【The United States Implements Sanctions on Ruble Stablecoin A7A5 and Garantex's Cryptocurrency Network】On August 15, news reported that the United States has imposed blacklist sanctions on the ruble stablecoin A7A5 and the closed Russian cryptocurrency exchange Garantex's crypto network. Garantex was shut down after processing over $100 million in illegal transactions and subsequently rebranded as Grinex to continue operations. The stablecoin A7A5 is backed by Russian institutions and is used to evade international sanctions, with a daily trading volume of $1 billion. In collaboration with Germany and the Finnish police, the U.S. seized the domain name of Garantex's website and froze $26 million in assets in March. Key executives of Garantex, Sergey Mendeleev, Aleksandr Mira Serda, and Pavel Karavatsky, as well as Mendeleev's companies InDeFi Bank and Exved, have been added to the sanctions list for assisting sanctioned Russian firms in trading through cryptocurrency channels. According to blockchain analytics company Elliptic, the ruble stablecoin A7A5 supports a 'sanctions evasion scheme' that allows Russian companies to bypass the traditional banking system for cross-border payment settlements.