# Evidence schema

| Field | Meaning |
| --- | --- |
| `evidence_id` | Stable identifier for the retained observation |
| `capability` | Capability or gate being verified |
| `runtime` | Runtime language, or `cross-language` |
| `status` | Observed result: `pass`, `fail`, `partial`, or `not-run` |
| `evidence_level` | `local-source`, `public-package`, or `repository-matrix` |
| `verified_at` | ISO 8601 timestamp or date supplied by the source report |
| `runtime_revision` | Runtime commit/tag when recorded |
| `generator_revision` | Generator commit/build when recorded |
| `command` | Executed command or named automated gate |
| `result_summary` | Concise observed output |
| `source_url` | Canonical detailed evidence document |
| `qualifications` | Boundaries needed to interpret the result honestly |

New evidence should be appended rather than rewriting an earlier observation.
A superseding record may refer to the older `evidence_id` in its qualifications.