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Latest 25 from a total of 1,345 transactions
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Buy Tokens | 15799809 | 661 days ago | IN | 0 ETH | 0.00418081 | ||||
Buy Tokens | 15680610 | 678 days ago | IN | 0.1 ETH | 0.00088983 | ||||
Buy Tokens | 15680605 | 678 days ago | IN | 0.25 ETH | 0.00096015 | ||||
Buy Tokens | 15376651 | 724 days ago | IN | 0 ETH | 0.00069154 | ||||
Buy Tokens | 14647230 | 842 days ago | IN | 0 ETH | 0.00510866 | ||||
Buy Tokens | 13596646 | 1005 days ago | IN | 0 ETH | 0.03577699 | ||||
Buy Tokens | 13075154 | 1087 days ago | IN | 0 ETH | 0.00579459 | ||||
Buy Tokens | 13073202 | 1087 days ago | IN | 0 ETH | 0.00347141 | ||||
Buy Tokens | 12876624 | 1118 days ago | IN | 0 ETH | 0.00362181 | ||||
Buy Tokens | 12876624 | 1118 days ago | IN | 0.1 ETH | 0.00323922 | ||||
Buy Tokens | 12561322 | 1167 days ago | IN | 0 ETH | 0.00409844 | ||||
Buy Tokens | 12402966 | 1191 days ago | IN | 0 ETH | 0.02028727 | ||||
Buy Tokens | 12153304 | 1230 days ago | IN | 0.1 ETH | 0.0307067 | ||||
Buy Tokens | 12153285 | 1230 days ago | IN | 0.1 ETH | 0.02789816 | ||||
Buy Tokens | 12133723 | 1233 days ago | IN | 0 ETH | 0.02320275 | ||||
Buy Tokens | 11982316 | 1256 days ago | IN | 0.1 ETH | 0.01273286 | ||||
Buy Tokens | 11982257 | 1256 days ago | IN | 0.1 ETH | 0.01217034 | ||||
Buy Tokens | 11982219 | 1256 days ago | IN | 0.1 ETH | 0.01346644 | ||||
Buy Tokens | 11582647 | 1317 days ago | IN | 0 ETH | 0.092811 | ||||
Buy Tokens | 11547881 | 1323 days ago | IN | 0 ETH | 0.01484976 | ||||
Buy Tokens | 11386481 | 1348 days ago | IN | 0 ETH | 0.00349154 | ||||
Buy Tokens | 11189108 | 1378 days ago | IN | 0 ETH | 0.00389806 | ||||
Buy Tokens | 10718841 | 1450 days ago | IN | 0 ETH | 0.01039483 | ||||
Buy Tokens | 10117843 | 1543 days ago | IN | 0 ETH | 0.00044 | ||||
Buy Tokens | 10079183 | 1549 days ago | IN | 0.1 ETH | 0.00198048 |
Latest 25 internal transactions (View All)
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Parent Transaction Hash | Block | From | To | |||
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15680610 | 678 days ago | 0.1 ETH | ||||
15680605 | 678 days ago | 0.25 ETH | ||||
12876624 | 1118 days ago | 0.1 ETH | ||||
12153304 | 1230 days ago | 0.1 ETH | ||||
12153285 | 1230 days ago | 0.1 ETH | ||||
11982316 | 1256 days ago | 0.1 ETH | ||||
11982257 | 1256 days ago | 0.1 ETH | ||||
11982219 | 1256 days ago | 0.1 ETH | ||||
10079183 | 1549 days ago | 0.1 ETH | ||||
9640427 | 1617 days ago | 0.1 ETH | ||||
9630216 | 1619 days ago | 0.1 ETH | ||||
8829836 | 1750 days ago | 0.1 ETH | ||||
8728427 | 1766 days ago | 0.1 ETH | ||||
8667276 | 1776 days ago | 0.1 ETH | ||||
8531267 | 1797 days ago | 0.35 ETH | ||||
8023783 | 1876 days ago | 0.1 ETH | ||||
7992943 | 1881 days ago | 0.1 ETH | ||||
7686503 | 1929 days ago | 0.1 ETH | ||||
7617814 | 1940 days ago | 0.1 ETH | ||||
7524139 | 1954 days ago | 0.5 ETH | ||||
7502011 | 1958 days ago | 0.35 ETH | ||||
7463280 | 1964 days ago | 1 ETH | ||||
7463275 | 1964 days ago | 1 ETH | ||||
7463273 | 1964 days ago | 1 ETH | ||||
7463181 | 1964 days ago | 0.1 ETH |
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Contract Name:
NFTMinter
Compiler Version
v0.4.24+commit.e67f0147
Optimization Enabled:
No with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2018-06-07 */ pragma solidity ^0.4.23; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ function Ownable() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } /** * @title ERC721 Non-Fungible Token Standard basic interface * @dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721Basic { event Transfer(address indexed _from, address indexed _to, uint256 _tokenId); event Approval(address indexed _owner, address indexed _approved, uint256 _tokenId); event ApprovalForAll(address indexed _owner, address indexed _operator, bool _approved); function balanceOf(address _owner) public view returns (uint256 _balance); function ownerOf(uint256 _tokenId) public view returns (address _owner); function exists(uint256 _tokenId) public view returns (bool _exists); function approve(address _to, uint256 _tokenId) public; function getApproved(uint256 _tokenId) public view returns (address _operator); function setApprovalForAll(address _operator, bool _approved) public; function isApprovedForAll(address _owner, address _operator) public view returns (bool); function transferFrom(address _from, address _to, uint256 _tokenId) public; function safeTransferFrom(address _from, address _to, uint256 _tokenId) public; function safeTransferFrom( address _from, address _to, uint256 _tokenId, bytes _data ) public; } /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721Enumerable is ERC721Basic { function totalSupply() public view returns (uint256); function tokenOfOwnerByIndex(address _owner, uint256 _index) public view returns (uint256 _tokenId); function tokenByIndex(uint256 _index) public view returns (uint256); } /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721Metadata is ERC721Basic { function name() public view returns (string _name); function symbol() public view returns (string _symbol); function tokenURI(uint256 _tokenId) public view returns (string); } /** * @title ERC-721 Non-Fungible Token Standard, full implementation interface * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721 is ERC721Basic, ERC721Enumerable, ERC721Metadata { } pragma solidity ^0.4.21; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ contract ERC721Receiver { /** * @dev Magic value to be returned upon successful reception of an NFT * Equals to `bytes4(keccak256("onERC721Received(address,uint256,bytes)"))`, * which can be also obtained as `ERC721Receiver(0).onERC721Received.selector` */ bytes4 constant ERC721_RECEIVED = 0xf0b9e5ba; /** * @notice Handle the receipt of an NFT * @dev The ERC721 smart contract calls this function on the recipient * after a `safetransfer`. This function MAY throw to revert and reject the * transfer. This function MUST use 50,000 gas or less. Return of other * than the magic value MUST result in the transaction being reverted. * Note: the contract address is always the message sender. * @param _from The sending address * @param _tokenId The NFT identifier which is being transfered * @param _data Additional data with no specified format * @return `bytes4(keccak256("onERC721Received(address,uint256,bytes)"))` */ function onERC721Received(address _from, uint256 _tokenId, bytes _data) public returns(bytes4); } pragma solidity ^0.4.21; /** * Utility library of inline functions on addresses */ library AddressUtils { /** * Returns whether the target address is a contract * @dev This function will return false if invoked during the constructor of a contract, * as the code is not actually created until after the constructor finishes. * @param addr address to check * @return whether the target address is a contract */ function isContract(address addr) internal view returns (bool) { uint256 size; // XXX Currently there is no better way to check if there is a contract in an address // than to check the size of the code at that address. // See https://ethereum.stackexchange.com/a/14016/36603 // for more details about how this works. // TODO Check this again before the Serenity release, because all addresses will be // contracts then. assembly { size := extcodesize(addr) } // solium-disable-line security/no-inline-assembly return size > 0; } } /** * @title ERC721 Non-Fungible Token Standard basic implementation * @dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721BasicToken is ERC721Basic { using SafeMath for uint256; using AddressUtils for address; // Equals to `bytes4(keccak256("onERC721Received(address,uint256,bytes)"))` // which can be also obtained as `ERC721Receiver(0).onERC721Received.selector` bytes4 constant ERC721_RECEIVED = 0xf0b9e5ba; // Mapping from token ID to owner mapping (uint256 => address) internal tokenOwner; // Mapping from token ID to approved address mapping (uint256 => address) internal tokenApprovals; // Mapping from owner to number of owned token mapping (address => uint256) internal ownedTokensCount; // Mapping from owner to operator approvals mapping (address => mapping (address => bool)) internal operatorApprovals; /** * @dev Guarantees msg.sender is owner of the given token * @param _tokenId uint256 ID of the token to validate its ownership belongs to msg.sender */ modifier onlyOwnerOf(uint256 _tokenId) { require(ownerOf(_tokenId) == msg.sender); _; } /** * @dev Checks msg.sender can transfer a token, by being owner, approved, or operator * @param _tokenId uint256 ID of the token to validate */ modifier canTransfer(uint256 _tokenId) { require(isApprovedOrOwner(msg.sender, _tokenId)); _; } /** * @dev Gets the balance of the specified address * @param _owner address to query the balance of * @return uint256 representing the amount owned by the passed address */ function balanceOf(address _owner) public view returns (uint256) { require(_owner != address(0)); return ownedTokensCount[_owner]; } /** * @dev Gets the owner of the specified token ID * @param _tokenId uint256 ID of the token to query the owner of * @return owner address currently marked as the owner of the given token ID */ function ownerOf(uint256 _tokenId) public view returns (address) { address owner = tokenOwner[_tokenId]; require(owner != address(0)); return owner; } /** * @dev Returns whether the specified token exists * @param _tokenId uint256 ID of the token to query the existance of * @return whether the token exists */ function exists(uint256 _tokenId) public view returns (bool) { address owner = tokenOwner[_tokenId]; return owner != address(0); } /** * @dev Approves another address to transfer the given token ID * @dev The zero address indicates there is no approved address. * @dev There can only be one approved address per token at a given time. * @dev Can only be called by the token owner or an approved operator. * @param _to address to be approved for the given token ID * @param _tokenId uint256 ID of the token to be approved */ function approve(address _to, uint256 _tokenId) public { address owner = ownerOf(_tokenId); require(_to != owner); require(msg.sender == owner || isApprovedForAll(owner, msg.sender)); if (getApproved(_tokenId) != address(0) || _to != address(0)) { tokenApprovals[_tokenId] = _to; emit Approval(owner, _to, _tokenId); } } /** * @dev Gets the approved address for a token ID, or zero if no address set * @param _tokenId uint256 ID of the token to query the approval of * @return address currently approved for a the given token ID */ function getApproved(uint256 _tokenId) public view returns (address) { return tokenApprovals[_tokenId]; } /** * @dev Sets or unsets the approval of a given operator * @dev An operator is allowed to transfer all tokens of the sender on their behalf * @param _to operator address to set the approval * @param _approved representing the status of the approval to be set */ function setApprovalForAll(address _to, bool _approved) public { require(_to != msg.sender); operatorApprovals[msg.sender][_to] = _approved; emit ApprovalForAll(msg.sender, _to, _approved); } /** * @dev Tells whether an operator is approved by a given owner * @param _owner owner address which you want to query the approval of * @param _operator operator address which you want to query the approval of * @return bool whether the given operator is approved by the given owner */ function isApprovedForAll(address _owner, address _operator) public view returns (bool) { return operatorApprovals[_owner][_operator]; } /** * @dev Transfers the ownership of a given token ID to another address * @dev Usage of this method is discouraged, use `safeTransferFrom` whenever possible * @dev Requires the msg sender to be the owner, approved, or operator * @param _from current owner of the token * @param _to address to receive the ownership of the given token ID * @param _tokenId uint256 ID of the token to be transferred */ function transferFrom(address _from, address _to, uint256 _tokenId) public canTransfer(_tokenId) { require(_from != address(0)); require(_to != address(0)); clearApproval(_from, _tokenId); removeTokenFrom(_from, _tokenId); addTokenTo(_to, _tokenId); emit Transfer(_from, _to, _tokenId); } /** * @dev Safely transfers the ownership of a given token ID to another address * @dev If the target address is a contract, it must implement `onERC721Received`, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * @dev Requires the msg sender to be the owner, approved, or operator * @param _from current owner of the token * @param _to address to receive the ownership of the given token ID * @param _tokenId uint256 ID of the token to be transferred */ function safeTransferFrom( address _from, address _to, uint256 _tokenId ) public canTransfer(_tokenId) { // solium-disable-next-line arg-overflow safeTransferFrom(_from, _to, _tokenId, ""); } /** * @dev Safely transfers the ownership of a given token ID to another address * @dev If the target address is a contract, it must implement `onERC721Received`, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * @dev Requires the msg sender to be the owner, approved, or operator * @param _from current owner of the token * @param _to address to receive the ownership of the given token ID * @param _tokenId uint256 ID of the token to be transferred * @param _data bytes data to send along with a safe transfer check */ function safeTransferFrom( address _from, address _to, uint256 _tokenId, bytes _data ) public canTransfer(_tokenId) { transferFrom(_from, _to, _tokenId); // solium-disable-next-line arg-overflow require(checkAndCallSafeTransfer(_from, _to, _tokenId, _data)); } /** * @dev Returns whether the given spender can transfer a given token ID * @param _spender address of the spender to query * @param _tokenId uint256 ID of the token to be transferred * @return bool whether the msg.sender is approved for the given token ID, * is an operator of the owner, or is the owner of the token */ function isApprovedOrOwner(address _spender, uint256 _tokenId) internal view returns (bool) { address owner = ownerOf(_tokenId); return _spender == owner || getApproved(_tokenId) == _spender || isApprovedForAll(owner, _spender); } /** * @dev Internal function to mint a new token * @dev Reverts if the given token ID already exists * @param _to The address that will own the minted token * @param _tokenId uint256 ID of the token to be minted by the msg.sender */ function _mint(address _to, uint256 _tokenId) internal { require(_to != address(0)); addTokenTo(_to, _tokenId); emit Transfer(address(0), _to, _tokenId); } /** * @dev Internal function to burn a specific token * @dev Reverts if the token does not exist * @param _tokenId uint256 ID of the token being burned by the msg.sender */ function _burn(address _owner, uint256 _tokenId) internal { clearApproval(_owner, _tokenId); removeTokenFrom(_owner, _tokenId); emit Transfer(_owner, address(0), _tokenId); } /** * @dev Internal function to clear current approval of a given token ID * @dev Reverts if the given address is not indeed the owner of the token * @param _owner owner of the token * @param _tokenId uint256 ID of the token to be transferred */ function clearApproval(address _owner, uint256 _tokenId) internal { require(ownerOf(_tokenId) == _owner); if (tokenApprovals[_tokenId] != address(0)) { tokenApprovals[_tokenId] = address(0); emit Approval(_owner, address(0), _tokenId); } } /** * @dev Internal function to add a token ID to the list of a given address * @param _to address representing the new owner of the given token ID * @param _tokenId uint256 ID of the token to be added to the tokens list of the given address */ function addTokenTo(address _to, uint256 _tokenId) internal { require(tokenOwner[_tokenId] == address(0)); tokenOwner[_tokenId] = _to; ownedTokensCount[_to] = ownedTokensCount[_to].add(1); } /** * @dev Internal function to remove a token ID from the list of a given address * @param _from address representing the previous owner of the given token ID * @param _tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function removeTokenFrom(address _from, uint256 _tokenId) internal { require(ownerOf(_tokenId) == _from); ownedTokensCount[_from] = ownedTokensCount[_from].sub(1); tokenOwner[_tokenId] = address(0); } /** * @dev Internal function to invoke `onERC721Received` on a target address * @dev The call is not executed if the target address is not a contract * @param _from address representing the previous owner of the given token ID * @param _to target address that will receive the tokens * @param _tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return whether the call correctly returned the expected magic value */ function checkAndCallSafeTransfer( address _from, address _to, uint256 _tokenId, bytes _data ) internal returns (bool) { if (!_to.isContract()) { return true; } bytes4 retval = ERC721Receiver(_to).onERC721Received(_from, _tokenId, _data); return (retval == ERC721_RECEIVED); } } /** * @title Full ERC721 Token * This implementation includes all the required and some optional functionality of the ERC721 standard * Moreover, it includes approve all functionality using operator terminology * @dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721Token is ERC721, ERC721BasicToken { // Token name string internal name_; // Token symbol string internal symbol_; // Mapping from owner to list of owned token IDs mapping (address => uint256[]) internal ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) internal ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] internal allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) internal allTokensIndex; // Optional mapping for token URIs mapping(uint256 => string) internal tokenURIs; /** * @dev Constructor function */ function ERC721Token(string _name, string _symbol) public { name_ = _name; symbol_ = _symbol; } /** * @dev Gets the token name * @return string representing the token name */ function name() public view returns (string) { return name_; } /** * @dev Gets the token symbol * @return string representing the token symbol */ function symbol() public view returns (string) { return symbol_; } /** * @dev Returns an URI for a given token ID * @dev Throws if the token ID does not exist. May return an empty string. * @param _tokenId uint256 ID of the token to query */ function tokenURI(uint256 _tokenId) public view returns (string) { require(exists(_tokenId)); return tokenURIs[_tokenId]; } /** * @dev Gets the token ID at a given index of the tokens list of the requested owner * @param _owner address owning the tokens list to be accessed * @param _index uint256 representing the index to be accessed of the requested tokens list * @return uint256 token ID at the given index of the tokens list owned by the requested address */ function tokenOfOwnerByIndex(address _owner, uint256 _index) public view returns (uint256) { require(_index < balanceOf(_owner)); return ownedTokens[_owner][_index]; } /** * @dev Gets the total amount of tokens stored by the contract * @return uint256 representing the total amount of tokens */ function totalSupply() public view returns (uint256) { return allTokens.length; } /** * @dev Gets the token ID at a given index of all the tokens in this contract * @dev Reverts if the index is greater or equal to the total number of tokens * @param _index uint256 representing the index to be accessed of the tokens list * @return uint256 token ID at the given index of the tokens list */ function tokenByIndex(uint256 _index) public view returns (uint256) { require(_index < totalSupply()); return allTokens[_index]; } /** * @dev Internal function to set the token URI for a given token * @dev Reverts if the token ID does not exist * @param _tokenId uint256 ID of the token to set its URI * @param _uri string URI to assign */ function _setTokenURI(uint256 _tokenId, string _uri) internal { require(exists(_tokenId)); tokenURIs[_tokenId] = _uri; } /** * @dev Internal function to add a token ID to the list of a given address * @param _to address representing the new owner of the given token ID * @param _tokenId uint256 ID of the token to be added to the tokens list of the given address */ function addTokenTo(address _to, uint256 _tokenId) internal { super.addTokenTo(_to, _tokenId); uint256 length = ownedTokens[_to].length; ownedTokens[_to].push(_tokenId); ownedTokensIndex[_tokenId] = length; } /** * @dev Internal function to remove a token ID from the list of a given address * @param _from address representing the previous owner of the given token ID * @param _tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function removeTokenFrom(address _from, uint256 _tokenId) internal { super.removeTokenFrom(_from, _tokenId); uint256 tokenIndex = ownedTokensIndex[_tokenId]; uint256 lastTokenIndex = ownedTokens[_from].length.sub(1); uint256 lastToken = ownedTokens[_from][lastTokenIndex]; ownedTokens[_from][tokenIndex] = lastToken; ownedTokens[_from][lastTokenIndex] = 0; // Note that this will handle single-element arrays. In that case, both tokenIndex and lastTokenIndex are going to // be zero. Then we can make sure that we will remove _tokenId from the ownedTokens list since we are first swapping // the lastToken to the first position, and then dropping the element placed in the last position of the list ownedTokens[_from].length--; ownedTokensIndex[_tokenId] = 0; ownedTokensIndex[lastToken] = tokenIndex; } /** * @dev Internal function to mint a new token * @dev Reverts if the given token ID already exists * @param _to address the beneficiary that will own the minted token * @param _tokenId uint256 ID of the token to be minted by the msg.sender */ function _mint(address _to, uint256 _tokenId) internal { super._mint(_to, _tokenId); allTokensIndex[_tokenId] = allTokens.length; allTokens.push(_tokenId); } /** * @dev Internal function to burn a specific token * @dev Reverts if the token does not exist * @param _owner owner of the token to burn * @param _tokenId uint256 ID of the token being burned by the msg.sender */ function _burn(address _owner, uint256 _tokenId) internal { super._burn(_owner, _tokenId); // Clear metadata (if any) if (bytes(tokenURIs[_tokenId]).length != 0) { delete tokenURIs[_tokenId]; } // Reorg all tokens array uint256 tokenIndex = allTokensIndex[_tokenId]; uint256 lastTokenIndex = allTokens.length.sub(1); uint256 lastToken = allTokens[lastTokenIndex]; allTokens[tokenIndex] = lastToken; allTokens[lastTokenIndex] = 0; allTokens.length--; allTokensIndex[_tokenId] = 0; allTokensIndex[lastToken] = tokenIndex; } } /** * @title Pausable * @dev Base contract which allows children to implement an emergency stop mechanism. */ contract Pausable is Ownable { event Pause(); event Unpause(); bool public paused = false; /** * @dev Modifier to make a function callable only when the contract is not paused. */ modifier whenNotPaused() { require(!paused); _; } /** * @dev Modifier to make a function callable only when the contract is paused. */ modifier whenPaused() { require(paused); _; } /** * @dev called by the owner to pause, triggers stopped state */ function pause() onlyOwner whenNotPaused public { paused = true; emit Pause(); } /** * @dev called by the owner to unpause, returns to normal state */ function unpause() onlyOwner whenPaused public { paused = false; emit Unpause(); } } /** * @title Contracts that should not own Ether * @author Remco Bloemen <remco@2π.com> * @dev This tries to block incoming ether to prevent accidental loss of Ether. Should Ether end up * in the contract, it will allow the owner to reclaim this ether. * @notice Ether can still be sent to this contract by: * calling functions labeled `payable` * `selfdestruct(contract_address)` * mining directly to the contract address */ contract HasNoEther is Ownable { /** * @dev Constructor that rejects incoming Ether * @dev The `payable` flag is added so we can access `msg.value` without compiler warning. If we * leave out payable, then Solidity will allow inheriting contracts to implement a payable * constructor. By doing it this way we prevent a payable constructor from working. Alternatively * we could use assembly to access msg.value. */ function HasNoEther() public payable { require(msg.value == 0); } /** * @dev Disallows direct send by settings a default function without the `payable` flag. */ function() external { } /** * @dev Transfer all Ether held by the contract to the owner. */ function reclaimEther() external onlyOwner { // solium-disable-next-line security/no-send assert(owner.send(address(this).balance)); } } /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure. * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { function safeTransfer(ERC20Basic token, address to, uint256 value) internal { assert(token.transfer(to, value)); } function safeTransferFrom( ERC20 token, address from, address to, uint256 value ) internal { assert(token.transferFrom(from, to, value)); } function safeApprove(ERC20 token, address spender, uint256 value) internal { assert(token.approve(spender, value)); } } /** * @title Contracts that should be able to recover tokens * @author SylTi * @dev This allow a contract to recover any ERC20 token received in a contract by transferring the balance to the contract owner. * This will prevent any accidental loss of tokens. */ contract CanReclaimToken is Ownable { using SafeERC20 for ERC20Basic; /** * @dev Reclaim all ERC20Basic compatible tokens * @param token ERC20Basic The address of the token contract */ function reclaimToken(ERC20Basic token) external onlyOwner { uint256 balance = token.balanceOf(this); token.safeTransfer(owner, balance); } } /** * @title Contracts that should not own Tokens * @author Remco Bloemen <remco@2π.com> * @dev This blocks incoming ERC223 tokens to prevent accidental loss of tokens. * Should tokens (any ERC20Basic compatible) end up in the contract, it allows the * owner to reclaim the tokens. */ contract HasNoTokens is CanReclaimToken { /** * @dev Reject all ERC223 compatible tokens * @param from_ address The address that is transferring the tokens * @param value_ uint256 the amount of the specified token * @param data_ Bytes The data passed from the caller. */ function tokenFallback(address from_, uint256 value_, bytes data_) external { from_; value_; data_; revert(); } } /** * @title Contracts that should not own Contracts * @author Remco Bloemen <remco@2π.com> * @dev Should contracts (anything Ownable) end up being owned by this contract, it allows the owner * of this contract to reclaim ownership of the contracts. */ contract HasNoContracts is Ownable { /** * @dev Reclaim ownership of Ownable contracts * @param contractAddr The address of the Ownable to be reclaimed. */ function reclaimContract(address contractAddr) external onlyOwner { Ownable contractInst = Ownable(contractAddr); contractInst.transferOwnership(owner); } } /** * @title Base contract for contracts that should not own things. * @author Remco Bloemen <remco@2π.com> * @dev Solves a class of errors where a contract accidentally becomes owner of Ether, Tokens or * Owned contracts. See respective base contracts for details. */ contract NoOwner is HasNoEther, HasNoTokens, HasNoContracts { } contract MintingUtility is Pausable, NoOwner { mapping (address => bool) public _authorizedMinters; modifier onlyMinter() { bool isAuthorized = _authorizedMinters[msg.sender]; require(isAuthorized || msg.sender == owner); _; } function setAuthorizedMinter(address _minter, bool _isAuthorized) external onlyOwner { _authorizedMinters[_minter] = _isAuthorized; } } contract MintableNFT is ERC721Token, MintingUtility { using SafeMath for uint256; uint8 public bitsMask; uint248 public maxMask; mapping (uint256 => uint256) public tokenTypeQuantity; mapping (uint256 => uint256) public tokenTypeAvailableQuantity; constructor(string _name, string _symbol, uint8 _bytesMask) ERC721Token(_name, _symbol) public { require(_bytesMask > 0); // The mask has to be bigger than zero require(_bytesMask < 32); // The mask can not occupy the entire length, because we need at least one byte to reflect the token type bitsMask = _bytesMask * 8; // Mask is set at creation and can't be modified (max 248 bits, fits on uint8(256)) uint256 maximumValueOfMask = uint256(2) ** (uint256(bitsMask)) - 1; // Gets the maximum uint value for the mask; maxMask = uint248(maximumValueOfMask); } /* * @notice Makes the contract type verifiable. * @dev Function to prove the contract is MintableNFT. */ function isMintableNFT() external pure returns (bool) { return true; } /* @dev Establishes ownership and brings token into existence AKA minting a token @param _beneficiary - who gets the the tokens @param _tokenIds - tokens. */ function mint(address _beneficiary, uint256 _tokenType) public onlyMinter whenNotPaused { require(tokenTypeAvailableQuantity[_tokenType] > 0); bytes32 tokenIdMasked = bytes32(_tokenType) << bitsMask; tokenTypeAvailableQuantity[_tokenType] = tokenTypeAvailableQuantity[_tokenType].sub(1); bytes32 quantityId = bytes32(tokenTypeQuantity[_tokenType].sub(tokenTypeAvailableQuantity[_tokenType])); uint256 tokenId = uint256(tokenIdMasked | quantityId); // This will assign ownership, and also emit the Transfer event _mint(_beneficiary, tokenId); } function setTokensQuantity(uint256[] _tokenTypes, uint248[] _quantities) public onlyOwner { require(_tokenTypes.length > 0 && _tokenTypes.length == _quantities.length); bytes32 normalizedToken; for (uint i = 0; i < _tokenTypes.length; i++) { normalizedToken = bytes32(_tokenTypes[i]); // Clears non relevant bytes normalizedToken = normalizedToken << bitsMask; // Clears non relevant bytes normalizedToken = normalizedToken >> bitsMask; // Clears non relevant bytes require(uint256(normalizedToken) == _tokenTypes[i]); // Avoids overflow mistakes when setting the tokens quantities require(tokenTypeQuantity[_tokenTypes[i]] == 0); // Ensures quantity is not set require(_quantities[i] > 0 && _quantities[i] <= maxMask); // Ensures no overflow by using maxMask as quantity. tokenTypeQuantity[_tokenTypes[i]] = _quantities[i]; tokenTypeAvailableQuantity[_tokenTypes[i]] = _quantities[i]; } } function getOwnedTokensIds(address _owner) external view returns (uint[] tokensIds) { tokensIds = new uint[](balanceOf(_owner)); for (uint i = 0; i < balanceOf(_owner); i++) { tokensIds[i] = tokenOfOwnerByIndex(_owner, i); } return tokensIds; } } contract NFTMinter is MintingUtility { using SafeMath for uint256; event TokenPurchase(address indexed purchaser, uint256 price, uint256 tokenType); address public wallet; uint256 public weiRaised; MintableNFT public nftContract; uint256[] public enabledTokens; mapping (uint256 => uint256) public enabledTokenIndex; mapping (uint256 => uint256) public tokenTypePrices; constructor(address _wallet, MintableNFT _nftContract) public { require(_wallet != address(0)); require(_nftContract.isMintableNFT()); wallet = _wallet; nftContract = _nftContract; } function setTokenPrices(uint256[] _tokenTypes, uint256[] _prices) public onlyOwner { require(_tokenTypes.length > 0 && _tokenTypes.length == _prices.length); for (uint i = 0; i < _tokenTypes.length; i++) { require(nftContract.tokenTypeQuantity(_tokenTypes[i]) > 0); tokenTypePrices[_tokenTypes[i]] = _prices[i]; require(enabledTokens.length == 0 || enabledTokens[enabledTokenIndex[_tokenTypes[i]]] != _tokenTypes[i]); enabledTokenIndex[_tokenTypes[i]] = enabledTokens.push(_tokenTypes[i]) - 1; } } function disableTokens(uint256[] _tokenTypes) public onlyOwner { require(_tokenTypes.length > 0); for (uint i = 0; i < _tokenTypes.length; i++) { require(tokenEnabled(_tokenTypes[i])); uint256 lastToken = enabledTokens[enabledTokens.length.sub(1)]; enabledTokens[enabledTokenIndex[_tokenTypes[i]]] = lastToken; enabledTokenIndex[lastToken] = enabledTokenIndex[_tokenTypes[i]]; enabledTokens.length = enabledTokens.length.sub(1); delete enabledTokenIndex[_tokenTypes[i]]; } } function buyTokens(uint256 _tokenType) public payable { require(msg.sender != address(0)); require(tokenEnabled(_tokenType)); require(validPurchase(_tokenType)); uint256 weiAmount = msg.value; weiRaised = weiRaised.add(weiAmount); emit TokenPurchase(msg.sender, weiAmount, _tokenType); forwardFunds(); nftContract.mint(msg.sender, _tokenType); } function forwardFunds() internal { wallet.transfer(msg.value); } function validPurchase(uint256 _tokenType) internal view returns (bool) { bool availableTokens = nftContract.tokenTypeAvailableQuantity(_tokenType) >= 1; bool correctPayment = msg.value == tokenTypePrices[_tokenType]; return availableTokens && correctPayment; } function tokenEnabled(uint256 _tokenType) public view returns (bool) { return enabledTokens.length > enabledTokenIndex[_tokenType] && enabledTokens[enabledTokenIndex[_tokenType]] == _tokenType; } function getEnabledTokensLength() external view returns (uint length) { return enabledTokens.length; } function getEnabledTokensInformation() external view returns (uint256[] tokenTypesIds, uint256[] tokenTypesPrices, uint256[] tokenTypesQuantities, uint256[] tokenTypesAvailableQuantities) { tokenTypesIds = new uint[](enabledTokens.length); tokenTypesPrices = new uint[](enabledTokens.length); tokenTypesQuantities = new uint[](enabledTokens.length); tokenTypesAvailableQuantities = new uint[](enabledTokens.length); for (uint i = 0; i < enabledTokens.length; i++) { tokenTypesIds[i] = (enabledTokens[i]); tokenTypesPrices[i] = (tokenTypePrices[enabledTokens[i]]); tokenTypesQuantities[i] = (nftContract.tokenTypeQuantity(enabledTokens[i])); tokenTypesAvailableQuantities[i] = (nftContract.tokenTypeAvailableQuantity(enabledTokens[i])); } } }
Contract Security Audit
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Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000037e9be1daab8c53985b3e6f474cab4ad233c7b2a000000000000000000000000d6076efe1e577deec21afab6ed383b47e9d8dec6
-----Decoded View---------------
Arg [0] : _wallet (address): 0x37e9bE1dAab8C53985b3E6F474cAb4ad233C7b2a
Arg [1] : _nftContract (address): 0xd6076EFe1E577Deec21afab6eD383b47E9D8DEc6
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000037e9be1daab8c53985b3e6f474cab4ad233c7b2a
Arg [1] : 000000000000000000000000d6076efe1e577deec21afab6ed383b47e9d8dec6
Swarm Source
bzzr://8859ef5920a23d78b196672b000faeeb0cab4ac5e8380e2e069150ee61425df0
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Multichain Portfolio | 26 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.