This is all but "green" ...
To produce some PoW that can be stored on a Floppy disk for a lifetime of mining, you need :
- Build a Nuclear reactor
- Mine Uranium (so green)
- Use centrifuges to have U-235 (even greener)
- Properly dispose of nuclear waste (yeah)
- Build hundred of thousands of ASIC chip (we all know it's a green industry)
- Build the system around
- Have people come and go every day to maintain it operable
- Change pieces regularly because technology is going really fast
Seriously, how can you sell that this thing is somehow ecological ?
It maybe less terrifying than running on coal, but you need to remember that you need a 1000$ chip + 200W during a year to have 1500$.
Is mining 1 ETH greener than 15 one-hundred dollar bills? I don't think so. Coin idea is great. Coin actual state is totally broken.
I don't even speak of the whole paying side hardware needed (NFC chips, servers, blockchain validation which is super heavy load, etc.)
Coin are not stable yet. When you see a coin get *30 in value under 2 month, you can't say it's viable option, whatever the reasons are.