# Replication data

## What is this endpoint for?

Crypto Reference Rates are available exclusively through our [Stream](https://docs.kaiko.com/stream/) Service. This helps you identify the underlying trades used to calculate each publication. Simply take the `sequence_id` field from any published rate you receive via Stream, and query this endpoint. The endpoint then generates a URL to query our [Tick-Level Trades](/rest-api/data-feeds/level-1-and-level-2-data/level-1-tick-level/all-trades.md) endpoint where you'll see all the trades.

{% hint style="warning" %}
We support publications for up to 72 hours using this endpoint. If you require the trades for a rate published more than 72 hours ago, contact our operations team.
{% endhint %}

### Endpoint

{% code overflow="wrap" %}

```http
https://us.market-api.kaiko.io/v1/data/index_replication.v1/rates
```

{% endcode %}

### Request parameters

<table><thead><tr><th width="170">Parameter</th><th width="131">Required</th><th width="356">Description</th><th>Example</th></tr></thead><tbody><tr><td><code>sequence_id</code></td><td>Yes</td><td>List of publication ID to explore. A publication is defined by event occurring on a specific instrument at a given point in time. <br><br>Publication IDs can be retrieved from your index response. </td><td><code>cmrqt2dugrtbh9jbhlk0,cmt40b74tfbpmrtbk180</code></td></tr><tr><td><code>sort</code></td><td>No</td><td>If asc, sort time-series in ascending. If desc, sort time-series in descending.</td><td><code>asc</code></td></tr><tr><td><code>page_size</code></td><td>No</td><td><p>See <a href="https://docs.kaiko.com/kaiko-rest-api/general/getting-started/pagination">pagination</a> <br></p><p>Min: <code>1</code><br>Max: <code>100</code><br>Default: <code>10</code></p></td><td><code>100</code></td></tr></tbody></table>

### Response fields

<table><thead><tr><th width="183">Field</th><th width="316">Description</th><th>Example</th></tr></thead><tbody><tr><td><code>index_code</code></td><td>Ticker identifying the rate.</td><td><code>KK_PR_BTCUSD</code></td></tr><tr><td><code>index_type</code></td><td>Type of publication: real-time or fixings.</td><td><code>SIC_REAL_TIME</code></td></tr><tr><td><code>sequenceID</code></td><td>The publication ID to explore. A publication is defined by event occurring on a specific instrument at a given point in time. Publication IDs can be retrieved from <a href="https://sdk.kaiko.com/#tocS_kaikosdkStreamIndexServiceResponseV1">publication stream</a> response.</td><td><code>cnb0k3vvavm8ib6863qg</code></td></tr><tr><td><code>underlying_data</code></td><td>List of links to specific pre-filtered queries on the Rest API trades endpoint for the selected SequenceID.</td><td><code>[</code><br><code>"https://us.market-api.kaiko.io/v3/data/trades.v1/exchanges/bfnx/spot/btc-usd/trades?start_time=2024-02-21T14:29:55.000Z&#x26;end_time=2024-02-21T14:34:55.000Z&#x26;index_inserted_at=2024-02-21T14:34:50.863ZZ&#x26;sort=asc",</code><br><code>"https://us.market-api.kaiko.io/v3/data/trades.v1/exchanges/cbse/spot/btc-usd/trades?start_time=2024-02-21T14:29:55.000Z&#x26;end_time=2024-02-21T14:34:55.000Z&#x26;index_inserted_at=2024-02-21T14:34:50.863ZZ&#x26;sort=asc"]</code></td></tr></tbody></table>

### Request example

{% tabs %}
{% tab title="cURL" %}
{% code overflow="wrap" %}

```url
curl --compressed \
  -H 'Accept: application/json' \
  -H 'X-Api-Key: <client-api-key>' \
  'https://us.market-api.kaiko.io/v1/data/index_replication.v1/rates?sequence_id=csibfhkth8ejovmc3fcg'
```

{% endcode %}
{% endtab %}

{% tab title="Python" %}

```python
import http.client
import json

# Enter your Kaiko API Key
api_key = "KAIKO_API_KEY"
api_host = "us.market-api.kaiko.io"
api_base_endpoint = "/v1/data/index_replication.v1/rates"
# Start of mandatory parameter configuration
mandatory_params = {
    "sequence_id": "csibfhkth8ejovmc3fcg",
}
# End of mandatory parameter configuration
# Start of optional parameter configuration
optional_params = {
        "sort": "asc",
}
# End of optional parameter configuration
conn = http.client.HTTPSConnection(api_host)
headers = {
    "X-Api-Key": api_key,
    "Accept": "application/json"
}

all_params = {**mandatory_params, **optional_params}

url_params = []
for param, value in all_params.items():
    url_params.append(f"{param}={value}")
url_params = '&'.join(url_params)

endpoint_with_params = f"{api_base_endpoint}?{url_params}"

# Pagination for next pages
all_data = []
next_url = endpoint_with_params
while next_url:
    conn.request("GET", next_url, headers=headers)
    response = conn.getresponse()
    data = json.loads(response.read().decode("utf-8"))
    all_data.extend(data.get("data", []))
    print(f"Fetched {len(data.get('data', []))} datapoints. Total: {len(all_data)}")
    next_url = data.get("next_url", "").replace("https://us.market-api.kaiko.io", "")
    if not next_url:
        break
conn.close()
print(f" datapoints fetched: {(all_data)}")
```

{% endtab %}
{% endtabs %}

### Response example

{% code overflow="wrap" %}

```json
{
    "time": "2024-11-01T11:18:09.931Z",
    "timestamp": 1730459889931,
    "data": [
        {
            "index_code": "KK_BRR_BTCUSD",
            "index_type": "SIC_REAL_TIME",
            "sequence_id": "csibfhkth8ejovmc3fcg",
            "underlying_data": [
                "https://us.market-api.kaiko.io/v3/data/trades.v1/exchanges/cbse/spot/btc-usd/trades?start_time=2024-11-01T11:12:55Z&end_time=2024-11-01T11:13:10Z&index_inserted_at=2024-11-01T11:13:09.839473378Z&sort=asc",
                "https://us.market-api.kaiko.io/v3/data/trades.v1/exchanges/gmni/spot/btc-usd/trades?start_time=2024-11-01T11:12:55Z&end_time=2024-11-01T11:13:10Z&index_inserted_at=2024-11-01T11:13:09.839473378Z&sort=asc",
                "https://us.market-api.kaiko.io/v3/data/trades.v1/exchanges/krkn/spot/btc-usd/trades?start_time=2024-11-01T11:12:55Z&end_time=2024-11-01T11:13:10Z&index_inserted_at=2024-11-01T11:13:09.839473378Z&sort=asc",
                "https://us.market-api.kaiko.io/v3/data/trades.v1/exchanges/lmax/spot/btc-usd/trades?start_time=2024-11-01T11:12:55Z&end_time=2024-11-01T11:13:10Z&index_inserted_at=2024-11-01T11:13:09.839473378Z&sort=asc",
                "https://us.market-api.kaiko.io/v3/data/trades.v1/exchanges/stmp/spot/btc-usd/trades?start_time=2024-11-01T11:12:55Z&end_time=2024-11-01T11:13:10Z&index_inserted_at=2024-11-01T11:13:09.839473378Z&sort=asc"
            ]
        }
    ],
    "result": "success",
    "continuation_token": "",
    "next_url": "",
    "access": {
        "access_range": {
            "start_timestamp": 1454284800000,
            "end_timestamp": null
        },
        "data_range": {
            "start_timestamp": null,
            "end_timestamp": null
        }
    }
}
```

{% endcode %}


---

# 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.kaiko.com/kaiko-indices/reference-rates/replication-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.