# Historical Data

{% hint style="info" %}
**Historical price trends can indicate the future direction of a cryptocurrency**
{% endhint %}

Historical data provides several years of daily historical crypto prices, volumes, trades, and aggregates for each cryptocurrency.

Historical data is exchange specific, so some exchanges provide more historical data than others. If you want to save large amounts of historical data, please [contact us here](mailto:sales@abyiss.com).

## How It Works

Historical data is accessible on the [**`trades`** ](/crypto-api/rest-apis/last-trade.md)and [**`aggregates`** ](/crypto-api/rest-apis/aggregates-bars.md)market data endpoints.

To access historical data, use the **`since`** parameter. The **`since`** parameter accepts a Unix timestamp from where you want the data to start.

To help convert Unix timestamps we use [https://www.unixtimestamp.com](https://www.unixtimestamp.com/).

| Parameter | Data Type | Description                                           |
| --------- | --------- | ----------------------------------------------------- |
| `since`   | Int       | Unix Timestamp from where you want the time to start. |

## Historical Data

<mark style="color:blue;">`GET`</mark> `https://api.abyiss.com/v1/{exchange}/{market}/trades?since={Unix Timestamp}`

Returns an object with historical trade data.

#### Path Parameters

| Name                                       | Type   | Description                                         |
| ------------------------------------------ | ------ | --------------------------------------------------- |
| exchange<mark style="color:red;">\*</mark> | string | Unique exchange identifier used by Abyiss.          |
| market<mark style="color:red;">\*</mark>   | string | Unique Crypto Pair identifier used by the exchange. |

#### Query Parameters

| Name                                     | Type   | Description                                                             |
| ---------------------------------------- | ------ | ----------------------------------------------------------------------- |
| since<mark style="color:red;">\*</mark>  | int    | Unix Timestamp from where you want the data to start. (Historical Data) |
| limit                                    | int    | Number of results per request. Maximum 50,000. (default 200)            |
| apiKey<mark style="color:red;">\*</mark> | string | Your Abyiss API Key                                                     |

{% tabs %}
{% tab title="200: OK Success" %}

```javascript
{
    "exchange": "binance",
    "market": "BTC/USDT",
    "trades": [
        {
            "id": "2214",
            "timestamp": "1503000000087",
            "price": 4307.56,
            "size": 3.789232,
            "cost": 16322.344193920002,
            "side": "buy"
        },
        {
            "id": "2215",
            "timestamp": "1503000038104",
            "price": 4325.23,
            "size": 0.229059,
            "cost": 990.73285857,
            "side": "buy"
        },
}
```

{% endtab %}

{% tab title="401: Unauthorized Unauthorized -- Invalid API Key" %}

```json
{
    "Unauthorized": "Invaild API Key"
}
```

{% endtab %}
{% endtabs %}

### Response Object

**Trades** Example URL:[ https://api.abyiss.com/v2/cex/binance/btc-usdt/trades?since=1503000000000\&limit=100\&apiKey=](https://api.abyiss.com/v2/cex/binance/btc-usdt/trades?since=1503000000000\&limit=100\&apiKey=)

```json
{
    "exchange": "binance",
    "market": "BTC/USDT",
    "trades": [
        {
        "id": "2214",
        "timestamp": "1503000000087",
        "price": 4307.56,
        "size": 3.789232,
        "cost": 16322.344193920002,
        "side": "buy"
        },
}
```

**Aggregates** Example URL: <https://api.abyiss.com/v2/cex/binance/btc-usdt/aggregates/1h?since=1503000000000&limit=100&apiKey=>

```json
{
    "exchange": "binance",
    "market": "BTC/USDT",
    "aggregates": [
        {
        "t": 1503000000000,
        "o": 4307.56,
        "h": 4354.84,
        "l": 4258.56,
        "c": 4346.74,
        "v": 48.975472
        },
}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.abyiss.com/crypto-api/references/historical-data.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.