# best.mediaserver.lspace.experimental.historyEntry

> Published by [lspace.mediaserver.best](https://lexicon.garden/identity/did:plc:432gc3tn6mbhglopn6idgxnx)

✓ This is the authoritative definition for this NSID.

## Description

One immutable progress change or retraction. Its repository DID identifies its owner.

## Links

- [View on Lexicon Garden](https://lexicon.garden/lexicon/did:plc:432gc3tn6mbhglopn6idgxnx/best.mediaserver.lspace.experimental.historyEntry)
- [Documentation](https://lexicon.garden/lexicon/did:plc:432gc3tn6mbhglopn6idgxnx/best.mediaserver.lspace.experimental.historyEntry/docs)
- [Examples](https://lexicon.garden/lexicon/did:plc:432gc3tn6mbhglopn6idgxnx/best.mediaserver.lspace.experimental.historyEntry/examples)

## Definitions

### `best.mediaserver.lspace.experimental.historyEntry`

**Type**: `record`

**Key**: `any`

| Property | Type | Required | Description |
|----------|------|----------|-------------|
| `change` | `union` | Yes |  |
| `eventId` | `string` | Yes | A UUID that also serves as the record key. Retrying a change keeps this ID. |
| `recordedAt` | `string` (datetime) | Yes | The device clock time. This field does not decide which concurrent change wins. |

## Raw Schema

```json
{
  "id": "best.mediaserver.lspace.experimental.historyEntry",
  "defs": {
    "main": {
      "key": "any",
      "type": "record",
      "record": {
        "type": "object",
        "required": [
          "eventId",
          "recordedAt",
          "change"
        ],
        "properties": {
          "change": {
            "refs": [
              "lex:best.mediaserver.lspace.experimental.defs#progress",
              "lex:best.mediaserver.lspace.experimental.defs#retraction"
            ],
            "type": "union",
            "closed": true
          },
          "eventId": {
            "type": "string",
            "maxLength": 36,
            "minLength": 36,
            "description": "A UUID that also serves as the record key. Retrying a change keeps this ID."
          },
          "recordedAt": {
            "type": "string",
            "format": "datetime",
            "description": "The device clock time. This field does not decide which concurrent change wins."
          }
        }
      }
    }
  },
  "$type": "com.atproto.lexicon.schema",
  "lexicon": 1,
  "description": "One immutable progress change or retraction. Its repository DID identifies its owner."
}
```