Hi bitcoiners,
I've been into BTC fundamentals since 2018 but it's actually silly to ask such a noobie question like this.
So from my personal BTC explorer, i realized that sometimes a blockchain isn't really 10 minutes or anything close. I often experienced blockchains in-betweens taking way longer than 10 minutes say 30 minutes or 25 minutes.
Why was that? Isn't every blockchain supposed to be 10minutes(even when there is no transction at all).
Thank you.