# Verify the fixing chain (/api-reference/fixings/verify-the-fixing-chain)

## Verify the fixing chain

`GET https://data.tryopengrid.com/v1/fixings/chain/verify`

Check the hash chain over the whole fixings ledger (paged).

### Parameters

- `from_seq` (query, any)
- `limit` (query, integer)
- `OpenGrid-Version` (header, string): The API version to shape the response for. Default: the version pinned to your key.

### Response `data`

- `break_count` (number)
- `breaks` (array)
- `checked` (number)
- `from_seq` (null)
- `head_hash` (string)
- `head_seq` (null)
- `ledger_rows` (number)
- `next_seq` (null)
- `ok` (boolean)
- `result` (string)
- `to_seq` (null)

Every success is `{"data": ..., "meta": {as_of, api_version, request_id, next_cursor?}}`.

### Example

```bash
curl "https://data.tryopengrid.com/v1/fixings/chain/verify" \
  -H "Authorization: Bearer $OPENGRID_API_KEY"
```