2026-11-03 –, Jasmine Stage 4
A real AI agent goes on trial live, on chain: it earns its first money, pays for services, buys something that turns out to be junk, and gets disputed in front of you. You leave knowing which evidence makes an agent's track record checkable, and which parts of trust still rest on someone's say-so.
Agent payments are live, but trusting an agent that spends money is still mostly guesswork. In one talk, we put a real Claude agent on trial on Celo mainnet, in a single terminal. It registers an ERC-8004 identity, earns 0.10 USDâ‚®, pays for an API through x402, then buys a report from a provider with no reputation and receives junk. It opens a dispute through Kleros, and the ruling is written back as ERC-8004 reputation feedback. Every step leaves evidence: transactions, feedback entries, and the agent's memory and receipts on Swarm, a decentralized storage network where no single server can alter or take them down, with the hash on chain so anyone can fetch the bytes and check them. We show what each piece proves, where reputation can be gamed, and what makes a dispute credible. The audience closes the trial by voting on whether they would trust this agent.
Lena Hierzi is DevRel Lead at Celo Core Co, based in Lisbon. She leads a global developer relations team that accelerates cross-border payments, and she works on product management for agent infrastructure in the Celo ecosystem, including x402 payments with local stablecoins and ERC-8004 agent identity and reputation. A former hackathon builder with more than 20 wins, she has helped many developers get their first role in Web3.
Product Lead @Kleros. He works on onchain verification, certification and decentralized dispute resolution, building tools that help ensure everyone is treated fairly. He is now bringing those same tools to the agentic economy, which needs as much fairness.
CTO at Solar Punk, where I lead our work on the agentic economy: giving AI agents on-chain identity, reputation, and payments on Ethereum and Swarm with ERC-8004 and x402. After years building decentralized applications on Swarm and aligning protocol direction with the Swarm Foundation, I focus on turning new infrastructure concepts into systems that actually run.