> For the complete documentation index, see [llms.txt](https://the-artist-xchange.gitbook.io/the-artist-xchange/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://the-artist-xchange.gitbook.io/the-artist-xchange/docs/erc20signaturemintvote.md).

# ERC20SignatureMintVote

BASE: ERC20Vote EXTENSION: SignatureMintERC20 The `ERC20SignatureMint` contract uses the `ERC20Vote` contract, along with the `SignatureMintERC20` extension. The 'signature minting' mechanism in the `SignatureMintERC20` extension uses EIP 712, and is a way for a contract admin to authorize an external party's request to mint tokens on the admin's contract. At a high level, this means you can authorize some external party to mint tokens on your contract, and specify what exactly will be minted by that external party.

## Methods

### DOMAIN\_SEPARATOR

```solidity
function DOMAIN_SEPARATOR() external view returns (bytes32)
```

*See {IERC20Permit-DOMAIN\_SEPARATOR}.*

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | bytes32 | undefined   |

### allowance

```solidity
function allowance(address owner, address spender) external view returns (uint256)
```

*See {IERC20-allowance}.*

#### Parameters

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| owner   | address | undefined   |
| spender | address | undefined   |

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |

### approve

```solidity
function approve(address spender, uint256 amount) external nonpayable returns (bool)
```

*See {IERC20-approve}. NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on `transferFrom`. This is semantically equivalent to an infinite approval. Requirements: - `spender` cannot be the zero address.*

#### Parameters

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| spender | address | undefined   |
| amount  | uint256 | undefined   |

#### Returns

| Name | Type | Description |
| ---- | ---- | ----------- |
| \_0  | bool | undefined   |

### balanceOf

```solidity
function balanceOf(address account) external view returns (uint256)
```

*See {IERC20-balanceOf}.*

#### Parameters

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| account | address | undefined   |

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |

### burn

```solidity
function burn(uint256 _amount) external nonpayable
```

Lets an owner a given amount of their tokens.

*Caller should own the `_amount` of tokens.*

#### Parameters

| Name     | Type    | Description                   |
| -------- | ------- | ----------------------------- |
| \_amount | uint256 | The number of tokens to burn. |

### checkpoints

```solidity
function checkpoints(address account, uint32 pos) external view returns (struct ERC20Votes.Checkpoint)
```

*Get the `pos`-th checkpoint for `account`.*

#### Parameters

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| account | address | undefined   |
| pos     | uint32  | undefined   |

#### Returns

| Name | Type                  | Description |
| ---- | --------------------- | ----------- |
| \_0  | ERC20Votes.Checkpoint | undefined   |

### contractURI

```solidity
function contractURI() external view returns (string)
```

Returns the contract metadata URI.

#### Returns

| Name | Type   | Description |
| ---- | ------ | ----------- |
| \_0  | string | undefined   |

### decimals

```solidity
function decimals() external view returns (uint8)
```

*Returns the number of decimals used to get its user representation. For example, if `decimals` equals `2`, a balance of `505` tokens should be displayed to a user as `5.05` (`505 / 10 ** 2`). Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei. This is the value {ERC20} uses, unless this function is overridden; NOTE: This information is only used for display purposes: it in no way affects any of the arithmetic of the contract, including {IERC20-balanceOf} and {IERC20-transfer}.*

#### Returns

| Name | Type  | Description |
| ---- | ----- | ----------- |
| \_0  | uint8 | undefined   |

### decreaseAllowance

```solidity
function decreaseAllowance(address spender, uint256 subtractedValue) external nonpayable returns (bool)
```

*Atomically decreases the allowance granted to `spender` by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - `spender` cannot be the zero address. - `spender` must have allowance for the caller of at least `subtractedValue`.*

#### Parameters

| Name            | Type    | Description |
| --------------- | ------- | ----------- |
| spender         | address | undefined   |
| subtractedValue | uint256 | undefined   |

#### Returns

| Name | Type | Description |
| ---- | ---- | ----------- |
| \_0  | bool | undefined   |

### delegate

```solidity
function delegate(address delegatee) external nonpayable
```

*Delegate votes from the sender to `delegatee`.*

#### Parameters

| Name      | Type    | Description |
| --------- | ------- | ----------- |
| delegatee | address | undefined   |

### delegateBySig

```solidity
function delegateBySig(address delegatee, uint256 nonce, uint256 expiry, uint8 v, bytes32 r, bytes32 s) external nonpayable
```

*Delegates votes from signer to `delegatee`*

#### Parameters

| Name      | Type    | Description |
| --------- | ------- | ----------- |
| delegatee | address | undefined   |
| nonce     | uint256 | undefined   |
| expiry    | uint256 | undefined   |
| v         | uint8   | undefined   |
| r         | bytes32 | undefined   |
| s         | bytes32 | undefined   |

### delegates

```solidity
function delegates(address account) external view returns (address)
```

*Get the address `account` is currently delegating to.*

#### Parameters

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| account | address | undefined   |

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | address | undefined   |

### getPastTotalSupply

```solidity
function getPastTotalSupply(uint256 blockNumber) external view returns (uint256)
```

*Retrieve the `totalSupply` at the end of `blockNumber`. Note, this value is the sum of all balances. It is but NOT the sum of all the delegated votes! Requirements: - `blockNumber` must have been already mined*

#### Parameters

| Name        | Type    | Description |
| ----------- | ------- | ----------- |
| blockNumber | uint256 | undefined   |

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |

### getPastVotes

```solidity
function getPastVotes(address account, uint256 blockNumber) external view returns (uint256)
```

*Retrieve the number of votes for `account` at the end of `blockNumber`. Requirements: - `blockNumber` must have been already mined*

#### Parameters

| Name        | Type    | Description |
| ----------- | ------- | ----------- |
| account     | address | undefined   |
| blockNumber | uint256 | undefined   |

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |

### getVotes

```solidity
function getVotes(address account) external view returns (uint256)
```

*Gets the current votes balance for `account`*

#### Parameters

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| account | address | undefined   |

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |

### increaseAllowance

```solidity
function increaseAllowance(address spender, uint256 addedValue) external nonpayable returns (bool)
```

*Atomically increases the allowance granted to `spender` by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - `spender` cannot be the zero address.*

#### Parameters

| Name       | Type    | Description |
| ---------- | ------- | ----------- |
| spender    | address | undefined   |
| addedValue | uint256 | undefined   |

#### Returns

| Name | Type | Description |
| ---- | ---- | ----------- |
| \_0  | bool | undefined   |

### mintTo

```solidity
function mintTo(address _to, uint256 _amount) external nonpayable
```

Lets an authorized address mint tokens to a recipient.

*The logic in the `_canMint` function determines whether the caller is authorized to mint tokens.*

#### Parameters

| Name     | Type    | Description                          |
| -------- | ------- | ------------------------------------ |
| \_to     | address | The recipient of the tokens to mint. |
| \_amount | uint256 | Quantity of tokens to mint.          |

### mintWithSignature

```solidity
function mintWithSignature(ISignatureMintERC20.MintRequest _req, bytes _signature) external payable returns (address signer)
```

#### Parameters

| Name        | Type                            | Description |
| ----------- | ------------------------------- | ----------- |
| \_req       | ISignatureMintERC20.MintRequest | undefined   |
| \_signature | bytes                           | undefined   |

#### Returns

| Name   | Type    | Description |
| ------ | ------- | ----------- |
| signer | address | undefined   |

### multicall

```solidity
function multicall(bytes[] data) external nonpayable returns (bytes[] results)
```

Receives and executes a batch of function calls on this contract.

*Receives and executes a batch of function calls on this contract.*

#### Parameters

| Name | Type     | Description                                                          |
| ---- | -------- | -------------------------------------------------------------------- |
| data | bytes\[] | The bytes data that makes up the batch of function calls to execute. |

#### Returns

| Name    | Type     | Description                                                                      |
| ------- | -------- | -------------------------------------------------------------------------------- |
| results | bytes\[] | The bytes data that makes up the result of the batch of function calls executed. |

### name

```solidity
function name() external view returns (string)
```

*Returns the name of the token.*

#### Returns

| Name | Type   | Description |
| ---- | ------ | ----------- |
| \_0  | string | undefined   |

### nonces

```solidity
function nonces(address owner) external view returns (uint256)
```

*See {IERC20Permit-nonces}.*

#### Parameters

| Name  | Type    | Description |
| ----- | ------- | ----------- |
| owner | address | undefined   |

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |

### numCheckpoints

```solidity
function numCheckpoints(address account) external view returns (uint32)
```

*Get number of checkpoints for `account`.*

#### Parameters

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| account | address | undefined   |

#### Returns

| Name | Type   | Description |
| ---- | ------ | ----------- |
| \_0  | uint32 | undefined   |

### owner

```solidity
function owner() external view returns (address)
```

Returns the owner of the contract.

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | address | undefined   |

### permit

```solidity
function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external nonpayable
```

*See {IERC20Permit-permit}.*

#### Parameters

| Name     | Type    | Description |
| -------- | ------- | ----------- |
| owner    | address | undefined   |
| spender  | address | undefined   |
| value    | uint256 | undefined   |
| deadline | uint256 | undefined   |
| v        | uint8   | undefined   |
| r        | bytes32 | undefined   |
| s        | bytes32 | undefined   |

### primarySaleRecipient

```solidity
function primarySaleRecipient() external view returns (address)
```

*Returns primary sale recipient address.*

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | address | undefined   |

### setContractURI

```solidity
function setContractURI(string _uri) external nonpayable
```

Lets a contract admin set the URI for contract-level metadata.

*Caller should be authorized to setup contractURI, e.g. contract admin. See {\_canSetContractURI}. Emits {ContractURIUpdated Event}.*

#### Parameters

| Name  | Type   | Description                                                  |
| ----- | ------ | ------------------------------------------------------------ |
| \_uri | string | keccak256 hash of the role. e.g. keccak256("TRANSFER\_ROLE") |

### setOwner

```solidity
function setOwner(address _newOwner) external nonpayable
```

Lets an authorized wallet set a new owner for the contract.

#### Parameters

| Name       | Type    | Description                                          |
| ---------- | ------- | ---------------------------------------------------- |
| \_newOwner | address | The address to set as the new owner of the contract. |

### setPrimarySaleRecipient

```solidity
function setPrimarySaleRecipient(address _saleRecipient) external nonpayable
```

Updates primary sale recipient.

*Caller should be authorized to set primary sales info. See {\_canSetPrimarySaleRecipient}. Emits {PrimarySaleRecipientUpdated Event}; See {\_setupPrimarySaleRecipient}.*

#### Parameters

| Name            | Type    | Description                                          |
| --------------- | ------- | ---------------------------------------------------- |
| \_saleRecipient | address | Address to be set as new recipient of primary sales. |

### symbol

```solidity
function symbol() external view returns (string)
```

*Returns the symbol of the token, usually a shorter version of the name.*

#### Returns

| Name | Type   | Description |
| ---- | ------ | ----------- |
| \_0  | string | undefined   |

### totalSupply

```solidity
function totalSupply() external view returns (uint256)
```

*See {IERC20-totalSupply}.*

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |

### transfer

```solidity
function transfer(address to, uint256 amount) external nonpayable returns (bool)
```

*See {IERC20-transfer}. Requirements: - `to` cannot be the zero address. - the caller must have a balance of at least `amount`.*

#### Parameters

| Name   | Type    | Description |
| ------ | ------- | ----------- |
| to     | address | undefined   |
| amount | uint256 | undefined   |

#### Returns

| Name | Type | Description |
| ---- | ---- | ----------- |
| \_0  | bool | undefined   |

### transferFrom

```solidity
function transferFrom(address from, address to, uint256 amount) external nonpayable returns (bool)
```

*See {IERC20-transferFrom}. Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. See the note at the beginning of {ERC20}. NOTE: Does not update the allowance if the current allowance is the maximum `uint256`. Requirements: - `from` and `to` cannot be the zero address. - `from` must have a balance of at least `amount`. - the caller must have allowance for `from`'s tokens of at least `amount`.*

#### Parameters

| Name   | Type    | Description |
| ------ | ------- | ----------- |
| from   | address | undefined   |
| to     | address | undefined   |
| amount | uint256 | undefined   |

#### Returns

| Name | Type | Description |
| ---- | ---- | ----------- |
| \_0  | bool | undefined   |

### verify

```solidity
function verify(ISignatureMintERC20.MintRequest _req, bytes _signature) external view returns (bool success, address signer)
```

#### Parameters

| Name        | Type                            | Description |
| ----------- | ------------------------------- | ----------- |
| \_req       | ISignatureMintERC20.MintRequest | undefined   |
| \_signature | bytes                           | undefined   |

#### Returns

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| success | bool    | undefined   |
| signer  | address | undefined   |

## Events

### Approval

```solidity
event Approval(address indexed owner, address indexed spender, uint256 value)
```

#### Parameters

| Name              | Type    | Description |
| ----------------- | ------- | ----------- |
| owner `indexed`   | address | undefined   |
| spender `indexed` | address | undefined   |
| value             | uint256 | undefined   |

### ContractURIUpdated

```solidity
event ContractURIUpdated(string prevURI, string newURI)
```

#### Parameters

| Name    | Type   | Description |
| ------- | ------ | ----------- |
| prevURI | string | undefined   |
| newURI  | string | undefined   |

### DelegateChanged

```solidity
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate)
```

#### Parameters

| Name                   | Type    | Description |
| ---------------------- | ------- | ----------- |
| delegator `indexed`    | address | undefined   |
| fromDelegate `indexed` | address | undefined   |
| toDelegate `indexed`   | address | undefined   |

### DelegateVotesChanged

```solidity
event DelegateVotesChanged(address indexed delegate, uint256 previousBalance, uint256 newBalance)
```

#### Parameters

| Name               | Type    | Description |
| ------------------ | ------- | ----------- |
| delegate `indexed` | address | undefined   |
| previousBalance    | uint256 | undefined   |
| newBalance         | uint256 | undefined   |

### OwnerUpdated

```solidity
event OwnerUpdated(address indexed prevOwner, address indexed newOwner)
```

#### Parameters

| Name                | Type    | Description |
| ------------------- | ------- | ----------- |
| prevOwner `indexed` | address | undefined   |
| newOwner `indexed`  | address | undefined   |

### PrimarySaleRecipientUpdated

```solidity
event PrimarySaleRecipientUpdated(address indexed recipient)
```

#### Parameters

| Name                | Type    | Description |
| ------------------- | ------- | ----------- |
| recipient `indexed` | address | undefined   |

### TokensMintedWithSignature

```solidity
event TokensMintedWithSignature(address indexed signer, address indexed mintedTo, ISignatureMintERC20.MintRequest mintRequest)
```

#### Parameters

| Name               | Type                            | Description |
| ------------------ | ------------------------------- | ----------- |
| signer `indexed`   | address                         | undefined   |
| mintedTo `indexed` | address                         | undefined   |
| mintRequest        | ISignatureMintERC20.MintRequest | undefined   |

### Transfer

```solidity
event Transfer(address indexed from, address indexed to, uint256 value)
```

#### Parameters

| Name           | Type    | Description |
| -------------- | ------- | ----------- |
| from `indexed` | address | undefined   |
| to `indexed`   | address | undefined   |
| value          | uint256 | undefined   |