I have been mulling over a concept of a conjunction of cryptos and metals. Imagine a local back with a vault that stored the metals people have decided would be safer to store with them, and the same bank operated on an already existing or perhaps their very own crypto. The blockchain could be coupled to the "gram of gold" or "ounce of silver" and could be traded against competing cryptos.

It would essentially replace the idea of a metals backed paper currency where everyone could see what is represented within the blockchain eliminating money printing and inflation. The goal of this idea is to have an absolute store of wealth in one form or another, but if there is an EMP/CME, hurricane, ice storm, or anything that would knock out the power in a region, the metals would still be available to trade offering a more sustainable form of self sufficiency in any given local community. I agree cryptocurrencies have a massive presence in the future, but ignoring the history of currencies could be a pitfall full of punji stakes.

What are your thoughts and opinions on this concept? Has this been thrown around before, and if so could you point me to some good sources? Thank you.