Independent smart contract security researcher helping ambitious teams ship resilient protocols through rigorous, attacker-minded review.
A focused selection of security reviews, contest results, and independent research.
Deep manual reasoning, protocol context, and purpose-built tooling—applied where risk compounds.
No recycled checklists or opaque handoffs. Every review starts by understanding your system, its assumptions, and the ways those assumptions can break.
$ threat-model ./protocol
✓ trust boundaries mapped
✓ invariants defined
✓ attack paths explored
_ analysis in progress
Line-by-line review of protocol logic, economic assumptions, access control, and integrations.
Stateful fuzzing and property-driven tests that probe the edges humans rarely reach manually.
Early architecture feedback before risky decisions become expensive implementation constraints.
Focused remediation review to confirm patches close the issue without opening a new path.
Application layer
Adversarial security reviews for on-chain applications, protocol logic, and decentralized financial systems.
Protocol layer
Deep review of distributed systems, node implementations, consensus components, bridges, and blockchain infrastructure.
A transparent engagement from first commit to verified fix.
We align on scope, architecture, trust boundaries, invariants, and the highest-risk surfaces.
Manual review and targeted tooling explore attack paths across code, integrations, and economics.
Each issue includes impact, proof, root cause, and actionable remediation—not just a severity label.
Remediations are reviewed and the final report records the verified security posture.
I’m OxprinceRektzero, an independent blockchain security researcher specializing in adversarial review of smart contracts and DeFi systems.
I work directly with engineering teams—from scoping through remediation—combining deep manual analysis with practical testing. The goal is simple: find the failures that matter, explain them clearly, and help you ship with confidence.