Identity is not authentication
Identity is a persistent reference to an agent, organization, wallet, or workload. Authentication is evidence that the current actor controls a credential associated with that reference. A registry entry can make an identity discoverable; a signature can authenticate a request. Neither establishes that the actor is competent, safe, or allowed to perform the proposed action.
Authority is not reputation
Authority comes from a principal and should be scoped: what may be done, for whom, at what cost, for how long, and under which constraints. Reputation summarizes evidence about prior behavior. A highly rated agent can still lack authority for a transaction, while a newly created agent may have valid narrow authority without a long history.
Validation and current infrastructure
Independent validation asks whether a claim or behavior has been checked by another party. Current infrastructure spans portable registries, signed HTTP requests, delegated payment mandates, enterprise policy systems, feedback ledgers, and task-specific verification. The Agent Identity & Trust Index scores available mechanisms and labels maturity; it does not certify that a vendor or agent is trustworthy.
Why the distinctions matter
Combining identity, authentication, authority, reputation, and validation creates false confidence. Systems should record each signal independently, name its trust root and freshness, and decide which combination is required for the action at hand. Machine Observer’s measured registration and feedback counts are adoption signals, not proof of independent validation or safe behavior.
What the measured record says
QuickNode’s ERC-8004 Explorer showed 116,377 agent registrations and 29,831 feedback events over the trailing 30 days when checked September 1.
Use the live data
This guide explains the concepts; the underlying index continues to change. Open the related live index and methodology →
Interpretation boundary
Counts and probes are reported with their own populations and timestamps. Vendor declarations remain distinct from direct observations; no individual measurement is presented as a total market size or universal trust verdict.
Read the Machine Observer methodology →
For machine readers
sector: trust-integrity
last_updated: 2026-09-03
claim_ids: MO-2026-0004
structured_representation: /api/v1/stories?slug=ai-agent-identity-and-trust
claim_endpoint: /api/v1/claims?id=<CLAIM_ID>