Ukraine's Vice Prime Minister and Minister of Digital Transformation of Ukraine, Mykhailo Fedorov, has asked "all major crypto exchanges to block addresses of Russian users."

Fedorov tweeted this on 27 Feb,  ask, explaining that "it's crucial to freeze not only the addresses linked to Russian and Belarusian politicians, but also to sabotage ordinary users."
In a later tweet, Fedorov praised a move by NFT platform DMarket to freeze accounts belonging to customers in Russia and Belarus. DMarket had confirmed this on Twitter a few hours earlier, stating that assets remain in users’ accounts but that their access has been limited.
Jesse Powell, CEO of Kraken, one of the world’s largest exchanges, today responded that such a move could not be taken “without a legal requirement to do so,” but he added that Russian users should be aware that such an order “could be imminent.”
Fedorov's plea comes days after the United States and European Union jointly moved to cut certain Russian banks out of SWIFT, the international payments messaging system, in addition to freezing the overseas assets of Russia’s central bank.
More than $10m in bitcoin, ether and USDT has been donated to the Ukrainian government since its official Twitter account posted an appeal for support on February 26.
Meanwhile The Russian rouble has this morning plunged to a record low, sparking fears of a bank run in the country.