# ScanShieldedTrc20NotesByOvk

**Body params**: 

* `start_block_index`
* `end_block_index`
* `shielded_TRC20_contract_address`
* `ovk`
* `visible`

**`Request`**

```
curl --request POST \
     --url https://tron.api.watchdata.io/wallet/scanshieldedtrc20notesbyovk \
     --header 'Accept: application/json' \
     --header 'Content-Type: application/json' \
     --data '
{
     "start_block_index": 0,
     "end_block_index": 0,
     "shielded_TRC20_contract_address": "string",
     "ovk": "string",
     "visible": true
}
'
```

**Response** 

```
{
  "Error": "class java.lang.NullPointerException : null"
}
```