Erasing the Honeypot. How Air-Gapped Bitcoin PSBTs Defeat the EIP-7702 Attack Vector and Render the $6.4 Billion Hot-Wallet Breach Mathematically Impossible.

How do you steal $6.4 billion without leaking a single private key?

You hack the automated API that asks the key to sign.

On October 29, hackers weaponized EIP-7702 to rewire a massive exchange hot wallet into a self-draining vacuum cleaner. But they couldn't touch sovereign Bitcoin cold storage for one simple reason:

The 5-Inch Air Gap.

Bitcoin's PSBT architecture forces you to physically verify transactions on an offline screen. A hacked laptop cannot bridge empty air.