ETH Price: $3,886.29 (-0.68%)

Token

Decentraland LAND (LAND)
 

Overview

Max Total Supply

92,598 LAND

Holders

6,316 (0.00%)

Market

Volume (24H)

1.6618 ETH

Min Price (24H)

$233.18 @ 0.060000 ETH

Max Price (24H)

$427.49 @ 0.110000 ETH
Balance
1 LAND
0x0533a6bf5be7032acbf1f2528b94d1ad88cfd59a
Loading...
Loading
Loading...
Loading
Loading...
Loading

OVERVIEW

Decentraland is a virtual reality platform powered by the Ethereum blockchain.

# Exchange Pair Price  24H Volume % Volume

Contract Source Code Verified (Exact Match)

Contract Name:
LANDProxy

Compiler Version
v0.4.18+commit.9cf6e910

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion
/**
 *Submitted for verification at Etherscan.io on 2018-01-21
*/

pragma solidity ^0.4.18;

// File: contracts/land/LANDStorage.sol

contract LANDStorage {

  mapping (address => uint) latestPing;

  uint256 constant clearLow = 0xffffffffffffffffffffffffffffffff00000000000000000000000000000000;
  uint256 constant clearHigh = 0x00000000000000000000000000000000ffffffffffffffffffffffffffffffff;
  uint256 constant factor = 0x100000000000000000000000000000000;

  mapping (address => bool) authorizedDeploy;

}

// File: contracts/upgradable/OwnableStorage.sol

contract OwnableStorage {

  address public owner;

  function OwnableStorage() internal {
    owner = msg.sender;
  }

}

// File: contracts/upgradable/ProxyStorage.sol

contract ProxyStorage {

  /**
   * Current contract to which we are proxing
   */
  address public currentContract;
  address public proxyOwner;
}

// File: erc821/contracts/AssetRegistryStorage.sol

contract AssetRegistryStorage {

  string internal _name;
  string internal _symbol;
  string internal _description;

  /**
   * Stores the total count of assets managed by this registry
   */
  uint256 internal _count;

  /**
   * Stores an array of assets owned by a given account
   */
  mapping(address => uint256[]) internal _assetsOf;

  /**
   * Stores the current holder of an asset
   */
  mapping(uint256 => address) internal _holderOf;

  /**
   * Stores the index of an asset in the `_assetsOf` array of its holder
   */
  mapping(uint256 => uint256) internal _indexOfAsset;

  /**
   * Stores the data associated with an asset
   */
  mapping(uint256 => string) internal _assetData;

  /**
   * For a given account, for a given opperator, store whether that operator is
   * allowed to transfer and modify assets on behalf of them.
   */
  mapping(address => mapping(address => bool)) internal _operators;

  /**
   * Simple reentrancy lock
   */
  bool internal _reentrancy;
}

// File: contracts/Storage.sol

contract Storage is ProxyStorage, OwnableStorage, AssetRegistryStorage, LANDStorage {
}

// File: contracts/upgradable/DelegateProxy.sol

contract DelegateProxy {
  /**
   * @dev Performs a delegatecall and returns whatever the delegatecall returned (entire context execution will return!)
   * @param _dst Destination address to perform the delegatecall
   * @param _calldata Calldata for the delegatecall
   */
  function delegatedFwd(address _dst, bytes _calldata) internal {
    require(isContract(_dst));
    assembly {
      let result := delegatecall(sub(gas, 10000), _dst, add(_calldata, 0x20), mload(_calldata), 0, 0)
      let size := returndatasize

      let ptr := mload(0x40)
      returndatacopy(ptr, 0, size)

      // revert instead of invalid() bc if the underlying call failed with invalid() it already wasted gas.
      // if the call returned error data, forward it
      switch result case 0 { revert(ptr, size) }
      default { return(ptr, size) }
    }
  }

  function isContract(address _target) constant internal returns (bool) {
    uint256 size;
    assembly { size := extcodesize(_target) }
    return size > 0;
  }
}

// File: contracts/upgradable/IApplication.sol

contract IApplication {
  function initialize(bytes data) public;
}

// File: contracts/upgradable/Ownable.sol

contract Ownable is Storage {

  event OwnerUpdate(address _prevOwner, address _newOwner);

  function bytesToAddress (bytes b) pure public returns (address) {
    uint result = 0;
    for (uint i = b.length-1; i+1 > 0; i--) {
      uint c = uint(b[i]);
      uint to_inc = c * ( 16 ** ((b.length - i-1) * 2));
      result += to_inc;
    }
    return address(result);
  }

  modifier onlyOwner {
    assert(msg.sender == owner);
    _;
  }

  function initialize(bytes data) public {
    owner = bytesToAddress(data);
  }

  function transferOwnership(address _newOwner) public onlyOwner {
    require(_newOwner != owner);
    owner = _newOwner;
  }
}

// File: contracts/upgradable/Proxy.sol

contract Proxy is Storage, DelegateProxy {

  event Upgrade(address indexed newContract, bytes initializedWith);
  event OwnerUpdate(address _prevOwner, address _newOwner);

  function Proxy() public {
    proxyOwner = msg.sender;
  }

  modifier onlyProxyOwner() {
    require(msg.sender == proxyOwner);
    _;
  }

  function transferOwnership(address _newOwner) public onlyProxyOwner {
    require(_newOwner != proxyOwner);

    OwnerUpdate(proxyOwner, _newOwner);
    proxyOwner = _newOwner;
  }

  function upgrade(IApplication newContract, bytes data) public onlyProxyOwner {
    currentContract = newContract;
    IApplication(this).initialize(data);

    Upgrade(newContract, data);
  }

  function () payable public {
    require(currentContract != 0); // if app code hasn't been set yet, don't call
    delegatedFwd(currentContract, msg.data);
  }
}

// File: contracts/upgradable/LANDProxy.sol

contract LANDProxy is Storage, Proxy {
}

Contract Security Audit

Contract ABI

[{"constant":true,"inputs":[],"name":"proxyOwner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"currentContract","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newContract","type":"address"},{"name":"data","type":"bytes"}],"name":"upgrade","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"newContract","type":"address"},{"indexed":false,"name":"initializedWith","type":"bytes"}],"name":"Upgrade","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_prevOwner","type":"address"},{"indexed":false,"name":"_newOwner","type":"address"}],"name":"OwnerUpdate","type":"event"}]

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

Deployed Bytecode

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

Swarm Source

bzzr://9c5cf1525023f56b020c8e8faef83d3057389d0673a91d557b8dcd49d811dae9
Loading...
Loading
Loading...
Loading
[ Download: CSV Export  ]
[ Download: CSV Export  ]

A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.