Crypto is the boundary of what AI can't do. Not won't—can't.
AI can break CAPTCHAs, fake voices, forge images, and write like anyone. But it can't fake a blockchain balance. Can't forge a digital signature. Can't reverse a hash. When AI meets cryptography, probability meets impossibility.
Mathematical Certainty
AI solves most equations through pattern matching and approximation. Cryptographic equations don't care about patterns. They're mathematical locks that open only with exact keys. No amount of training data helps you factor large primes or reverse SHA-256.
The constraint is fundamental. AI works by finding what's likely. Crypto works by enforcing what's certain. One guesses brilliantly. The other doesn't guess at all.
This suggests crypto's real use case in an AI world: proof of uniqueness, proof of authorization, proof of sequence. When everything can be faked, cryptographic proof becomes the only remaining signal.
An AI can write a perfect email from your CEO. It can't send it from your CEO's blockchain address. Can deepfake your face on video. Can't sign with your private key. Can simulate your writing style. Can't simulate your transaction history.
We're building towards a world where "probabilistically correct" and "cryptographically verified" become the two categories that matter. AI owns the first. Crypto owns the second.
The machines that learn can't learn to break math. The math that doesn't learn can't be fooled by machines.