Source: Tech – South China Morning PostThe sustainability of cryptocurrencies as a refuge is already facing a test after the digital alternatives to fiat were championed in the wake of Russia’s attack on Ukraine.After surging as much as 20 per cent at the start of last week and briefly topping US$45,000 on speculation that sanctions and a collapsing rouble would drive Russians into cryptocurrencies such as bitcoin, the original digital token reverted to acting like just another risk asset by Friday. It was trading at about US$38,390…Read More