# ERC721







*Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including the Metadata extension, but not including the Enumerable extension, which is available separately as {ERC721Enumerable}.*

## Methods

### approve

```solidity
function approve(address to, uint256 tokenId) external nonpayable
```



*See {IERC721-approve}.*

#### Parameters

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

### balanceOf

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



*See {IERC721-balanceOf}.*

#### Parameters

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

#### Returns

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

### getApproved

```solidity
function getApproved(uint256 tokenId) external view returns (address)
```



*See {IERC721-getApproved}.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| tokenId | uint256 | undefined |

#### Returns

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

### isApprovedForAll

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



*See {IERC721-isApprovedForAll}.*

#### Parameters

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

#### Returns

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

### name

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



*See {IERC721Metadata-name}.*


#### Returns

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

### ownerOf

```solidity
function ownerOf(uint256 tokenId) external view returns (address)
```



*See {IERC721-ownerOf}.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| tokenId | uint256 | undefined |

#### Returns

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

### safeTransferFrom

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



*See {IERC721-safeTransferFrom}.*

#### Parameters

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

### safeTransferFrom

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



*See {IERC721-safeTransferFrom}.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| from | address | undefined |
| to | address | undefined |
| tokenId | uint256 | undefined |
| data | bytes | undefined |

### setApprovalForAll

```solidity
function setApprovalForAll(address operator, bool approved) external nonpayable
```



*See {IERC721-setApprovalForAll}.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| operator | address | undefined |
| approved | bool | undefined |

### supportsInterface

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



*See {IERC165-supportsInterface}.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| interfaceId | bytes4 | undefined |

#### Returns

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

### symbol

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



*See {IERC721Metadata-symbol}.*


#### Returns

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

### tokenURI

```solidity
function tokenURI(uint256 tokenId) external view returns (string)
```



*See {IERC721Metadata-tokenURI}.*

#### Parameters

| Name | Type | Description |
|---|---|---|
| tokenId | uint256 | undefined |

#### Returns

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

### transferFrom

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



*See {IERC721-transferFrom}.*

#### Parameters

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



## Events

### Approval

```solidity
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

```solidity
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 |

### Transfer

```solidity
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 |