I just read part 1 of Dhruv Bansal’s “Bitcoin Astronomy” series “The Law of Hash Horizons” [1] and really appreciate his deep dive into what bitcoin can do to space travel.

What’s interesting about the Law of Hash Horizons is that it’s scale invariant: by tweaking parameters like block times, difficulty adjustments, etc you can make a blockchain accommodate either a single planet or several planets BUT you can also go the other direction. You can make them scale down to a city, a neighborhood, or even a house.

Why would you scale down? You’ve created a network with an impenetrable firewall.

What happens when the block subsidy becomes negligible? Maybe hashrate localizes to defend smaller networks of pooled bitcoin and only a fraction of the global hashrate works on the global blockchain.

1. https://unchained.com/bitcoin-astronomy/the-law-of-hash-horizons