> Add them all together for the ultimate, proof of destruction: cryptocurrency backed by atmospheric pollution, fauna and flora extinction and natural resource

> Add them all together for the ultimate, proof of destruction: cryptocurrency backed by atmospheric pollution, fauna and flora extinction and natural resource exhaustion. Make a DoomCoin! It would keep 12 difficulty counters, one for each proof of whatever, and getting farthest ahead in one of them lets you mine a new block. That way it can distort the prices of (sorry, "effectively allocate") CPUs, GPUs, disks, ASICs, RAM... anything else you can come up with. Sounds like a good project for a comic book villain. >Can Bitcoin be restored and restarted from one computer with the whole ledger stored on it? Yes, but it may be very slow the first period, as it would be used to the pre-collapse difficulty level.