# work.sequential.cover

> Published by [sequential.work](https://lexicon.garden/identity/did:plc:tndzxgswtjuwylmsa5x3whwa)

✓ This is the authoritative definition for this NSID.

## Links

- [View on Lexicon Garden](https://lexicon.garden/lexicon/did:plc:tndzxgswtjuwylmsa5x3whwa/work.sequential.cover)
- [Documentation](https://lexicon.garden/lexicon/did:plc:tndzxgswtjuwylmsa5x3whwa/work.sequential.cover/docs)
- [Examples](https://lexicon.garden/lexicon/did:plc:tndzxgswtjuwylmsa5x3whwa/work.sequential.cover/examples)

## Definitions

### `work.sequential.cover`

**Type**: `record`

A cover for a chapter. A chapter may have several covers: a primary cover and any number of variants.

**Key**: `tid`

| Property | Type | Required | Description |
|----------|------|----------|-------------|
| `alt` | `array` | No | Localized alt text for the cover: describes the art and transcribes the title, cover text and any lettering. |
| `aspectRatio` | `ref` → `work.sequential.defs#aspectRatio` | No | The aspect ratio of the cover. |
| `chapter` | `string` (at-uri) | Yes | AT-URI of the parent chapter. Use the DID form (at://did:...), not a handle. |
| `credits` | `array` | No | The credits for the people who worked on this cover, when they differ from the chapter's. |
| `images` | `array` | Yes | Localized final images for this cover. |
| `label` | `string` | No | Name distinguishing this cover from others on the chapter (e.g. 'Cover A', 'Cover B', '1:25 Incentive'). |
| `versions` | `array` | No | Other versions of the cover's artwork, such as production stages or alternate treatments. AppViews may let readers peel back stages or switch between versions. |

## Raw Schema

```json
{
  "$type": "com.atproto.lexicon.schema",
  "defs": {
    "main": {
      "description": "A cover for a chapter. A chapter may have several covers: a primary cover and any number of variants.",
      "key": "tid",
      "record": {
        "properties": {
          "alt": {
            "description": "Localized alt text for the cover: describes the art and transcribes the title, cover text and any lettering.",
            "items": {
              "ref": "work.sequential.defs#localizedAlt",
              "type": "ref"
            },
            "maxLength": 100,
            "type": "array"
          },
          "aspectRatio": {
            "description": "The aspect ratio of the cover.",
            "ref": "work.sequential.defs#aspectRatio",
            "type": "ref"
          },
          "chapter": {
            "description": "AT-URI of the parent chapter. Use the DID form (at://did:...), not a handle.",
            "format": "at-uri",
            "type": "string"
          },
          "credits": {
            "description": "The credits for the people who worked on this cover, when they differ from the chapter's.",
            "items": {
              "ref": "work.sequential.defs#credit",
              "type": "ref"
            },
            "maxLength": 100,
            "type": "array"
          },
          "images": {
            "description": "Localized final images for this cover.",
            "items": {
              "ref": "work.sequential.defs#localizedImage",
              "type": "ref"
            },
            "maxLength": 100,
            "minLength": 1,
            "type": "array"
          },
          "label": {
            "description": "Name distinguishing this cover from others on the chapter (e.g. 'Cover A', 'Cover B', '1:25 Incentive').",
            "maxGraphemes": 100,
            "maxLength": 1000,
            "type": "string"
          },
          "versions": {
            "description": "Other versions of the cover's artwork, such as production stages or alternate treatments. AppViews may let readers peel back stages or switch between versions.",
            "items": {
              "ref": "work.sequential.defs#version",
              "type": "ref"
            },
            "maxLength": 50,
            "type": "array"
          }
        },
        "required": [
          "chapter",
          "images"
        ],
        "type": "object"
      },
      "type": "record"
    }
  },
  "id": "work.sequential.cover",
  "lexicon": 1
}
```