Documentation / API reference / Chain
Get Historical Runtime Version
Reference
Last reviewed 2026-09-18
Returns historical chain runtime version records with their block numbers and timestamps.
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Parameters
| Name | In | Type | Required | Description |
|---|---|---|---|---|
block_start | query | integer (int32) | block number for start of range | |
block_end | query | integer (int32) | End of block range (inclusive) | |
timestamp_start | query | integer (int64) | Start of timestamp range in Unix timestamp (seconds since 1970-01-01) (inclusive) | |
timestamp_end | query | integer (int64) | End of timestamp range in Unix timestamp (seconds since 1970-01-01) (inclusive) | |
page | query | integer (int32) | The page number of the response. | |
limit | query | integer (int32) | The number of responses. max is 200, | |
order | query | string | One of block_number_asc, block_number_desc, timestamp_asc, timestamp_desc. |
Responses
200 — Runtime version history retrieved successfully
| Field | Type | Required |
|---|---|---|
data | array | Yes |
data[].block_number | integer (int32) | Yes |
data[].runtime_version | integer (int32) | Yes |
data[].timestamp | string (date-time) | Yes |
pagination | object | Yes |
pagination.current_page | integer (int32) | Yes |
pagination.next_page | integer (int32), nullable | |
pagination.per_page | integer (int32) | Yes |
pagination.prev_page | integer (int32), nullable | |
pagination.total_items | integer (int32) | Yes |
pagination.total_pages | integer (int32) | Yes |
Example response
json
{
"data": [
{
"block_number": 4345556,
"runtime_version": 210,
"timestamp": "2024-11-25T21:35:36Z"
},
{
"block_number": 4211302,
"runtime_version": 206,
"timestamp": "2024-11-07T04:21:48.001Z"
}
],
"pagination": {
"current_page": 1,
"next_page": 2,
"per_page": 50,
"prev_page": null,
"total_items": 70,
"total_pages": 2
}
}Response details
text
{
"block_number": 5328895,
"timestamp": "2025-04-11T15:32:36Z",
"runtime_version": 261
}Other responses
| Status | Meaning |
|---|---|
400 | Bad request |
404 | Runtime version history not found |
500 | Internal server error |
Every request needs an Authorization header holding your API key — see Getting started with the Taostats API.