We are much to mobile for State Currency to work now. Back in the "horse and buggy days" it was possible .
What we need, in my humble opinion, is a national currency backed by metal (gold, silver, copper, nickel).
National Currency use to be printed by local banks. The bank that issued the bill was prominently displayed on the front of the bill. The bank that issued the bill had to have the METAL to back up the bill.
"NATIONAL CURRENCY" meant that it was negotiable though out the USA. The metal was held by the issuing bank, but other banks were allowed to exchange the bills for coin.
For all of this to work, metals would have to have a SET value, or the ups and downs of the market would make it to difficult to determine the value of a give bank note on a given day.
Kind of like the old $20.00 dollar gold piece viruses a $20.00 gold certificate. Both had the same value.
This would decentralize the monetary system, in effect put the power back with the states.

My notion on quid pro quo within a Republic would be for each state to expropriate open plots of land for community gardens. These boom and bust cycles of industrial consumer camps comes from capitalist commerce. The Safeway’s, Raleys, Walmart’s are some of the corporations that create the scarcity in resources across the planet. Capitalist commerce is also responsible for the polyethylene terephthalate (plastic) island patches of non biodegradable stews in our oceans. These pieces of plastic are proliferating. This is not sustainable. I believe a effective way to distribute the supply of the citizens of a Republic would be congregating city councils deliberating on remuneration. The council could account for time spent working in the garden equal to allotted resource. Example: A community garden has a fence around the perimeter. The entrances are locked, they are unlocked via city council app or a council key. You gain access to the garden from verification from the council. Entering the garden you are clocked, you provide your service to the community by maintaining upkeep. Every 30 minutes of work equates to a half pound of resource or until hitherto. This can be accounted for in two ways every half hour a copper coin is dispensed inside the garden that equates to half a pound of resource. This can be exchanged at the local city store. The other form of exchange could be all digital tracking hours spent providing a service. The account method could be a Republic cryptic currency.

It's odd that you say "inflated federal currency," but place no descriptor on "state currency."

Are you assuming no state would inflate their currency?

I’m against all fiat currency. All currency should be backed by a tangible asset. Now if a state we’re to issue a currency backed by gold or silver or even copper or the like I support that.

The establishment of bitcoin (and soon libra) shows that the concept of currency is not limited to either the gold or silver standard, or “legal tender.” If people trust it and it is convenient for them to use then it will gain popularity. The minute people do not trust it, because of inflation or some other factor, it will be abandoned, and those who invested in it will lose whatever they put in. Do we outlaw bitcoin or libra because they are potentially volatile? I would hope not (much as I dislike and distrust The Zuck),

pointless and would over complicate interstate commerce beyond comprehension