AI just killed Crypto...

TL;DR

Google's DeepMind AI (AlphaQubit) solved quantum error correction, making fault-tolerant quantum computers viable by 2029 and threatening to break cryptocurrency encryption.

Key Points

• 1.Scott Aaronson is sounding a credible alarm about quantum threats. As the world's best-known quantum computing theorist and Schlumberger Centennial Chair at UT Austin, Aaronson is historically a quantum skeptic — making his urgent warning carry exceptional weight.
• 2.Trusted quantum hardware experts now predict fault-tolerant quantum computers by 2029. Aaronson says the most knowledgeable people in quantum error correction, whose judgment he trusts more than his own, believe crypto-breaking machines are roughly 3 years away.
• 3.AI directly enabled this threat by solving quantum error correction. Google DeepMind's AlphaQubit — an AI-based neural network decoder — identifies and corrects quantum computing errors with state-of-the-art accuracy, the same way AlphaFold solved protein folding.
• 4.Shor's algorithm is the specific mechanism that breaks today's encryption. Published in 1994, it allows a fault-tolerant quantum computer to trivially factor large prime numbers, rendering RSA and elliptic curve cryptography — used by Bitcoin, Ethereum, satellites, and banking — obsolete.
• 5.Crypto is especially exposed due to its public, permanent blockchain structure. If a wallet's public key is on-chain, a future quantum computer could derive the private key and steal funds — including Satoshi's dormant Bitcoin holdings — or impersonate any owner.
• 6.Google has set a 2029 internal deadline to migrate to post-quantum cryptography. In a March 2026 blog post, Google confirmed it is accelerating its PQC migration due to faster-than-expected quantum progress, and disclosed — via zero-knowledge proof — that elliptic curve cryptography is more breakable than previously thought.
• 7.Ethereum has a governance advantage over Bitcoin for migration. Vitalik Buterin and Ethereum's active governance structure make a PQC migration theoretically more feasible than Bitcoin's leaderless model, though both face enormous complexity in migrating entire ecosystems.
• 8.The quantum race mirrors the AI race with no plans to slow down. Aaronson notes labs justify racing ahead using the same logic as AI developers — better US companies do it first than Chinese or Russian intelligence in secret — calling this reasoning 'suspiciously self-serving.'