Feature Tip: Add private address tag to any address under My Name Tag !
RankingBall Gold (RBG) swaps tokens with the Global Digital Content Token (GDC).
Overview
Max Total Supply
2,382,907,917.904377438823346598 RBG
Holders
1,909 (0.00%)
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
RankingBallGoldCustomToken
Compiler Version
v0.4.24+commit.e67f0147
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2018-06-08 */ pragma solidity ^0.4.24; contract Controlled { /// @notice The address of the controller is the only address that can call /// a function with this modifier modifier onlyController { require(msg.sender == controller); _; } address public controller; function Controlled() public { controller = msg.sender;} /// @notice Changes the controller of the contract /// @param _newController The new controller of the contract function changeController(address _newController) public onlyController { controller = _newController; } } /// @dev The token controller contract must implement these functions contract TokenController { /// @notice Called when `_owner` sends ether to the MiniMe Token contract /// @param _owner The address that sent the ether to create tokens /// @return True if the ether is accepted, false if it throws function proxyPayment(address _owner) public payable returns(bool); /// @notice Notifies the controller about a token transfer allowing the /// controller to react if desired /// @param _from The origin of the transfer /// @param _to The destination of the transfer /// @param _amount The amount of the transfer /// @return False if the controller does not authorize the transfer function onTransfer(address _from, address _to, uint _amount) public returns(bool); /// @notice Notifies the controller about an approval allowing the /// controller to react if desired /// @param _owner The address that calls `approve()` /// @param _spender The spender in the `approve()` call /// @param _amount The amount in the `approve()` call /// @return False if the controller does not authorize the approval function onApprove(address _owner, address _spender, uint _amount) public returns(bool); } /* Copyright 2016, Jordi Baylina This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /// @title MiniMeToken Contract /// @author Jordi Baylina /// @dev This token contract's goal is to make it easy for anyone to clone this /// token using the token distribution at a given block, this will allow DAO's /// and DApps to upgrade their features in a decentralized manner without /// affecting the original token /// @dev It is ERC20 compliant, but still needs to under go further testing. contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 _amount, address _token, bytes _data) public; } /// @dev The actual token contract, the default controller is the msg.sender /// that deploys the contract, so usually this token will be deployed by a /// token controller contract, which Giveth will call a "Campaign" contract MiniMeToken is Controlled { string public name; //The Token's name: e.g. DigixDAO Tokens uint8 public decimals; //Number of decimals of the smallest unit string public symbol; //An identifier: e.g. REP string public version = 'MMT_0.2'; //An arbitrary versioning scheme /// @dev `Checkpoint` is the structure that attaches a block number to a /// given value, the block number attached is the one that last changed the /// value struct Checkpoint { // `fromBlock` is the block number that the value was generated from uint128 fromBlock; // `value` is the amount of tokens at a specific block number uint128 value; } // `parentToken` is the Token address that was cloned to produce this token; // it will be 0x0 for a token that was not cloned MiniMeToken public parentToken; // `parentSnapShotBlock` is the block number from the Parent Token that was // used to determine the initial distribution of the Clone Token uint public parentSnapShotBlock; // `creationBlock` is the block number that the Clone Token was created uint public creationBlock; // `balances` is the map that tracks the balance of each address, in this // contract when the balance changes the block number that the change // occurred is also included in the map mapping (address => Checkpoint[]) balances; // `allowed` tracks any extra transfer rights as in all ERC20 tokens mapping (address => mapping (address => uint256)) allowed; // Tracks the history of the `totalSupply` of the token Checkpoint[] totalSupplyHistory; // Flag that determines if the token is transferable or not. bool public transfersEnabled; // The factory used to create new clone tokens MiniMeTokenFactory public tokenFactory; //////////////// // Constructor //////////////// /// @notice Constructor to create a MiniMeToken /// @param _tokenFactory The address of the MiniMeTokenFactory contract that /// will create the Clone token contracts, the token factory needs to be /// deployed first /// @param _parentToken Address of the parent token, set to 0x0 if it is a /// new token /// @param _parentSnapShotBlock Block of the parent token that will /// determine the initial distribution of the clone token, set to 0 if it /// is a new token /// @param _tokenName Name of the new token /// @param _decimalUnits Number of decimals of the new token /// @param _tokenSymbol Token Symbol for the new token /// @param _transfersEnabled If true, tokens will be able to be transferred function MiniMeToken( address _tokenFactory, address _parentToken, uint _parentSnapShotBlock, string _tokenName, uint8 _decimalUnits, string _tokenSymbol, bool _transfersEnabled ) public { tokenFactory = MiniMeTokenFactory(_tokenFactory); name = _tokenName; // Set the name decimals = _decimalUnits; // Set the decimals symbol = _tokenSymbol; // Set the symbol parentToken = MiniMeToken(_parentToken); parentSnapShotBlock = _parentSnapShotBlock; transfersEnabled = _transfersEnabled; creationBlock = block.number; } /////////////////// // ERC20 Methods /////////////////// /// @notice Send `_amount` tokens to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _amount The amount of tokens to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _amount) public returns (bool success) { require(transfersEnabled); return doTransfer(msg.sender, _to, _amount); } /// @notice Send `_amount` tokens to `_to` from `_from` on the condition it /// is approved by `_from` /// @param _from The address holding the tokens being transferred /// @param _to The address of the recipient /// @param _amount The amount of tokens to be transferred /// @return True if the transfer was successful function transferFrom(address _from, address _to, uint256 _amount ) public returns (bool success) { // The controller of this contract can move tokens around at will, // this is important to recognize! Confirm that you trust the // controller of this contract, which in most situations should be // another open source smart contract or 0x0 if (msg.sender != controller) { require(transfersEnabled); // The standard ERC 20 transferFrom functionality if (allowed[_from][msg.sender] < _amount) return false; allowed[_from][msg.sender] -= _amount; } return doTransfer(_from, _to, _amount); } /// @dev This is the actual transfer function in the token contract, it can /// only be called by other functions in this contract. /// @param _from The address holding the tokens being transferred /// @param _to The address of the recipient /// @param _amount The amount of tokens to be transferred /// @return True if the transfer was successful function doTransfer(address _from, address _to, uint _amount ) internal returns(bool) { if (_amount == 0) { return true; } require(parentSnapShotBlock < block.number); // Do not allow transfer to 0x0 or the token contract itself require((_to != 0) && (_to != address(this))); // If the amount being transfered is more than the balance of the // account the transfer returns false var previousBalanceFrom = balanceOfAt(_from, block.number); if (previousBalanceFrom < _amount) { return false; } // Alerts the token controller of the transfer if (isContract(controller)) { require(TokenController(controller).onTransfer(_from, _to, _amount)); } // First update the balance array with the new value for the address // sending the tokens updateValueAtNow(balances[_from], previousBalanceFrom - _amount); // Then update the balance array with the new value for the address // receiving the tokens var previousBalanceTo = balanceOfAt(_to, block.number); require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow updateValueAtNow(balances[_to], previousBalanceTo + _amount); // An event to make the transfer easy to find on the blockchain Transfer(_from, _to, _amount); return true; } /// @param _owner The address that's balance is being requested /// @return The balance of `_owner` at the current block function balanceOf(address _owner) public constant returns (uint256 balance) { return balanceOfAt(_owner, block.number); } /// @notice `msg.sender` approves `_spender` to spend `_amount` tokens on /// its behalf. This is a modified version of the ERC20 approve function /// to be a little bit safer /// @param _spender The address of the account able to transfer the tokens /// @param _amount The amount of tokens to be approved for transfer /// @return True if the approval was successful function approve(address _spender, uint256 _amount) public returns (bool success) { require(transfersEnabled); // To change the approve amount you first have to reduce the addresses` // allowance to zero by calling `approve(_spender,0)` if it is not // already 0 to mitigate the race condition described here: // https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 require((_amount == 0) || (allowed[msg.sender][_spender] == 0)); // Alerts the token controller of the approve function call if (isContract(controller)) { require(TokenController(controller).onApprove(msg.sender, _spender, _amount)); } allowed[msg.sender][_spender] = _amount; Approval(msg.sender, _spender, _amount); return true; } /// @dev This function makes it easy to read the `allowed[]` map /// @param _owner The address of the account that owns the token /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens of _owner that _spender is allowed /// to spend function allowance(address _owner, address _spender ) public constant returns (uint256 remaining) { return allowed[_owner][_spender]; } /// @notice `msg.sender` approves `_spender` to send `_amount` tokens on /// its behalf, and then a function is triggered in the contract that is /// being approved, `_spender`. This allows users to use their tokens to /// interact with contracts in one function call instead of two /// @param _spender The address of the contract able to transfer the tokens /// @param _amount The amount of tokens to be approved for transfer /// @return True if the function call was successful function approveAndCall(address _spender, uint256 _amount, bytes _extraData ) public returns (bool success) { require(approve(_spender, _amount)); ApproveAndCallFallBack(_spender).receiveApproval( msg.sender, _amount, this, _extraData ); return true; } /// @dev This function makes it easy to get the total number of tokens /// @return The total number of tokens function totalSupply() public constant returns (uint) { return totalSupplyAt(block.number); } //////////////// // Query balance and totalSupply in History //////////////// /// @dev Queries the balance of `_owner` at a specific `_blockNumber` /// @param _owner The address from which the balance will be retrieved /// @param _blockNumber The block number when the balance is queried /// @return The balance at `_blockNumber` function balanceOfAt(address _owner, uint _blockNumber) public constant returns (uint) { // These next few lines are used when the balance of the token is // requested before a check point was ever created for this token, it // requires that the `parentToken.balanceOfAt` be queried at the // genesis block for that token as this contains initial balance of // this token if ((balances[_owner].length == 0) || (balances[_owner][0].fromBlock > _blockNumber)) { if (address(parentToken) != 0) { return parentToken.balanceOfAt(_owner, min(_blockNumber, parentSnapShotBlock)); } else { // Has no parent return 0; } // This will return the expected balance during normal situations } else { return getValueAt(balances[_owner], _blockNumber); } } /// @notice Total amount of tokens at a specific `_blockNumber`. /// @param _blockNumber The block number when the totalSupply is queried /// @return The total amount of tokens at `_blockNumber` function totalSupplyAt(uint _blockNumber) public constant returns(uint) { // These next few lines are used when the totalSupply of the token is // requested before a check point was ever created for this token, it // requires that the `parentToken.totalSupplyAt` be queried at the // genesis block for this token as that contains totalSupply of this // token at this block number. if ((totalSupplyHistory.length == 0) || (totalSupplyHistory[0].fromBlock > _blockNumber)) { if (address(parentToken) != 0) { return parentToken.totalSupplyAt(min(_blockNumber, parentSnapShotBlock)); } else { return 0; } // This will return the expected totalSupply during normal situations } else { return getValueAt(totalSupplyHistory, _blockNumber); } } //////////////// // Clone Token Method //////////////// /// @notice Creates a new clone token with the initial distribution being /// this token at `_snapshotBlock` /// @param _cloneTokenName Name of the clone token /// @param _cloneDecimalUnits Number of decimals of the smallest unit /// @param _cloneTokenSymbol Symbol of the clone token /// @param _snapshotBlock Block when the distribution of the parent token is /// copied to set the initial distribution of the new clone token; /// if the block is zero than the actual block, the current block is used /// @param _transfersEnabled True if transfers are allowed in the clone /// @return The address of the new MiniMeToken Contract function createCloneToken( string _cloneTokenName, uint8 _cloneDecimalUnits, string _cloneTokenSymbol, uint _snapshotBlock, bool _transfersEnabled ) public returns(address) { if (_snapshotBlock == 0) _snapshotBlock = block.number; MiniMeToken cloneToken = tokenFactory.createCloneToken( this, _snapshotBlock, _cloneTokenName, _cloneDecimalUnits, _cloneTokenSymbol, _transfersEnabled ); cloneToken.changeController(msg.sender); // An event to make the token easy to find on the blockchain NewCloneToken(address(cloneToken), _snapshotBlock); return address(cloneToken); } //////////////// // Generate and destroy tokens //////////////// /// @notice Generates `_amount` tokens that are assigned to `_owner` /// @param _owner The address that will be assigned the new tokens /// @param _amount The quantity of tokens generated /// @return True if the tokens are generated correctly function generateTokens(address _owner, uint _amount ) public onlyController returns (bool) { uint curTotalSupply = totalSupply(); require(curTotalSupply + _amount >= curTotalSupply); // Check for overflow uint previousBalanceTo = balanceOf(_owner); require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow updateValueAtNow(totalSupplyHistory, curTotalSupply + _amount); updateValueAtNow(balances[_owner], previousBalanceTo + _amount); Transfer(0, _owner, _amount); return true; } /// @notice Burns `_amount` tokens from `_owner` /// @param _owner The address that will lose the tokens /// @param _amount The quantity of tokens to burn /// @return True if the tokens are burned correctly function destroyTokens(address _owner, uint _amount ) onlyController public returns (bool) { uint curTotalSupply = totalSupply(); require(curTotalSupply >= _amount); uint previousBalanceFrom = balanceOf(_owner); require(previousBalanceFrom >= _amount); updateValueAtNow(totalSupplyHistory, curTotalSupply - _amount); updateValueAtNow(balances[_owner], previousBalanceFrom - _amount); Transfer(_owner, 0, _amount); return true; } //////////////// // Enable tokens transfers //////////////// /// @notice Enables token holders to transfer their tokens freely if true /// @param _transfersEnabled True if transfers are allowed in the clone function enableTransfers(bool _transfersEnabled) public onlyController { transfersEnabled = _transfersEnabled; } //////////////// // Internal helper functions to query and set a value in a snapshot array //////////////// /// @dev `getValueAt` retrieves the number of tokens at a given block number /// @param checkpoints The history of values being queried /// @param _block The block number to retrieve the value at /// @return The number of tokens being queried function getValueAt(Checkpoint[] storage checkpoints, uint _block ) constant internal returns (uint) { if (checkpoints.length == 0) return 0; // Shortcut for the actual value if (_block >= checkpoints[checkpoints.length-1].fromBlock) return checkpoints[checkpoints.length-1].value; if (_block < checkpoints[0].fromBlock) return 0; // Binary search of the value in the array uint min = 0; uint max = checkpoints.length-1; while (max > min) { uint mid = (max + min + 1)/ 2; if (checkpoints[mid].fromBlock<=_block) { min = mid; } else { max = mid-1; } } return checkpoints[min].value; } /// @dev `updateValueAtNow` used to update the `balances` map and the /// `totalSupplyHistory` /// @param checkpoints The history of data being updated /// @param _value The new number of tokens function updateValueAtNow(Checkpoint[] storage checkpoints, uint _value ) internal { if ((checkpoints.length == 0) || (checkpoints[checkpoints.length -1].fromBlock < block.number)) { Checkpoint storage newCheckPoint = checkpoints[ checkpoints.length++ ]; newCheckPoint.fromBlock = uint128(block.number); newCheckPoint.value = uint128(_value); } else { Checkpoint storage oldCheckPoint = checkpoints[checkpoints.length-1]; oldCheckPoint.value = uint128(_value); } } /// @dev Internal function to determine if an address is a contract /// @param _addr The address being queried /// @return True if `_addr` is a contract function isContract(address _addr) constant internal returns(bool) { uint size; if (_addr == 0) return false; assembly { size := extcodesize(_addr) } return size>0; } /// @dev Helper function to return a min betwen the two uints function min(uint a, uint b) pure internal returns (uint) { return a < b ? a : b; } /// @notice The fallback function: If the contract's controller has not been /// set to 0, then the `proxyPayment` method is called which relays the /// ether and creates tokens as described in the token controller contract function () public payable { require(isContract(controller)); require(TokenController(controller).proxyPayment.value(msg.value)(msg.sender)); } ////////// // Safety Methods ////////// /// @notice This method can be used by the controller to extract mistakenly /// sent tokens to this contract. /// @param _token The address of the token contract that you want to recover /// set to 0 in case you want to extract ether. function claimTokens(address _token) public onlyController { if (_token == 0x0) { controller.transfer(this.balance); return; } MiniMeToken token = MiniMeToken(_token); uint balance = token.balanceOf(this); token.transfer(controller, balance); ClaimedTokens(_token, controller, balance); } //////////////// // Events //////////////// event ClaimedTokens(address indexed _token, address indexed _controller, uint _amount); event Transfer(address indexed _from, address indexed _to, uint256 _amount); event NewCloneToken(address indexed _cloneToken, uint _snapshotBlock); event Approval( address indexed _owner, address indexed _spender, uint256 _amount ); } //////////////// // MiniMeTokenFactory //////////////// /// @dev This contract is used to generate clone contracts from a contract. /// In solidity this is the way to create a contract from a contract of the /// same class contract MiniMeTokenFactory { /// @notice Update the DApp by creating a new token with new functionalities /// the msg.sender becomes the controller of this clone token /// @param _parentToken Address of the token being cloned /// @param _snapshotBlock Block of the parent token that will /// determine the initial distribution of the clone token /// @param _tokenName Name of the new token /// @param _decimalUnits Number of decimals of the new token /// @param _tokenSymbol Token Symbol for the new token /// @param _transfersEnabled If true, tokens will be able to be transferred /// @return The address of the new token contract function createCloneToken( address _parentToken, uint _snapshotBlock, string _tokenName, uint8 _decimalUnits, string _tokenSymbol, bool _transfersEnabled ) public returns (MiniMeToken) { MiniMeToken newToken = new MiniMeToken( this, _parentToken, _snapshotBlock, _tokenName, _decimalUnits, _tokenSymbol, _transfersEnabled ); newToken.changeController(msg.sender); return newToken; } } /** * @title Burnable MiniMe Token * @dev Token that can be irreversibly burned (destroyed). */ contract BurnableMiniMeToken is MiniMeToken { event Burn(address indexed burner, uint256 value); /** * @dev Burns a specific amount of tokens. * @param _amount The amount of token to be burned. */ function burn(uint256 _amount) public returns (bool) { uint curTotalSupply = totalSupply(); require(curTotalSupply >= _amount); uint previousBalanceFrom = balanceOf(msg.sender); require(previousBalanceFrom >= _amount); updateValueAtNow(totalSupplyHistory, curTotalSupply - _amount); updateValueAtNow(balances[msg.sender], previousBalanceFrom - _amount); Transfer(msg.sender, 0, _amount); return true; } } pragma solidity^0.4.18; contract RankingBallGoldToken is MiniMeToken, BurnableMiniMeToken { function RankingBallGoldToken(address _tokenFactory) MiniMeToken( _tokenFactory, 0x0, // no parent token 0, // no snapshot block number from parent "RankingBall Gold", // Token name 18, // Decimals "RBG", // Symbol true // Enable transfers ) {} } interface POSTokenI { /// @notice Query if a contract implements an interface /// @param interfaceID The interface identifier, as specified in ERC-165 /// @dev Interface identification is specified in ERC-165. This function /// uses less than 30,000 gas. /// @return `true` if the contract implements `interfaceID` and /// `interfaceID` is not 0xffffffff, `false` otherwise function supportsInterface(bytes4 interfaceID) public view returns (bool); /// @notice calls `Ownable.transferOwnership()` or `Controlled.changeController()` function transferOwnershipTo(address _to) public; } interface MintableTokenI { function mint(address _to, uint256 _amount) public returns (bool); } interface MiniMeTokenI { function generateTokens(address _to, uint256 _amount) public returns (bool); } /** * @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 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 POSController /// @dev POSController is a token controller that generate token interests. /// according to parameters(rate, coeff, interval blocks). /// It should be controller of `MiniMeToken` or owner of `MintableToken`. contract POSController is Ownable, TokenController { using SafeMath for uint256; struct Claim { uint128 fromBlock; uint128 claimedValue; } address public token; // POSController parameters uint256 public posInterval; uint256 public posRate; uint256 public posCoeff; uint256 public initBlockNumber; mapping (address => Claim[]) public claims; event Claimed(address indexed _owner, uint256 _amount); /* Constructor */ function POSController( address _token, uint256 _posInterval, uint256 _initBlockNumber, uint256 _posRate, uint256 _posCoeff ) public { require(_token != address(0)); require(_posInterval != 0); require(_posRate != 0); require(_posCoeff != 0); token = _token; posInterval = _posInterval; posRate = _posRate; posCoeff = _posCoeff; if (_initBlockNumber == 0) { initBlockNumber = block.number; } else { initBlockNumber = _initBlockNumber; } } /* External */ /* Public */ /// @notice claim interests generated by POSController function claimTokens(address _owner) public { doClaim(_owner, claims[_owner]); } /// @notice transfer token ownerhsip function claimTokenOwnership(address _to) public onlyOwner { POSTokenI(token).transferOwnershipTo(_to); } /// @notice proxyPayment implements MiniMeToken Controller's proxyPayment function proxyPayment(address _owner) public payable returns(bool) { revert(); // reject ether transfer to token contract return false; } /// @notice onTransfer implements MiniMeToken Controller's onTransfer function onTransfer(address _from, address _to, uint _amount) public returns(bool) { claimTokens(_from); claimTokens(_to); return true; } /// @notice onApprove implements MiniMeToken Controller's onApprove function onApprove(address _owner, address _spender, uint _amount) public returns(bool) { return true; } /* Internal */ function doClaim(address _owner, Claim[] storage c) internal { uint256 claimRate; if (c.length == 0 && claimable(block.number)) { claimRate = getClaimRate(0); } else if (c.length > 0 && claimable(c[c.length - 1].fromBlock)) { claimRate = getClaimRate(c[c.length - 1].fromBlock); } if (claimRate > 0) { Claim storage newClaim = c[c.length++]; uint256 balance = ERC20(token).balanceOf(_owner); // Short cuircit if there is no token to claim if (balance == 0) { return; } // TODO: reduce variables into few statements uint256 targetBalance = balance.mul(posCoeff.add(claimRate)).div(posCoeff); uint256 claimedValue = targetBalance.sub(balance); newClaim.claimedValue = uint128(claimedValue); newClaim.fromBlock = uint128(block.number); require(generateTokens(_owner, newClaim.claimedValue)); emit Claimed(_owner, newClaim.claimedValue); } } function generateTokens(address _to, uint256 _value) internal returns (bool) { if (POSTokenI(token).supportsInterface(bytes4(keccak256("mint(address,uint256)")))) { return MintableTokenI(token).mint(_to, _value); } else if (POSTokenI(token).supportsInterface(bytes4(keccak256("generateTokens(address,uint256)")))) { return MiniMeTokenI(token).generateTokens(_to, _value); } return false; } function claimable(uint256 _blockNumber) internal view returns (bool) { if (_blockNumber < initBlockNumber) return false; return (_blockNumber - initBlockNumber) >= posInterval; } function getClaimRate(uint256 _fromBlock) internal view returns (uint256) { // interval block number when token holder get interests. // if holder didn't claim before, `initBlockNumber` // otherwise, n-th interval block (`initBlockNumber` + k * `posInterval`) uint256 lastIntervalBlock; if (_fromBlock == 0) { // first claim lastIntervalBlock = initBlockNumber; } else { // second or further claim uint256 offset = _fromBlock.sub(initBlockNumber) % posInterval; lastIntervalBlock = _fromBlock.sub(offset); } // # of cumulative claims uint256 pow = block.number.sub(lastIntervalBlock) / posInterval; // no token to claim if (pow == 0) { return 0; } // assume 1 claim is given to reduce loop iteration uint256 rate = posRate; // if claim rate is 10%, // 1st claim: 10% // 2nd claim: 10% + 11% // 3rd claim: 10% + (10% + 11%) * 110% // // ith claim: posRate + [i-1th claim] * (posCoeff + posRate) / posCoeff for (uint256 i = 0; i < pow - 1; i++) { rate = rate.mul(posCoeff.add(posRate)).div(posCoeff).add(posRate); } return rate; } } /// @dev BalanceUpdatableMiniMeToken assumes token controller may update /// token balance inside `onTransfer` function of token controller. contract BalanceUpdatableMiniMeToken is MiniMeToken { /// @dev Override doTransfer function. only modified parts are documented. function doTransfer(address _from, address _to, uint _amount) internal returns(bool) { if (_amount == 0) { Transfer(_from, _to, _amount); return true; } require(parentSnapShotBlock < block.number); require((_to != 0) && (_to != address(this))); uint previousBalanceFrom = balanceOfAt(_from, block.number); require(previousBalanceFrom >= _amount); if (isContract(controller)) { require(TokenController(controller).onTransfer(_from, _to, _amount)); // update balance previousBalanceFrom = balanceOfAt(_from, block.number); require(previousBalanceFrom >= _amount); } updateValueAtNow(balances[_from], previousBalanceFrom - _amount); var previousBalanceTo = balanceOfAt(_to, block.number); require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow updateValueAtNow(balances[_to], previousBalanceTo + _amount); Transfer(_from, _to, _amount); return true; } } /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /** * @dev total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } /** * @title Mintable token * @dev Simple ERC20 Token example, with mintable token creation * @dev Issue: * https://github.com/OpenZeppelin/openzeppelin-solidity/issues/120 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol */ contract MintableToken is StandardToken, Ownable { event Mint(address indexed to, uint256 amount); event MintFinished(); bool public mintingFinished = false; modifier canMint() { require(!mintingFinished); _; } /** * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. */ function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) { totalSupply_ = totalSupply_.add(_amount); balances[_to] = balances[_to].add(_amount); emit Mint(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } /** * @dev Function to stop minting new tokens. * @return True if the operation was successful. */ function finishMinting() onlyOwner canMint public returns (bool) { mintingFinished = true; emit MintFinished(); return true; } } /// @title TokenControllerBridge /// @notice TokenControllerBridge mocks Giveth's `Controller` for /// Zeppelin's `Ownable` `ERC20` Token. contract TokenControllerBridge is ERC20, Ownable { function () public payable { require(isContract(owner)); require(TokenController(owner).proxyPayment.value(msg.value)(msg.sender)); } /// @dev invoke onTransfer function before actual transfer function is executed. function transfer(address _to, uint256 _value) public returns (bool) { if (isContract(owner)) { // owner should be able to generate tokens require(balanceOf(msg.sender) >= _value); require(TokenController(owner).onTransfer(msg.sender, _to, _value)); } return super.transfer(_to, _value); } /// @dev invoke onTransfer function before actual transfer function is executed. function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { if (isContract(owner)) { // owner should be able to generate tokens require(balanceOf(_from) >= _value); require(TokenController(owner).onTransfer(_from, _to, _value)); } return super.transferFrom(_from, _to, _value); } /// @dev invoke onApprove function before actual transfer function is executed. function approve(address _spender, uint256 _value) public returns (bool) { if (isContract(owner)) { require(TokenController(owner).onApprove(msg.sender, _spender, _value)); } return super.approve(_spender, _value); } /// @dev Internal function to determine if an address is a contract /// @param _addr The address being queried /// @return True if `_addr` is a contract function isContract(address _addr) internal view returns(bool) { uint256 size; if (_addr == 0) return false; assembly { size := extcodesize(_addr) } return size > 0; } } /// @title POSMintableTokenAPI /// @notice MintableToken should inherit POSMintableTokenAPI to be able to /// compatible with POSController. contract POSMintableTokenAPI is POSTokenI, TokenControllerBridge { function supportsInterface(bytes4 interfaceID) public view returns (bool) { return interfaceID == bytes4(keccak256("mint(address,uint256)")); // TODO: use bytes4 literal } function transferOwnershipTo(address _to) public { transferOwnership(_to); } } /// @title POSMiniMeTokenAPI /// @notice BalanceUpdatableMiniMeToken should inherit POSMintableTokenAPI to be able to /// compatible with POSController. contract POSMiniMeTokenAPI is POSTokenI, Controlled { function supportsInterface(bytes4 interfaceID) public view returns (bool) { return interfaceID == bytes4(keccak256("generateTokens(address,uint256)")); // TODO: use bytes4 literal } function transferOwnershipTo(address _to) public { changeController(_to); } } /// @dev POSMiniMeToken inherits BalanceUpdatableMiniMeToken to update token balances /// inside `onTransfer` function, POSMiniMeTokenAPI to provdie common /// interface for POSController. // solium-disable no-empty-blocks contract POSMiniMeToken is BalanceUpdatableMiniMeToken, POSMiniMeTokenAPI {} contract RankingBallGoldCustomToken is POSMiniMeToken, RankingBallGoldToken { function RankingBallGoldCustomToken(address _tokenFactory) RankingBallGoldToken(_tokenFactory) public {} }
Contract Security Audit
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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _tokenFactory (address): 0x0000000000000000000000000000000000000000
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000000
Swarm Source
bzzr://6085dcb9ba7e0d8bbcb82d4982818be48b4664f42944424d3df1eeba65e96ee5
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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.