Feature comparison
| Capability | DarkMatter | LangSmith | MLflow | Datadog |
|---|---|---|---|---|
| Stored outside your system | ✓ Yes | ✗ No | ✗ No | ✗ No |
| Tamper-evident hash chain | ✓ Yes | ✗ No | ✗ No | ✗ No |
| Customer signing keys (L3) | ✓ Yes | ✗ No | ✗ No | ✗ No |
| Offline verifier (open-source) | ✓ Yes | ✗ No | ✗ No | ✗ No |
| OpenTimestamps anchor | ✓ Yes | ✗ No | ✗ No | ✗ No |
| Trace / step-level debugging | — No | ✓ Yes | ✓ Yes | ✓ Yes |
| Training data management | — No | ✓ Yes | ✓ Yes | ✗ No |
| Metrics / dashboards | — No | ✓ Yes | ✓ Yes | ✓ Yes |
| Framework-agnostic | ✓ Yes | ✓ Yes | ✓ Yes | ✓ Yes |
When to use DarkMatter
DarkMatter is the independent record.
Use DarkMatter when you need a record that survives a dispute, audit, or regulatory inquiry, one that neither you nor DarkMatter can alter without detection. The record lives outside your system and is sealed at the moment of action.
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Add the independent layer.
One import. Works alongside every other tool in your stack.