A new security flaw doesn’t bode well for experimental cryptocurrency projects looking to use trusted hardware in the near future. Bitcoin could get better privacy with Taproot, but there’s one big obstacle – it can’t be deployed until another technology goes through. Lightning nodes are making money – albeit not much – displaying the potential for a growing fee market on the layer two tech. An influx of lightning apps are mostly silly, but they demo a serious point: the tech enables bitcoin to compete with traditional payment rails. A new type of profitability calculator has been released – and it brings bad news for many miners.