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Automatically merged updates to draft EIP(s) 721
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William Entriken
EIP Automerge Bot
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@ -45,7 +45,7 @@ pragma solidity ^0.4.20;
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/// @title ERC-721 Non-Fungible Token Standard
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/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md
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/// Note: the ERC-165 identifier for this interface is 0x80ac58cd
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/// Note: the ERC-165 identifier for this interface is 0x80ac58cd.
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interface ERC721 /* is ERC165 */ {
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/// @dev This emits when ownership of any NFT changes by any mechanism.
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/// This event emits when NFTs are created (`from` == 0) and destroyed
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@ -94,7 +94,7 @@ interface ERC721 /* is ERC165 */ {
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/// @notice Transfers the ownership of an NFT from one address to another address
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/// @dev This works identically to the other function with an extra data parameter,
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/// except this function just sets data to ""
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/// except this function just sets data to "".
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/// @param _from The current owner of the NFT
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/// @param _to The new owner
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/// @param _tokenId The NFT to transfer
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@ -112,24 +112,24 @@ interface ERC721 /* is ERC165 */ {
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/// @param _tokenId The NFT to transfer
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function transferFrom(address _from, address _to, uint256 _tokenId) external payable;
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/// @notice Change or reaffirm the approved address for an NFT.
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/// @notice Change or reaffirm the approved address for an NFT
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/// @dev The zero address indicates there is no approved address.
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/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized
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/// Throws unless `msg.sender` is the current NFT owner, or an authorized
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/// operator of the current owner.
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/// @param _approved The new approved NFT controller
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/// @param _tokenId The NFT to approve
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function approve(address _approved, uint256 _tokenId) external payable;
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/// @notice Enable or disable approval for a third party ("operator") to manage
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/// all of `msg.sender`'s assets.
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/// all of `msg.sender`'s assets
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/// @dev Emits the ApprovalForAll event. The contract MUST allow
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/// multiple operators per owner.
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/// @param _operator Address to add to the set of authorized operators.
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/// @param _operator Address to add to the set of authorized operators
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/// @param _approved True if the operator is approved, false to revoke approval
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function setApprovalForAll(address _operator, bool _approved) external;
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/// @notice Get the approved address for a single NFT
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/// @dev Throws if `_tokenId` is not a valid NFT
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/// @dev Throws if `_tokenId` is not a valid NFT.
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/// @param _tokenId The NFT to find the approved address for
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/// @return The approved address for this NFT, or the zero address if there is none
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function getApproved(uint256 _tokenId) external view returns (address);
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@ -155,8 +155,8 @@ interface ERC165 {
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A wallet/broker/auction application MUST implement the **wallet interface** if it will accept safe transfers.
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```solidity
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/// @dev Note: the ERC-165 identifier for this interface is 0xf0b9e5ba
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/// @dev Note: the application will get the prior owner of the token
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/// @dev Note: the ERC-165 identifier for this interface is 0xf0b9e5ba.
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/// Note: the application will get the prior owner of the token
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/// via _from parameter -- but it will NOT see who called safeTransferFrom.
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interface ERC721TokenReceiver {
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/// @notice Handle the receipt of an NFT
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@ -165,7 +165,7 @@ interface ERC721TokenReceiver {
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/// transfer. Return of other than the magic value MUST result in the
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/// transaction being reverted.
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/// Note: the contract address is always the message sender.
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/// @param _from The address which previously owned the token.
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/// @param _from The address which previously owned the token
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/// @param _tokenId The NFT identifier which is being transfered
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/// @param data Additional data with no specified format
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/// @return `bytes4(keccak256("onERC721Received(address,uint256,bytes)"))`
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@ -179,7 +179,7 @@ The **metadata extension** is OPTIONAL for ERC-721 smart contracts (see "caveats
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```solidity
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/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension
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/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md
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/// Note: the ERC-165 identifier for this interface is 0x5b5e139f
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/// Note: the ERC-165 identifier for this interface is 0x5b5e139f.
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interface ERC721Metadata /* is ERC721 */ {
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/// @notice A descriptive name for a collection of NFTs in this contract
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function name() external view returns (string _name);
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@ -223,7 +223,7 @@ The **enumeration extension** is OPTIONAL for ERC-721 smart contracts (see "cave
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```solidity
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/// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
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/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md
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/// Note: the ERC-165 identifier for this interface is 0x780e9d63
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/// Note: the ERC-165 identifier for this interface is 0x780e9d63.
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interface ERC721Enumerable /* is ERC721 */ {
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/// @notice Count NFTs tracked by this contract
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/// @return A count of valid NFTs tracked by this contract, where each one of
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