Buterin rejected Liron Shapira’s prediction that AI-related security fears could halve Bitcoin within two years.Shapira assigned 50% confidence to Bitcoin crashing over 50% as AI undermines perceived network robustness.Buterin considers actual breaks of Bitcoin’s hashing or proof-of-work mechanisms extremely unlikely over that period.He said client and mining-pool upgrades could address network-layer attacks without requiring social consensus decisions.Bitcoin security groups have separately sought advanced AI access so defenders can identify vulnerabilities earlier.