Welcome to @vitalik.eth, co-founder of Ethereum!  

He’s kindly agreed to do an AMA. Reply with your questions. :)

I’m a little bit of a broken record on this on WC, but I’d like to know his sense of urgency and mitigation thoughts on quantum supremacy w/respect to Ethereum, as I think it’s closer than commonly anticipated.

Freedom Factory | @ethos Ethereum mobile operating system. North maxi.🏰

Account abstraction (ERC 4337) gives us a clean path to making users' accounts quantum-proof. For existing accounts, if QC comes suddenly we may have to do a hard fork where you can recover your EOA by ZK-STARK-proving your 12-word seed (that's already quantum-proof and should cover most users).

For the consensus layer, STARK-based alternatives to (i) BLS aggregation, (ii) Verkle trees, (iii) KZG-based DAS are all being actively explored.

I did not know EOA was already effectively quantum proof, and it sounds like account abstraction with 4337 has more utility than I’d thought at first. Ty!