Justin Drake

So let me go through these one by one.

So the very first target will probably be Zcash because if you attack Zcash, you can mint an arbitrary number of ZDC and no one will know.

So QDA won't be made public.

Yeah, it's using snarks that are based on the curve that are liable to be broken by quantum computers.

And then, you know, one potential set of victims might be people who have died, for example, and they've just lost their coins.

And so if someone steals their coins, no one's going to complain.

there's like some amount of plausible deniability.

But then eventually, you know, we get- But we would notice that.

Like, you know, every quarter or so, there's like some zombie address that hasn't moved for, you know, 13 years.

They resurrect and no one knows the real reason.

It could-

Exactly.

And then, you know, you'd probably go and attack the biggest fish, which might be some exchange that hasn't put in the correct infrastructure to protect themselves.

So it turns out there's a very easy mitigation to quantum computers, the very first ones at least, is to...

not reuse your addresses.

Because when you reuse your address, you reuse the public key.

And that means that an attacker has the time to go crack the corresponding private key and then steal your funds the second time you use the address.

And so really the best practice should be that if you're holding any funds in long-term cold storage, it should be a clean address for which the corresponding public key has never been revealed.

And just to make this crystal clear, what a quantum computer allows you to do is to go from the public key back to the private key.

So it really jeopardizes the foundations of our property rights.