# org.passingreads.book.registrationHint

> Published by [passingreads.org](https://lexicon.garden/identity/did:plc:oeipalbxet5jghoqe6b6ctu6)

✓ This is the authoritative definition for this NSID.

## Links

- [View on Lexicon Garden](https://lexicon.garden/lexicon/did:plc:oeipalbxet5jghoqe6b6ctu6/org.passingreads.book.registrationHint)
- [Documentation](https://lexicon.garden/lexicon/did:plc:oeipalbxet5jghoqe6b6ctu6/org.passingreads.book.registrationHint/docs)
- [Examples](https://lexicon.garden/lexicon/did:plc:oeipalbxet5jghoqe6b6ctu6/org.passingreads.book.registrationHint/examples)

## Definitions

### `org.passingreads.book.registrationHint`

**Type**: `record`

A hint for which publication this book is, so that registration is especiall.

**Key**: `any`

| Property | Type | Required | Description |
|----------|------|----------|-------------|
| `bookId` | `string` | Yes | The book's ID (as defined on its QR Code) |
| `createdAt` | `string` (datetime) | Yes |  |
| `signatures` | `array` | Yes | Inline attestations binding this hint to the book's keypair, proving the hinter physically scanned the label. |
| `publicationId` | `string` | Yes | The suggested Open Library Edition ID for this book |

## Raw Schema

```json
{
  "id": "org.passingreads.book.registrationHint",
  "defs": {
    "main": {
      "key": "any",
      "type": "record",
      "record": {
        "type": "object",
        "required": [
          "bookId",
          "publicationId",
          "signatures",
          "createdAt"
        ],
        "properties": {
          "bookId": {
            "type": "string",
            "description": "The book's ID (as defined on its QR Code)"
          },
          "createdAt": {
            "type": "string",
            "format": "datetime"
          },
          "signatures": {
            "type": "array",
            "items": {
              "ref": "org.passingreads.signature.book#main",
              "type": "ref"
            },
            "minLength": 1,
            "description": "Inline attestations binding this hint to the book's keypair, proving the hinter physically scanned the label."
          },
          "publicationId": {
            "type": "string",
            "description": "The suggested Open Library Edition ID for this book"
          }
        }
      },
      "description": "A hint for which publication this book is, so that registration is especiall."
    }
  },
  "$type": "com.atproto.lexicon.schema",
  "lexicon": 1
}
```