None of these substantiate the claim that "Russia is exploring crypto for transfers"; they just point out, as I did above, that people outside Russia say Russians could hypothetically use cryptocurrencies for transfers despite US sanctions. None of them even propose that the Russian government use cryptocurrencies for its own foreign trade, and none of them claim to have any Russian sources at all, whether officials or leaks or civilians. The Cointelegraph article claims that Maduro proposed doing this in the past (for Venezuela) and that Iranians raising money for flood relief have actually done so.