> If I and my grandma and everyone's grandma would use Proof of Work cryptocurrencies to buy peanuts at the supermarket, PoW energy usage would probably rival that of China.
I can't speak for all PoW cryptocurrencies, but this is a common misunderstanding about Bitcoin. Energy usage does not scale with the number of users. The transactions per second is largely fixed due to the block size limit. If your grandma is using Bitcoin, she will probably be transacting on a second layer, e.g. Lightning or Coinbase.
I can't speak for all PoW cryptocurrencies, but this is a common misunderstanding about Bitcoin. Energy usage does not scale with the number of users. The transactions per second is largely fixed due to the block size limit. If your grandma is using Bitcoin, she will probably be transacting on a second layer, e.g. Lightning or Coinbase.