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ERC-8004

ERC-8004 — trustless agent identity.

ERC-8004 is currently a draft Ethereum Standards Track ERC concerning trustless agents. It is not a finalized standard.

ERC-8004 proposes a shared, on-chain layer for trustless agents: persistent identity, reputation, and validation attestations that any counterparty can query before transacting. The goal is to let autonomous agents establish trust without a central operator — counterparties evaluate identity and reputation directly from the chain.

The three registries

Identity Registry
On-chain registration of agent identities, binding a persistent identifier to a controlling key and optional metadata.
Reputation Registry
Accumulated reputation signals — attestations, ratings, and history — that other agents read before transacting.
Validation Registry
Attestations that an agent's behavior or output passed a defined validation process (TEE, zkML, or off-chain review).

What the proposal covers

Agent identity
Cryptographic identity that survives across sessions and services, anchored to on-chain keys.
Agent discovery
Mechanisms for agents to find one another and resolve a peer's capabilities and reputation.
Validation
Validation of agent behavior and outputs, with results recorded for later querying.
TEE
Trusted Execution Environment integration, tying attested hardware to an agent's identity.
zkML
Zero-knowledge machine learning verification, proving an inference came from a declared model.
Composability
A common identity layer so agents from different operators can transact on equal footing.

Why identity matters for autonomous agents

Without a shared identity layer, every agent marketplace reinvents trust from scratch — opaque ratings, walled reputation graphs, and operator-locked identity. ERC-8004 aims to make identity and reputation portable and queryable on-chain, so an agent's history follows it across services and counterparties can price risk accurately before they pay.

How UTON uses it

UTON's agent infrastructure is designed around an ERC-8004-shaped identity layer: agents register once, accumulate reputation as they transact, and present validation attestations (from TEEs or zkML) when their work must be trusted. Because the registries are on-chain, an agent's trust footprint is verifiable by anyone — not asserted by a single operator.

STATUS

ERC-8004 is a draft standard. Its status is tracked and may be updated by administrators as the proposal evolves. Do not treat it as finalized unless its status changes.

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