# bond.biblio.stamp

> Published by [lilinch.biblio.bond](https://lexicon.garden/identity/did:plc:7gis4mztcfyc6lw4dujlhju6)

✓ This is the authoritative definition for this NSID.

## Description

A librarian's cryptographic attestation that a reader completed a book for a reading list. The stamp lives in the librarian's repository, proving authority.

## Links

- [View on Lexicon Garden](https://lexicon.garden/lexicon/did:plc:7gis4mztcfyc6lw4dujlhju6/bond.biblio.stamp)
- [Documentation](https://lexicon.garden/lexicon/did:plc:7gis4mztcfyc6lw4dujlhju6/bond.biblio.stamp/docs)
- [Examples](https://lexicon.garden/lexicon/did:plc:7gis4mztcfyc6lw4dujlhju6/bond.biblio.stamp/examples)

## Definitions

### `bond.biblio.stamp`

**Type**: `record`

A completion attestation issued by a librarian

**Key**: `tid`

| Property | Type | Required | Description |
|----------|------|----------|-------------|
| `book` | `string` (at-uri) | Yes | AT-URI of the reader's book record. Lexicon-agnostic: works with bond.biblio.book, buzz.bookhive.book, or any future book lexicon. |
| `list` | `string` (at-uri) | Yes | AT-URI of the reading list this stamp is for |
| `createdAt` | `string` (datetime) | Yes | When this stamp was issued |

## Raw Schema

```json
{
  "id": "bond.biblio.stamp",
  "defs": {
    "main": {
      "key": "tid",
      "type": "record",
      "record": {
        "type": "object",
        "required": [
          "list",
          "book",
          "createdAt"
        ],
        "properties": {
          "book": {
            "type": "string",
            "format": "at-uri",
            "description": "AT-URI of the reader's book record. Lexicon-agnostic: works with bond.biblio.book, buzz.bookhive.book, or any future book lexicon."
          },
          "list": {
            "type": "string",
            "format": "at-uri",
            "description": "AT-URI of the reading list this stamp is for"
          },
          "createdAt": {
            "type": "string",
            "format": "datetime",
            "description": "When this stamp was issued"
          }
        }
      },
      "description": "A completion attestation issued by a librarian"
    }
  },
  "$type": "com.atproto.lexicon.schema",
  "lexicon": 1,
  "description": "A librarian's cryptographic attestation that a reader completed a book for a reading list. The stamp lives in the librarian's repository, proving authority."
}
```