For any medium of exchange to be considered money, it must possess the following qualities:
1. General Acceptability
2. Portability
3. Durability
4. Divisibility
5. Homogeneity
6. Cognisability
7. Stability
8. Malleability
That list is not the list of fundamentals, as many people assume.
The root premise for money is: a minimum of 2 parties agree that one object (abstract or physical) can be used as a medium of exchange (maybe you might think that cryptocurrency is the first abstract currency, but it is preceded by knots in ropes, gravings on a wall, or marks in clay)
So that can go from two people who are butterfly collectors agreeing on using their shared interest (butterflys) as an exchange item, all the way up to something like gold or bitcoin. And it's all subjective, I don't care what anyone says. Whatever "objective" property one medium has that another doesn't isn't necessarily eternal. Gold could be synthesized using fusion, or made less chemically stable with a different isotope, or made less physically verifiable with tungsten, or displaced from monetary use due to it's physical properties being more highly valued for some specific industrial or commercial use. Bitcoin could have it's persistance affected by widespread EMP, draconian ban campaigns or the development of a successful attack on the SHA-2 algorithm.
State of the art technology has always been used to enable different monetary paradigms; precious metals, printing techniques and cryptocurrency are a testament to that. Cryptocurrency may well not be the last time this will happen.