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Digital ruble could be still vulnerable to fraud, Russian banks warn
- Category: Digital Currency News
- Written by Coin Telegraph
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The Association of Russian Banks is worried about regulators being unable to track illicit transactions of an offline-enabled digital ruble. 
Though not the oldest form of currency, some form of shell money appears to have been found on almost every continent. The shell most widely used worldwide as currency was the shell of Cypraea moneta, the money cowry.