Securing Ethereum: Trust No Single Witness | Bhargava Shastry (Berlin Ethereum Day, June 2026)

Wed, Sep 2, 2026, 12:00 AM

Ethereum has no ground truth but only independent clients that can disagree, so a bug is just a disagreement. This talk by Bhargava Shastry (Ethereum Foundation) covers how to manufacture those disagreements with nightly differential EVM fuzzing across multiple execution layer clients, how to triage the ones the world reports through the EF bug-bounty program, and why every oracle (fuzzer, AI, reporter) is fallible enough that a human still has to break the tie. The Berlin Ethereum Day was a one-day event held on June 15, 2026 during the Berlin Blockchain Week. The full-day program brought together speakers from the Ethereum Foundation and the broader FOSS, privacy, and security ecosystems to explore the future of Ethereum and self-sovereign technologies - from technical direction and core values to the challenges and opportunities ahead. Future Meetups and Events: https://www.meetup.com/berlin-ethereum-meetup/ More information on the speakers and the agenda: https://berlinethereumday.com/