# z\_shieldcoinbase {disallowed} - Zcash

#### Parameters

`fromaddresses` - string

The address is a taddr or "\*" for all taddrs belonging to the wallet.

`toaddresses` - string

The address is a zaddr.

`fee` - numeric

Optional, default=0.00001

The fee amount to attach to this transaction.

`limit` - numeric

Optional, default=50

Limit on the maximum number of utxos to shield. Set to 0 to use as many as will fit in the transaction.

#### Request

```java
curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{"jsonrpc": "2.0",
"method": "z_shieldcoinbase",
"params": [null, null, null, null],
"id": "getblock.io"}'
```

#### Response

```java
{
    "result": "null",
    "id": "getblock.io",
    "status_code": 405,
    "message": "Method not allowed"
}
```


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