We've been preparing for a while? It's all that work people have been doing for years with asynchronous cryptography, ecc, and tech like what happens during heavy rain downpours and that coin with a bit in front of it.
These are all the proper preparation for AI. AI can't generate a private key given a public key. AI can't generate the appropriate text given a hash.
So we build a society upon these things AI can't do.
It has been a good run. We have done things like the tried and true ink stamping to verify documents. We have a labyrinth of bureaucracy for every little activity, mostly because it is the way that has always worked. It has surely been nice for the "administration" to sit around and sip lemonade in their archaic jobs. It has been nice to have incompetent people with no vision being appointed to high places for being born into the right families connected with the right people. That gravy train was surely a joy for those who were a part of it.
Sadly, it won't work anymore. We will need competent people now that actually care.
We need everything to be authenticated now with digital signatures.
It is not even that difficult a problem to solve. The existing systems are far more complex, far more prone to error, far more expensive, and far more difficult to navigate.
AI is giving us an opportunity to evolve. It is a time for celebration. Society will be faster, more efficient, more secure, and much more fun with generative content. AIs will produce official AI-signed content, and unsigned content. Humans will produce official human signed content, and unsigned content. Some AIs will use humans to sign content to subvert systems. But all of this pales in comparison to the fraud, waste, and total abuse of the current system.