#### URL Expired

The URL for this request expired after 30 days.

Optional metadata when starting an operation.

| Field | Type | Description |
| :-- | :-- | :-- |
| OperationID | string | Unique operation identifier. |
| InitiatorID | string | Initiator identifier. |
| ChainName | string | required |
| TestNet | boolean | true/false |
| CAIP19 | string | required |
| NativeAssetSymbol | string | required |
| NativeAssetDecimals | integer | |

# `` 200      Operation started

# `` 400      Invalid input, validation error, or malformed request

# `` 500      Internal server error. May include an `errorCode` (M-prefixed) and `data` from the MPA error code system. See `cwpapi/errors.go` for codes.

---

### Base URL

https://api.your-wallet.blockdaemon-wallet.com/api/cwp/operations/start/registerCustomChain

```
curl --request POST \
     --url https://api.your-wallet.blockdaemon-wallet.com/api/cwp/operations/start/registerCustomChain \
     --header 'accept: application/json' \
     --header 'content-type: application/json'
```

Click `Try It!` to start a request and see the response here! Or choose an example:

application/json

``200``400``500

---