[bannerts]

So with bitcoin and some other uses the actual public ecdsa key is hidden behind some hashing such that you gotta invert the hash function to get to the ecdsa public key before cracking. Also that's not a one to one but... Can you crack sha256 with quantum computing too?

[tylersmith]

Not as far as we know. This is nice but not perfect. Eventually a QC will be able to reverse a public key fast enough to double spend in-flight transactions before they're finalized.