> ## Documentation Index
> Fetch the complete documentation index at: https://base-a060aa97-docs-add-b20-spec.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# IB20.DEFAULT_ADMIN_ROLE

> Generated B20 reference for DEFAULT_ADMIN_ROLE().

[Related concept](/base-chain/specs/upgrades/beryl/b20)

## Signature

```solidity theme={null}
function DEFAULT_ADMIN_ROLE() external view returns (bytes32);
```

| Field               | Value                  |
| ------------------- | ---------------------- |
| Selector            | `0xa217fddf`           |
| Canonical signature | `DEFAULT_ADMIN_ROLE()` |

## Description

The default top-level admin role (`bytes32(0)`). Required to call `grantRole`, `revokeRole`,
`setRoleAdmin`, `updatePolicy`, and `updateSupplyCap`.
Return: Role constant.

## Access control

Read-only or ERC-20-standard access rules unless the NatSpec states otherwise.

## Policy interaction

No direct policy interaction.

## Example

```solidity theme={null}
IB20(target).DEFAULT_ADMIN_ROLE();
```

## Related

* [IB20 reference](/base-chain/specs/upgrades/beryl/b20/specification/reference/interfaces/IB20)
* [Constants & addresses](/base-chain/specs/upgrades/beryl/b20/specification/reference/constants-and-addresses)