Bitcoin Attacks that are Probably not a problem - Discussion

Welcome to this discussion thread. Feel free to ask questions or discuss things related to this section.

I am wondering that since the SHA256 hash function is often doubled hashed in Bitcoin (e.g. address creation, Merkle Tree of transactions) does this not mean that in the event that SHA256 is broken then there is adequate time to upgrade to a new more secure hash function?

Nothing to add other than this course is very useful!