# at.adsb.version.info

> Published by [adsb.at](https://lexicon.garden/identity/did:plc:32thk4eifx4ou6mxevswgjhg)

✓ This is the authoritative definition for this NSID.

## Description

Version information for a lexicon in the at.adsb namespace. Published by the namespace authority to the network so consumers can discover the current schema version and its history.

## Links

- [View on Lexicon Garden](https://lexicon.garden/lexicon/did:plc:32thk4eifx4ou6mxevswgjhg/at.adsb.version.info)
- [Documentation](https://lexicon.garden/lexicon/did:plc:32thk4eifx4ou6mxevswgjhg/at.adsb.version.info/docs)
- [Examples](https://lexicon.garden/lexicon/did:plc:32thk4eifx4ou6mxevswgjhg/at.adsb.version.info/examples)

## Definitions

### `at.adsb.version.info`

**Type**: `record`

Version info for a single lexicon.

**Key**: `tid`

| Property | Type | Required | Description |
|----------|------|----------|-------------|
| `nsid` | `string` | Yes | The NSID of the lexicon this version info applies to (e.g. 'at.adsb.receiver.station'). |
| `revision` | `ref` → `at.adsb.version.defs#revision` | Yes | Current version of the lexicon. |
| `changelog` | `array` | Yes | History of changes, most recent first. |
| `createdAt` | `string` (datetime) | Yes |  |

## Raw Schema

```json
{
  "id": "at.adsb.version.info",
  "defs": {
    "main": {
      "key": "tid",
      "type": "record",
      "record": {
        "type": "object",
        "required": [
          "nsid",
          "revision",
          "changelog",
          "createdAt"
        ],
        "properties": {
          "nsid": {
            "type": "string",
            "maxLength": 256,
            "description": "The NSID of the lexicon this version info applies to (e.g. 'at.adsb.receiver.station')."
          },
          "revision": {
            "ref": "at.adsb.version.defs#revision",
            "type": "ref",
            "description": "Current version of the lexicon."
          },
          "changelog": {
            "type": "array",
            "items": {
              "ref": "at.adsb.version.defs#changelogEntry",
              "type": "ref"
            },
            "maxLength": 100,
            "description": "History of changes, most recent first."
          },
          "createdAt": {
            "type": "string",
            "format": "datetime"
          }
        }
      },
      "description": "Version info for a single lexicon."
    }
  },
  "$type": "com.atproto.lexicon.schema",
  "lexicon": 1,
  "description": "Version information for a lexicon in the at.adsb namespace. Published by the namespace authority to the network so consumers can discover the current schema version and its history."
}
```