https://portfoliocharts.com/2021/12/16/three-secret-ingredie...
> bitcoin
:D
https://www.investopedia.com/news/hyperinflation-produces-su...
https://decrypt.co/332083/billionaire-ray-dalio-urges-invest...
But in any case, if OP meant deflationary, I don't think "real" is a good synonym.
It felt like "real" referred to the physical: gold, food, energy, minerals, real physical things that people have a constant demand for.
It was funny to spot the odd entry, where bitcoins are fully digital and have a very socially dependent agreement and entire digital infrastructure required to keep them functioning.
Gold has a bit of a social agreement as well, but it's social agreement dates thousands of years and even if it broke away still has value as a physical material.