We need altcoins as long as we interact economically over the net, with people we do not know (or simply with people outside our local communities). If we try to imagine what qualities a “solarpunk coin” should have, what are your thoughts? Do we know any existing coin, checking all boxes? This question is more about political economy of Solarpunk, then its technology.
You post starts good, but then gets a few things wrong in the end 😅
For example the leverage banks are allowed to have is more like 1:10, meaning they can increase the money supply tenfold or so. It also doesn’t have to be backed by other customer’s money at all.
Interests on bank loans are also only a small part of why capitalism requires constant growth. In fact the recent years of near or partially even below zero interest rates proove that this basically a neglectable part.
In general, increasing money supply isn’t nearly as big of a problem as some people say, as ultimately money is just a means of exchange with no inherent value of its own, so it it good to be able to adjust the supply easily to account for the real world demand. If you want to read more about that the so called Modern Monetary Theory is a good start.
Personally, I would advocate for the exact opposite: (community) banking without government involvement.
While it is true that taxation gives government issued fiat currencies its primary trust, this is ultimately a coercive methode backed by the threat of violence and imprisionment, which is not something that I can support. It is also only one of many ways to structure a currency and have it being trusted by its users, so I think we will be able to figure out something better 😊