Tea, tech, and secrets: how ketl onboards founders and VCs with zk

Meet ketl: private work-based socials powered by zk proofs. We have built the first anonymous credentials for all YC founders. Find out more and download on TestFlight!

Account abstraction and onchain identity: EIP-4337 and beyond

Find out what EIP-4337 is and its impact on the onchain identity-based infrastructure.

An incomplete guide to E2E encrypted communication for groups

In this blog post, we look at open-source protocols that support end-to-end encrypted communication for groups. We cover the protocols from Signal, Matrix, and XMPP. Encrypted group conversations today can use some UX innovation.

On Vitalik's vision for a Private, Multi-address future

Vitalik's recent blog post on stealth addresses brought privacy concerns back to the limelight. In this response blog post, we dig deeper into the technical challenges to solve so we can move to a private, multi-address future for crypto.

Private ECDSA Verification using ZK: Motivation, Optimizations & Security

Verifying ECDSA signatures privately, using zk proofs allows us to create anonymous credentials compatible with your existing Ethereum (and other) addresses. Verifying these signatures in circom is expensive. This blog post addresses the security of the recently proposed optimizations.