Erick Cestari's profile picture

I'm a Bitcoin security researcher and Vinteum grantee, formerly at Lightning Labs, specializing in differential fuzzing and protocol testing. I build tools that systematically compare Bitcoin and Lightning implementations to uncover subtle behavioral differences and vulnerabilities before attackers do.

I maintain Bitcoinfuzz, a differential fuzzing framework spanning multiple Bitcoin implementations, and contribute to Smite, which brings snapshot-based fuzzing to the Lightning Network.

Through proactive testing and responsible vulnerability disclosure, I work to strengthen the security and resilience of open-source Bitcoin infrastructure.

2026