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openzeppelin-contracts/contracts/token/ERC721
Julian M. Rodriguez 8b58fc7191
feat: add wrapper function for low level calls (#2264)
5 years ago
..
ERC721.sol feat: add wrapper function for low level calls (#2264) 5 years ago
ERC721Burnable.sol Documentation/erc721 contracts (#2218) 5 years ago
ERC721Holder.sol Documentation/erc721 contracts (#2218) 5 years ago
ERC721Pausable.sol Add SPX license identifier (#2235) 5 years ago
IERC721.sol Documentation/erc721 contracts (#2218) 5 years ago
IERC721Enumerable.sol Add SPX license identifier (#2235) 5 years ago
IERC721Metadata.sol Add SPX license identifier (#2235) 5 years ago
IERC721Receiver.sol Documentation/erc721 contracts (#2218) 5 years ago
README.adoc Address ERC1155 changes (#2267) 5 years ago

README.adoc

= ERC 721

This set of interfaces, contracts, and utilities are all related to the https://eips.ethereum.org/EIPS/eip-721[ERC721 Non-Fungible Token Standard].

TIP: For a walkthrough on how to create an ERC721 token read our xref:ROOT:erc721.adoc[ERC721 guide].

The EIP consists of three interfaces, found here as {IERC721}, {IERC721Metadata}, and {IERC721Enumerable}. Only the first one is required in a contract to be ERC721 compliant. However, all three are implemented in {ERC721}.

Additionally, {IERC721Receiver} can be used to prevent tokens from becoming forever locked in contracts. Imagine sending an in-game item to an exchange address that can't send it back!. When using <<IERC721-safeTransferFrom,`safeTransferFrom`>>, the token contract checks to see that the receiver is an {IERC721Receiver}, which implies that it knows how to handle {ERC721} tokens. If you're writing a contract that needs to receive {ERC721} tokens, you'll want to include this interface.

Additionally there are multiple custom extensions, including:

* designation of addresses that can pause token transfers for all users ({ERC721Pausable}).
* destruction of own tokens ({ERC721Burnable}).

== Core

{{IERC721}}

{{IERC721Metadata}}

{{IERC721Enumerable}}

{{ERC721}}

{{IERC721Receiver}}

== Extensions

{{ERC721Pausable}}

{{ERC721Burnable}}

== Convenience

{{ERC721Holder}}