> ## Documentation Index
> Fetch the complete documentation index at: https://initialabs-docs-evm-erc20-minievm-alignment.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ERC20

GitHub:
[ERC20](https://github.com/initia-labs/initia-evm-contracts/blob/main/src/ERC20.sol)

## Overview

The `ERC20` contract is used by the
[ERC20Factory](/resources/developer/contract-references/evm/erc20-factory) to
create standard tokens. It does not self-register in the constructor—the factory
calls `register_erc20_from_factory` after deployment.

For custom ERC20 tokens with additional logic, use
[InitiaERC20](/resources/developer/contract-references/evm/initia-erc20)
instead.

## Key Features

* **metadataSealed**: Prevents metadata changes after sealing. Set via
  `updateMetadata` by authority.
* **updateMetadata**: One-time metadata update by authority (gov).
* **sudoMint / sudoBurn**: Chain signer operations for bridging and module
  interactions.

## Constructor

```solidity theme={null}
constructor(string memory _name, string memory _symbol, uint8 _decimals, bool _metadataSealed)
```

| Name              | Type            | Description                                       |
| ----------------- | --------------- | ------------------------------------------------- |
| `_name`           | `string memory` | The name of the token.                            |
| `_symbol`         | `string memory` | The symbol of the token.                          |
| `_decimals`       | `uint8`         | The number of decimals.                           |
| `_metadataSealed` | `bool`          | If true, metadata cannot be updated by authority. |