# OffchainAllowlistExtension
[Git Source](https://github.com/buildship-dev/nft-contracts/blob/fd1c33a9dbefe42158dfc60d10c0afde05c713aa/contracts/extensions/OffchainAllowlistExtension.sol)

**Inherits:**
[NFTExtension](/wiki/src/contracts/extensions/base/NFTExtension.sol/contract.NFTExtension.md), Ownable, [SaleControl](/wiki/src/contracts/extensions/base/SaleControl.sol/contract.SaleControl.md), [LimitedSupply](/wiki/src/contracts/extensions/base/LimitedSupply.sol/contract.LimitedSupply.md)


## State Variables
### price

```solidity
uint256 public price;
```


### signer

```solidity
address public signer;
```


### claimedByAddress

```solidity
mapping(address => uint256) public claimedByAddress;
```


## Functions
### constructor


```solidity
constructor(address _nft, address _signer, uint256 _price, uint256 _extensionSupply)
    NFTExtension(_nft)
    SaleControl
    LimitedSupply(_extensionSupply);
```

### updatePrice


```solidity
function updatePrice(uint256 _price) public onlyOwner;
```

### updateSigner


```solidity
function updateSigner(address _signer) public onlyOwner;
```

### mint


```solidity
function mint(uint256 amount, SignedAllowance calldata allowance) external payable whenSaleStarted;
```

### isValid


```solidity
function isValid(SignedAllowance calldata allowance) public view returns (bool);
```

### calculateDigest


```solidity
function calculateDigest(address receiver, OffchainAllowlistExtension extension, uint96 amount)
    public
    pure
    returns (bytes32);
```