Post
Topic
Board Bitcoin Discussion
Re: Question regarding the role of miners vs nodes in securing the network
by
BlackHatCoiner
on 18/09/2021, 18:48:50 UTC
Nope.  Miners just blindly hash the header.  They don't make any attempt to determine whether the "Previous Block" attribute has been used before or not.

But, one of them can realize if they're trying to reorg it. One's enough to spear the news, isn't he?