> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agentsystems.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Verification

> How to verify log integrity

<Note>
  This guide covers verification for custodied hash storage (AgentSystems API).
  For Arweave (decentralized) verification, see [Independent Verification](/notary/verification/arweave).
</Note>

Verification compares logs against AgentSystems records to identify any discrepancies. Anyone with an audit ticket can verify — your customers, their compliance teams, or third-party reviewers.

## What You Need

| Item             | How to Get It                                                                            |
| ---------------- | ---------------------------------------------------------------------------------------- |
| **Audit Ticket** | Generate from [notary.agentsystems.ai](https://notary.agentsystems.ai) → Tenants → Audit |
| **Logs ZIP**     | Export from your S3 bucket (commands shown in the Audit modal)                           |

The audit ticket is a signed token that grants access to check logs against AgentSystems records for a specific tenant and date range.

## Running Verification

1. Go to [verify.agentsystems.ai](https://verify.agentsystems.ai)
2. Upload the audit ticket (`.json`)
3. Upload the logs (`.zip`)
4. Click **Start Verification**

No account is required to run verification.

## Understanding Results

| Result                   | Meaning                                                  |
| ------------------------ | -------------------------------------------------------- |
| **Verified Records**     | Records in the ZIP that match AgentSystems records       |
| **Unrecognized Records** | Records in the ZIP that weren't recorded by AgentSystems |
| **Missing Records**      | Records that AgentSystems recorded but aren't in the ZIP |

## Attestation Packets

After verification, download an attestation packet — a self-contained proof bundle you can share with customers, compliance teams, or regulators. Recipients can verify the cryptographic signature themselves without needing to re-run verification or trust your word.

## Verifying the Signature

The attestation certificate is signed with AgentSystems' notary key. To verify independently:

```bash theme={null}
# Download the public key
curl -o notary.pem https://verify-api.agentsystems.ai/.well-known/notary.pem

# Verify the signature
openssl dgst -sha256 -verify notary.pem -signature attestation.pdf.sig attestation.pdf
```

Expected output: `Verified OK`