It is truly complicated to choose a single cryptocurrency that currently exists as a 100% reliable store of value whose value will not fall with time, since in the case of digital technology, it is impossible to think that in ten years there will be no technologically superior cryptocurrencies that they will be preferred by the investors of those days.

In fact, taking into account that we are just going through the first years of development of this technology, I sometimes think that we are still in a "beta" stage of cryptocurrencies, so out of bitcoin I do not currently see a single altcoin that might be able to survive for at least ten years with equal or more value than it now has, although perhaps Ripple could still retain some strength.