Nethermind builds and secures core Ethereum infrastructure. We develop the Nethermind execution client, contribute to network upgrades, and advance protocol work across rollups and zero-knowledge systems. Our teams combine full-stack Ethereum expertise with security audits, formal verification, and emerging work in verifiable, privacy-preserving digital identity.
Smart contract security remains one of the toughest challenges in Web3 — and the gap is widening. As AI accelerates code generation and vibe coding pushes unaudited contracts to the Ethereum mainnet, vulnerabilities are slipping through faster than review processes or traditional audits can catch them.
AuditAgent fights fire with fire. It’s an AI-powered pre-auditing solution that uses large language models to analyze smart contract source code, documentation, and specifications — detecting vulnerabilities, inconsistencies, and logic flaws before deployment.
In this challenge, you’ll put AuditAgent to the test:
Run it on your own smart contracts, identify a major vulnerability, and fix it.
Your mission: demonstrate how AI-driven auditing can make your contracts safer and your development process more secure.
Your Challenge:
The goal is to showcase real impact — using AI to strengthen your code.
Prize of $500 — awarded to the best submission demonstrating:
Judging Criteria:
Ethereum is not just a blockchain; it is the most open coordination protocol ever built. It enables anyone, whether human or machine, to participate in shared rules, value exchange, and governance without requiring permission.
Your challenge is to build the missing infrastructure, tools, or mechanisms that make Ethereum a natural environment for agents. Not just agents using Ethereum, but agents that belong on Ethereum—able to transact, reason, coordinate, and collaborate.
Ask yourself:
We’re interested in the connective tissue: the foundations that allow agents and humans to coordinate effectively, transparently, and trustlessly.
Possible Directions:
Requirements:
Judging Criteria:
AI is transforming the battlefield of smart contract security. As vibe coding accelerates and more unaudited protocols rush to deployment, vulnerabilities are slipping through human review processes. At the same time, AI-driven attackers are getting faster, smarter, and more adaptive; therefore, the defenders must evolve too.
AgentArena is where that evolution takes place — a competitive platform where AI security agents battle-test smart contracts to uncover vulnerabilities before they fall prey to hackers. Each agent acts independently, scanning, reasoning, and reporting vulnerabilities for bounties.
This hackathon invites agent builders, AI researchers, and security engineers to build new agents that will join the swarm competing in AgentArena.
Your mission: create the most capable, creative, and effective autonomous agent for vulnerability discovery.
Your Challenge:
Even if you don’t win the prize, all submitted agents can continue to evolve and participate in future AgentArena competitions, earning bounties for every valid exploit they uncover.
Your agent will be evaluated on:
The age of autonomous agents is here, but it runs on a massive trust deficit. How do you prove an AI agent did what it was supposed to do, and nothing more?
ChaosChain is the accountability protocol for the agentic economy.
We're building the open-source infrastructure to make AI agents trustworthy by design. We invite you to build on our Triple-Verified Stack, a framework for end-to-end verifiable agent workflows:
Built on open standards like AP2, x402 and ERC-8004, ChaosChain turns trust into a programmable primitive. Your challenge is to utilize our SDKs to develop an application or service that leverages one or more verifiable AI agents. Show us what's possible when you can cryptographically prove an agent's identity, actions, and results.
What can you build with this?
The possibilities are endless when trust is a primitive.
Qualifications:
Judging Criteria:
Learn how to build verifiable AI agents with ChaosChain’s Triple-Verified Stack - a live walkthrough on creating tr...
03:00 PM UTC-03 — Friday, Nov 21, 2025 in Workshop Room 3
ETHGlobal Buenos Aires