While there are many different blockchains powered by different type of algorithms, the most common are PoW — proof of work, and PoS — proof of stake.
There are plenty of articles out there explaining that blockchains, while having an advantage over traditional databases in some areas, like the centralised cost of security, have no particular advantage when it comes to the storage of data. And that point of view is a good thing. Why? Because, if they did, PoS blockchain algorithms that power cryptocurrencies would not be selling for pennies.
When looking for long term investing ideas in the cryptocurrency and blockchains ecosphere, remember the Internet of tomorrow, driven by the problems of today, will be always on, always tracking, always monitoring, always listening, and always watching.
Why?
Because it will always be learning.
About you.
https://www.altcoinsidekick.com/blog/problem-reaction-solution