# Version 1.3

## Attributes

<mark style="color:red;">`*`</mark> is required

<table><thead><tr><th width="255">Attribute</th><th width="464">Description</th><th width="204">data format</th><th width="374">Example</th></tr></thead><tbody><tr><td>$schema<mark style="color:red;">*</mark></td><td>IPFS URL to the schema JSON the given metadata follows. Fixed value for Metadata Version 1.3 in example value. </td><td>URL</td><td>ipfs://bafkreigscdxuga3bisqbacawavo7yt5ta27okfydppsiy26wbtiiguw52u</td></tr><tr><td>historyType<mark style="color:red;">*</mark></td><td>History Type.</td><td>string</td><td>auction</td></tr><tr><td>hostLUW<mark style="color:red;">*</mark></td><td>Host LUW, Producer</td><td>string</td><td>0x8DFea3525EE810A7FEa886Fee69c57e68B5d5052</td></tr><tr><td>period<mark style="color:red;">*</mark></td><td>An object that contains time information of the custom history.</td><td>object</td><td>{ "from": "2020-01-23", "to": "2020-03-21" }</td></tr><tr><td>period.from<mark style="color:red;">*</mark></td><td>Period from</td><td>string</td><td>2020-01-23</td></tr><tr><td>period.to<mark style="color:red;">*</mark></td><td>Period to</td><td>string</td><td>2020-03-21</td></tr><tr><td>saleName<mark style="color:red;">*</mark></td><td>Name of the auction</td><td>string</td><td><p>{ </p><p>  "en": "ABC Exhibition", </p><p>  "ja": "エキシビション ABC" </p><p>}</p></td></tr><tr><td>venue<mark style="color:red;">*</mark></td><td>Venue of the exhibition. <br><mark style="color:red;">Required if it includes physical auction.</mark></td><td>string</td><td><p>{ </p><p>  "en": "Online", </p><p>  "ja": "オンライン", </p><p>  "zh": "一个标题" </p><p>}</p></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>hostCountry<mark style="color:red;">*</mark></td><td>Country where the auction held.<br><mark style="color:red;">Required if it includes physical auction.</mark></td><td>Enumerated string following ISO 3166-2 which is 2-letter code</td><td>CN</td></tr><tr><td>city</td><td>City</td><td>string</td><td>Beijing</td></tr><tr><td>isOnlineOnly</td><td>True if the auction is only held online, false if it is held physically.</td><td>boolean</td><td>true</td></tr></tbody></table>

## Complete Example

```json
{
  "$schema": "ipfs://bafkreigscdxuga3bisqbacawavo7yt5ta27okfydppsiy26wbtiiguw52u",
  "historyType": "auction",
  "hostLUW": "0x8DFea3525EE810A7FEa886Fee69c57e68B5d5052",
  "period": {
    "from": "2020-01-23",
    "to": "2020-03-21"
  },
  "saleName": {
    "en": "ABC Auction",
    "ja": "オークション ABC"
  },
  "venue": {
    "en": "Online",
    "ja": "オンライン",
    "zh": "一个标题"
  },
  "hostCountry": "CN",
  "city": "Beijing"
}
```