収束ゾーンでのライフ: Life in the Convergence Zone

Sadly, I can't seem to find the write-up now (I was reading it ca 2012, so...). But to ensure the security of a blockchain in a presumably-hostile environment, you need to control either >50% or >65% of all available compute power. Needless to say, the value of the bitcoins mined need to (at least) be paying for the compute power needed to keep the blockchain safe (not only pay the miner, but pay enough so that the expected bitcoin income is higher than the power used to generate it).

Pair this with with a limited-by-design monetary supply and, well, can I say "grim meathook future"?