O(n) total world energy expenditure on Bitcoin scales to O(1) transactions, so it currently only gets worse as more energy is poured into the system for the sam

O(n) total world energy expenditure on Bitcoin scales to O(1) transactions, so it currently only gets worse as more energy is poured into the system for the same transaction output. There's a few solutions proposed: - off-chain transactions (Lightning Network) - unknown complexity - increased block size (Bitcoin Cash) - O(n) -> some larger O(1) - a different consensus system (proof of stake blockchain, distributed proof of stake blockchain, Tangle, etc.) - varies It's possible that the Bitcoin ecosystem will adopt one of these solutions in the future, but there doesn't appear to be a silver bullet right now.