ArbiStealth

ArbiStealth - private trade execution with verifiable agent accountability, built on Arbitrum.

Most on-chain trading forces a tradeoff: you can keep your trade private, or you can let an agent trade on your behalf with a verifiable track record — not both. Every intent-based DEX today broadcasts enough metadata — sender, size, timing — to enable front-running and copy-trading. And as autonomous trading agents move from experiment to production, there's no standard way to prove what an agent actually executed on a user's behalf, unless the trade's privacy is sacrificed entirely.

ArbiStealth doesn't invent new cryptography to solve this. It combines three existing standards into one settlement path:

- Privacy — ERC-5564 + ERC-6538. Every trade's output lands at a freshly derived, one-time stealth address, announced on-chain but unlinkable to the user's known wallet without their private viewing key.

- Agent identity — ERC-8004. Every agent that executes a trade holds a persistent, on-chain identity and reputation history — a track record that's verifiable, not self-claimed.

- Accountable payments — x402-style settlement. Routing fees settle as real, verifiable on-chain payments in USDG, with each receipt written directly into the executing agent's reputation entry.

How a trade actually flows: a user generates a stealth meta-address once and registers it on-chain. They sign a trade intent — asset in, asset out, minimum output, expiry — and hand it to an agent. The agent, holding its own ERC-8004 identity, picks up the intent through an off-chain relayer, executes it through the SettlementRouter contract, and the output is sent to the user's freshly derived stealth address with an on-chain announcement. The agent pays its routing fee in USDG, and that payment is recorded as a reputation entry tied to the trade — so the agent's history is auditable without ever revealing who it traded for.

This isn't a mockup: nine contracts are deployed and independently verified on Arbitrum Sepolia, the full stealth-settlement pipeline works end to end with an autonomous solver settling trades in real time, and a working Dashboard and Explorer let anyone submit an intent and watch it settle live, with every event traceable on Arbiscan.

The result is a single settlement path where privacy and accountability reinforce each other instead of competing: private destination, verifiable agent, same transaction.