[Blockchain] Why is Bitcoin block time 10 minutes?

원래 질문은, 

What if nobody solves bitcoin puzzle in 10 minutes?

 

이런 글을 찾았는데, Bitcoin mining interval, 혹은 mining difficulty가 10 min으로 맞춰져 있는 것에 대한 흥미로운 생각이 담겨져 있어서 요약함.

https://www.quora.com/If-the-block-time-is-10-minutes-does-it-mean-that-the-first-miner-gets-a-coin-every-10-minutes

If the block time is 10 minutes does it mean that the first miner gets a coin every 10 minutes?

 

원글 (길어서 다 읽을 필요는 없고, Why Bitcoin Block Time Is 10 Minutes? 부분만 읽어 볼 만함)

https://medium.facilelogin.com/the-mystery-behind-block-time-63351e35603a#:~:text=Why%20Bitcoin%20Block%20Time%20Is%2010%20Minutes%20%3F

 

- Satoshi Nakamoto may already have known the problem of energy waste in mining the Bitcoin

(If Tom finds an answer at time T and distributes his result to the others on the network, and Peter receives it after deltaT, Peter have wasted computing power for deltaT)

 

- Though, he must have thought that the amount of waste is acceptable at difficulty of '10 minutes' per block

... Now in 2022, it turns out to be Bitcoin is actually impractical, both in slow transaction speed and waste of energy. What a 

 

Plus) Ethereum is achieving much faster mining consensus, by using GHOST protocol
(meaningless now? as it is planning to shift completely to PoS consensus 2022 Fall..)