bank, Canada's largest lender by assets, permits such purchases using a TD credit or debit card as long as the merchant is authorized to accept Visa, MasterCard, Interac or Visa debit and the transaction is not determined to be fraudulent. Royal Bank of Canada, the No. 2 lender, said it allows credit cards to be used for transactions involving cryptocurrency in "limited" circumstances. "We recognize that regulatory, risk and other external environmental factors relating to cryptocurrency continues to evolve," RBC spokesman A.J. Goodman said in a statement. "As such, we continue to review our policies to consider how we can best support clients." In the United States, JPMorgan Chase, Bank of America and Citigroup have in the past four days halted purchases of Bitcoin and other cryptocurrencies on their credit cards. Canadian banks say they are watching carefully. National Bank of Canada said it allows cryptocurrency transactions.