# blacklist

### Description

Add or remove the specified address from the blacklist by the token owner, only for tokens in "Deploy - Issue" Mode.

### Transaction Fee

1 KAS minimum required for "add"; no additional fee required for "remove".

### Parameters

JSON format example:

{% code overflow="wrap" %}

```json
{"p":"krc-20","op":"blacklist","ca":"a0183c1f...","mod":"add","to":"kaspa:..."}
```

{% endcode %}

Enabled when ( DaaScore >= 110165000 ).

<table><thead><tr><th width="183">Key</th><th width="135.33333333333331">Required?</th><th>Description</th></tr></thead><tbody><tr><td>p</td><td>Yes</td><td>Protocol header. <strong>Must be "krc-20"</strong> (case-insensitive)<strong>.</strong></td></tr><tr><td>op</td><td>Yes</td><td>Operation. <strong>Must be "blacklist"</strong> (case-insensitive).</td></tr><tr><td>ca</td><td>Yes</td><td>Contract address of the token.</td></tr><tr><td>mod</td><td>Yes</td><td>Operation mode. <strong>Must be "add" or "remove".</strong></td></tr><tr><td>to</td><td>Yes</td><td>The target address.</td></tr></tbody></table>