# Creating NFTs

***

## `ERC721` <a href="#erc721" id="erc721"></a>

The standard functions that have to be supported by a smart contract to fulfil the ERC721 token standard. For reference see: <https://eips.ethereum.org/EIPS/eip-721>

**FUNCTIONS**

```solidity
balanceOf(owner)
ownerOf(tokenId)
approve(to, tokenId)
getApproved(tokenId)
setApprovalForAll(to, approved)
isApprovedForAll(owner, operator)
transferFrom(from, to, tokenId)
safeTransferFrom(from, to, tokenId)
safeTransferFrom(from, to, tokenId, _data)
_safeTransferFrom(from, to, tokenId, _data)
_exists(tokenId)
_isApprovedOrOwner(spender, tokenId)
_safeMint(to, tokenId)
_safeMint(to, tokenId, _data)
_mint(to, tokenId)
_burn(owner, tokenId)
_burn(tokenId)
_transferFrom(from, to, tokenId)
_checkOnERC721Received(from, to, tokenId, _data)
```

**ERC165**

```solidity
constructor()

supportsInterface(interfaceId)

_registerInterface(interfaceId)
```

**CONTEXT**

```solidity
_msgSender()
_msgData(
```

**EVENTSIERC721**

```solidity
Transfer(from, to, tokenId)
Approval(owner, approved, tokenId)
ApprovalForAll(owner, operator, approved)
```

***

| Smart Contract                                                                                                                       | Description                                                                                                               | Blockchain                                        |
| ------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------- |
| [Standard NFT ](/for-developers/developer-platform-overview/smart-contract-templates/creating-nfts/standard-nft.md)                  | The smart contract template to deploy single-copy NFTs.This version allows you to dissociate the wallet funding gas fees. | ONINO, Ethereum, BSC, Avalanche, Polygon, Fantom, |
| [NFT with fixed supply](/for-developers/developer-platform-overview/smart-contract-templates/creating-nfts/nft-with-fixed-supply.md) | The capped ERC721 NFT smart contract template for single-copy Non Fungible Tokens (NFT).                                  | ONINO, Ethereum, BSC, Avalanche, Polygon, Fantom, |
| ERC1155 NFTs collection                                                                                                              | The smart contract standard to manage multiple-copies NFTs.                                                               | ONINO, Ethereum, BSC, Avalanche, Polygon, Fantom, |


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