Ethereum

Once again cryptography is blowing my mind

This tweet led me to do some research into @zkemail and it's so unbelievably cool. You can create zkProofs about specific parts of an email without revealing the whole email or your address. These proofs can be submitted onchain and smart contracts verify they came from the correct sender

For social recovery like Vitalik was talking about, you can designate email guardians. If you lose access to your wallet, your guardians receive an email to confirm the recovery. Once they reply, the proof is submitted and verified onchain, and your wallet is transferred to a new address specified by your guardian (this only works for smart wallets)
https://x.com/VitalikButerin/status/1821668593689620877

https://warpcast.com/chaskin.eth/0x08179508