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Evidence Infrastructure Controlled Preview

EVE Trust Services

EVE Trust Services preserves, witnesses, and verifies governance evidence across models, agents, providers, and time. Now available in controlled preview for selected design partners — hosted verification, cryptographic custody manifests, and externally witnessable evidence infrastructure. Evidence custody and managed witnessing remain subject to production-readiness and contractual approval.

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Trust infrastructure, not trust claims

Independent verification of every governed decision

EVE CoreGuard already signs every decision with an Ed25519 certificate anyone can verify offline. Trust Services is the layer above it: it witnesses those signed records externally, keeps their custody provable, and gives auditors a structured way to verify them at scale — without trusting EVE.

Witnessing

External witnessing & transparency

Evidence roots are submitted to an independent witness and published to a transparency log, so a decision's inclusion can be checked by a party that is not EVE. A root is only marked witnessed after the receipt actually verifies.

Controlled preview
Verifier

Structured verification API

The /v1/trust/verifier API returns valid / invalid / indeterminate verdicts (key revoked, key unknown, unsupported schema), with a signed report for bounded bulk verification — the mechanics an auditor needs to check many records at once.

Available today
Custody

Cryptographic custody manifests

Signed custody manifests attest what evidence is held, for which tenant, and under what retention — a provable chain of custody. Custody is a service, not a transfer of rights: customers retain ownership of their evidence at all times. This is not legal escrow.

Controlled preview
Key registry

Signing-key registry & revocation

A key registry tracks decision-signing keys (active / retired / revoked) so verification can reflect key state — the first revocation surface for governance evidence. A record signed by a revoked key verifies as such, not silently as valid.

Available today
For auditors & examiners

How an auditor verifies a decision

Verification needs only the signed record and EVE's published public key — no EVE call, no shared secret. The full canonicalization and signing rules are documented for the current eve.decision.v3 certificate schema.

  1. Fetch EVE's Ed25519 public key from /.well-known/eve-pubkey — no account, no secret.
  2. Recompute the evidence hash over the signed payload using the published canonicalization (eve-jsonc-v1), and confirm it matches the record.
  3. Verify the Ed25519 signature over that hash string against the public key. A valid signature cannot be produced without the private key.
  4. Optionally check external witnessing / transparency-log inclusion, and the signing key's registry state, through the Trust Services APIs.
Verifiable is not the same as independently verified. Every record is third-party verifiable today. External witnessing and transparency-log inclusion are what turn "you could verify this" into "an independent party did." That is precisely the layer Trust Services is bringing online.
Honest status

What exists today, what is being built

Nothing here is marketed as generally available. Where a capability is in preview or in progress, this page says so plainly.

Shipping in EVE CoreGuard & EVE Proof

Deterministic pre-execution governance, per-decision Ed25519 signatures, offline verification, and the eve-coreguard / eve-proof SDKs are live and in customer hands today.

Available today

EVE Trust Services core

The verifier API and signing-key registry are available. External witnessing (transparency log) and hosted custody manifests are in controlled preview with design partners, gated on production-readiness.

Controlled preview

Toward general availability

Scheduled transparency operations, auditor credentials and a revocation feed, an SDK trust module, and a custody pilot pack are on the roadmap. None are rated GA-ready today.

In progress

Make every governed AI decision independently verifiable.

Trust Services is available in controlled preview for a small number of design partners.

Talk to us about a design-partner pilot