Two Brink research interns, Dongjia Zhang and Stratos, recently wrapped up their 3 months of work on fuzz testing for Bitcoin Core.
Under the guidance of Niklas Gögge, each conducted independent research & experimentation on Fuzzamoto.
Dongjia is a Ph.D. researcher specializing in software security and fuzzing, and is the maintainer of LibAFL, a popular fuzzing framework. His extensive background in fuzzing made him well suited to contribute to several of Fuzzamoto’s engineering and testing challenges.
Stratos is a vulnerability researcher and approached Bitcoin Core security from a systems and protocol security perspective.
Both engineers made meaningful contributions to Fuzzamoto. Their work extended protocol support, improved benchmarking infrastructure, scaled coverage analysis, and broadened target coverage for the testing platform.
Read more on their achievements during the internship: https://brink.dev/blog/2026/05/29/fuzz-testing-research-interns/
Thank you Dongjia and Stratos for your contributions!
This is the main reason I'm running Core. No other implementation has anywhere close the same amount of testing and scrutiny.
As much as I like the idea of alternate implementations, it's going to be hard for them to demonstrate the same level of rigor.
You can see the interns even did work on supporting libbitcoin within fuzzamoto.
This is the kind of incremental work that quietly hardens the protocol.