At this point, only gold has the capability to be used as the reserve currency of the world. Bitcoin and some of the other cryptocurrencies may rise to that role in the future, but right now they are noway near that. Then there are other bullion currencies such as Silver and Platinum. But the issue with these metals is that they don't have enough liquidity to become store of value.
While that's true.
It's because the world has been used to that standard and gold has been the basis for having a reserve which is done by most countries. But if one country starts to change that just as what we're seeing with these alliances like BRICS trying to bring down the US and EU.
These global reserves could change but yeah, looking bitcoin at the spot is going to take time.