# at.atpcraft.player.snapshot

> Published by [atpcraft.at](https://lexicon.garden/identity/did:plc:6y74tzb6iqeuzuqqxgkizrek)

✓ This is the authoritative definition for this NSID.

## Description

Server-endorseable snapshot of a Minecraft player's state. Each endorsement is an Ed25519 signature from one trusted ATPcraft server.

## Links

- [View on Lexicon Garden](https://lexicon.garden/lexicon/did:plc:6y74tzb6iqeuzuqqxgkizrek/at.atpcraft.player.snapshot)
- [Documentation](https://lexicon.garden/lexicon/did:plc:6y74tzb6iqeuzuqqxgkizrek/at.atpcraft.player.snapshot/docs)
- [Examples](https://lexicon.garden/lexicon/did:plc:6y74tzb6iqeuzuqqxgkizrek/at.atpcraft.player.snapshot/examples)

## Definitions

### `at.atpcraft.player.snapshot`

**Type**: `record`

One snapshot per player per server, endorsed by one or more ATPcraft servers. Any trusted server's endorsement is accepted on read; on write a server adds or refreshes its own endorsement. The record key is the server's signing key id.

**Key**: `any`

| Property | Type | Required | Description |
|----------|------|----------|-------------|
| `aspects` | `array` | Yes | Opaque aspect payloads, sorted by name, names unique. |
| `summary` | `ref` → `at.atpcraft.player.defs#summary` | Yes |  |
| `version` | `integer` | Yes | Monotonically increasing snapshot version (anti-rollback). |
| `issuedAt` | `string` (datetime) | Yes | Snapshot creation time. |
| `endorsements` | `array` | Yes | Server signatures over the canonical snapshot payload. |

### `at.atpcraft.player.snapshot#endorsement`

**Type**: `object`

| Property | Type | Required | Description |
|----------|------|----------|-------------|
| `alg` | `string` | Yes | Signature algorithm. |
| `sig` | `bytes` | Yes | Ed25519 signature (64 bytes) over the canonical payload. |
| `server` | `string` | Yes | Signing server key id. |

## Raw Schema

```json
{
  "id": "at.atpcraft.player.snapshot",
  "defs": {
    "main": {
      "key": "any",
      "type": "record",
      "record": {
        "type": "object",
        "required": [
          "version",
          "issuedAt",
          "summary",
          "aspects",
          "endorsements"
        ],
        "properties": {
          "aspects": {
            "type": "array",
            "items": {
              "ref": "at.atpcraft.player.defs#aspect",
              "type": "ref"
            },
            "maxLength": 16,
            "description": "Opaque aspect payloads, sorted by name, names unique."
          },
          "summary": {
            "ref": "at.atpcraft.player.defs#summary",
            "type": "ref"
          },
          "version": {
            "type": "integer",
            "minimum": 1,
            "description": "Monotonically increasing snapshot version (anti-rollback)."
          },
          "issuedAt": {
            "type": "string",
            "format": "datetime",
            "description": "Snapshot creation time."
          },
          "endorsements": {
            "type": "array",
            "items": {
              "ref": "#endorsement",
              "type": "ref"
            },
            "maxLength": 64,
            "minLength": 1,
            "description": "Server signatures over the canonical snapshot payload."
          }
        }
      },
      "description": "One snapshot per player per server, endorsed by one or more ATPcraft servers. Any trusted server's endorsement is accepted on read; on write a server adds or refreshes its own endorsement. The record key is the server's signing key id."
    },
    "endorsement": {
      "type": "object",
      "required": [
        "server",
        "alg",
        "sig"
      ],
      "properties": {
        "alg": {
          "type": "string",
          "maxLength": 32,
          "description": "Signature algorithm.",
          "knownValues": [
            "ed25519"
          ]
        },
        "sig": {
          "type": "bytes",
          "maxLength": 64,
          "description": "Ed25519 signature (64 bytes) over the canonical payload."
        },
        "server": {
          "type": "string",
          "maxLength": 64,
          "description": "Signing server key id."
        }
      }
    }
  },
  "$type": "com.atproto.lexicon.schema",
  "lexicon": 1,
  "description": "Server-endorseable snapshot of a Minecraft player's state. Each endorsement is an Ed25519 signature from one trusted ATPcraft server."
}
```