ITokenERC721

SignatureMint is an ERC 721 contract. It lets anyone mint NFTs by producing a mint request and a signature (produced by an account with MINTER_ROLE, signing the mint request).

Methods

approve

function approve(address to, uint256 tokenId) external nonpayable

Gives permission to to to transfer tokenId token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - tokenId must exist. Emits an {Approval} event.

Parameters

Name
Type
Description

to

address

undefined

tokenId

uint256

undefined

balanceOf

function balanceOf(address owner) external view returns (uint256 balance)

Returns the number of tokens in owner's account.

Parameters

Name
Type
Description

owner

address

undefined

Returns

Name
Type
Description

balance

uint256

undefined

getApproved

function getApproved(uint256 tokenId) external view returns (address operator)

Returns the account approved for tokenId token. Requirements: - tokenId must exist.

Parameters

Name
Type
Description

tokenId

uint256

undefined

Returns

Name
Type
Description

operator

address

undefined

isApprovedForAll

function isApprovedForAll(address owner, address operator) external view returns (bool)

Returns if the operator is allowed to manage all of the assets of owner. See {setApprovalForAll}

Parameters

Name
Type
Description

owner

address

undefined

operator

address

undefined

Returns

Name
Type
Description

_0

bool

undefined

mintTo

function mintTo(address to, string uri) external nonpayable returns (uint256)

Lets an account with MINTER_ROLE mint an NFT.

Parameters

Name
Type
Description

to

address

The address to mint the NFT to.

uri

string

The URI to assign to the NFT.

Returns

Name
Type
Description

_0

uint256

tokenId of the NFT minted.

mintWithSignature

function mintWithSignature(ITokenERC721.MintRequest req, bytes signature) external payable returns (uint256)

Parameters

Name
Type
Description

req

ITokenERC721.MintRequest

undefined

signature

bytes

undefined

Returns

Name
Type
Description

_0

uint256

undefined

ownerOf

function ownerOf(uint256 tokenId) external view returns (address owner)

Returns the owner of the tokenId token. Requirements: - tokenId must exist.

Parameters

Name
Type
Description

tokenId

uint256

undefined

Returns

Name
Type
Description

owner

address

undefined

safeTransferFrom

function safeTransferFrom(address from, address to, uint256 tokenId) external nonpayable

Safely transfers tokenId token from from to to, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - from cannot be the zero address. - to cannot be the zero address. - tokenId token must exist and be owned by from. - If the caller is not from, it must have been allowed to move this token by either {approve} or {setApprovalForAll}. - If to refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. Emits a {Transfer} event.

Parameters

Name
Type
Description

from

address

undefined

to

address

undefined

tokenId

uint256

undefined

safeTransferFrom

function safeTransferFrom(address from, address to, uint256 tokenId, bytes data) external nonpayable

Safely transfers tokenId token from from to to. Requirements: - from cannot be the zero address. - to cannot be the zero address. - tokenId token must exist and be owned by from. - If the caller is not from, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If to refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. Emits a {Transfer} event.

Parameters

Name
Type
Description

from

address

undefined

to

address

undefined

tokenId

uint256

undefined

data

bytes

undefined

setApprovalForAll

function setApprovalForAll(address operator, bool _approved) external nonpayable

Approve or remove operator as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The operator cannot be the caller. Emits an {ApprovalForAll} event.

Parameters

Name
Type
Description

operator

address

undefined

_approved

bool

undefined

supportsInterface

function supportsInterface(bytes4 interfaceId) external view returns (bool)

Returns true if this contract implements the interface defined by interfaceId. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.

Parameters

Name
Type
Description

interfaceId

bytes4

undefined

Returns

Name
Type
Description

_0

bool

undefined

transferFrom

function transferFrom(address from, address to, uint256 tokenId) external nonpayable

Transfers tokenId token from from to to. WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. Requirements: - from cannot be the zero address. - to cannot be the zero address. - tokenId token must be owned by from. - If the caller is not from, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event.

Parameters

Name
Type
Description

from

address

undefined

to

address

undefined

tokenId

uint256

undefined

verify

function verify(ITokenERC721.MintRequest req, bytes signature) external view returns (bool success, address signer)

Parameters

Name
Type
Description

req

ITokenERC721.MintRequest

undefined

signature

bytes

undefined

Returns

Name
Type
Description

success

bool

undefined

signer

address

undefined

Events

Approval

event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId)

Parameters

Name
Type
Description

owner indexed

address

undefined

approved indexed

address

undefined

tokenId indexed

uint256

undefined

ApprovalForAll

event ApprovalForAll(address indexed owner, address indexed operator, bool approved)

Parameters

Name
Type
Description

owner indexed

address

undefined

operator indexed

address

undefined

approved

bool

undefined

TokensMinted

event TokensMinted(address indexed mintedTo, uint256 indexed tokenIdMinted, string uri)

Emitted when an account with MINTER_ROLE mints an NFT.

Parameters

Name
Type
Description

mintedTo indexed

address

undefined

tokenIdMinted indexed

uint256

undefined

uri

string

undefined

TokensMintedWithSignature

event TokensMintedWithSignature(address indexed signer, address indexed mintedTo, uint256 indexed tokenIdMinted, ITokenERC721.MintRequest mintRequest)

Emitted when tokens are minted.

Parameters

Name
Type
Description

signer indexed

address

undefined

mintedTo indexed

address

undefined

tokenIdMinted indexed

uint256

undefined

mintRequest

ITokenERC721.MintRequest

undefined

Transfer

event Transfer(address indexed from, address indexed to, uint256 indexed tokenId)

Parameters

Name
Type
Description

from indexed

address

undefined

to indexed

address

undefined

tokenId indexed

uint256

undefined

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