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  1 pragma solidity ^0.4.4;   2    3    4 /// @title Golem Network Token (GNT) - crowdfunding code for Golem Project   5 contract GolemNetworkToken {   6     string public constant name = "Golem Network Token";   7     string public constant symbol = "GNT";   8     uint8 public constant decimals = 18;  // 18 decimal places, the same as ETH.   9   10     uint256 public constant tokenCreationRate = 1000;  11   12     // The funding cap in weis.  13     uint256 public constant tokenCreationCap = 820000 ether * tokenCreationRate;  14     uint256 public constant tokenCreationMin = 150000 ether * tokenCreationRate;  15   16     uint256 public fundingStartBlock;  17     uint256 public fundingEndBlock;  18   19     // The flag indicates if the GNT contract is in Funding state.  20     bool public funding = true;  21   22     // Receives ETH and its own GNT endowment.  23     address public golemFactory;  24   25     // Has control over token migration to next version of token.  26     address public migrationMaster;  27   28     GNTAllocation lockedAllocation;  29   30     // The current total token supply.  31     uint256 totalTokens;  32   33     mapping (address => uint256) balances;  34   35     address public migrationAgent;  36     uint256 public totalMigrated;  37   38     event Transfer(address indexed _from, address indexed _to, uint256 _value);  39     event Migrate(address indexed _from, address indexed _to, uint256 _value);  40     event Refund(address indexed _from, uint256 _value);  41   42     function GolemNetworkToken(address _golemFactory,  43                                address _migrationMaster,  44                                uint256 _fundingStartBlock,  45                                uint256 _fundingEndBlock) {  46   47         if (_golemFactory == 0) throw;  48         if (_migrationMaster == 0) throw;  49         if (_fundingStartBlock <= block.number) throw;  50         if (_fundingEndBlock   <= _fundingStartBlock) throw;  51   52         lockedAllocation = new GNTAllocation(_golemFactory);  53         migrationMaster = _migrationMaster;  54         golemFactory = _golemFactory;  55         fundingStartBlock = _fundingStartBlock;  56         fundingEndBlock = _fundingEndBlock;  57     }  58   59     /// @notice Transfer `_value` GNT tokens from sender's account  60     /// `msg.sender` to provided account address `_to`.  61     /// @notice This function is disabled during the funding.  62     /// @dev Required state: Operational  63     /// @param _to The address of the tokens recipient  64     /// @param _value The amount of token to be transferred  65     /// @return Whether the transfer was successful or not  66     function transfer(address _to, uint256 _value) returns (bool) {  67         // Abort if not in Operational state.  68         if (funding) throw;  69   70         var senderBalance = balances[msg.sender];  71         if (senderBalance >= _value && _value > 0) {  72             senderBalance -= _value;  73             balances[msg.sender] = senderBalance;  74             balances[_to] += _value;  75             Transfer(msg.sender, _to, _value);  76             return true;  77         }  78         return false;  79     }  80   81     function totalSupply() external constant returns (uint256) {  82         return totalTokens;  83     }  84   85     function balanceOf(address _owner) external constant returns (uint256) {  86         return balances[_owner];  87     }  88   89     // Token migration support:  90   91     /// @notice Migrate tokens to the new token contract.  92     /// @dev Required state: Operational Migration  93     /// @param _value The amount of token to be migrated  94     function migrate(uint256 _value) external {  95         // Abort if not in Operational Migration state.  96         if (funding) throw;  97         if (migrationAgent == 0) throw;  98   99         // Validate input value. 100         if (_value == 0) throw; 101         if (_value > balances[msg.sender]) throw; 102  103         balances[msg.sender] -= _value; 104         totalTokens -= _value; 105         totalMigrated += _value; 106         MigrationAgent(migrationAgent).migrateFrom(msg.sender, _value); 107         Migrate(msg.sender, migrationAgent, _value); 108     } 109  110     /// @notice Set address of migration target contract and enable migration 111     /// process. 112     /// @dev Required state: Operational Normal 113     /// @dev State transition: -> Operational Migration 114     /// @param _agent The address of the MigrationAgent contract 115     function setMigrationAgent(address _agent) external { 116         // Abort if not in Operational Normal state. 117         if (funding) throw; 118         if (migrationAgent != 0) throw; 119         if (msg.sender != migrationMaster) throw; 120         migrationAgent = _agent; 121     } 122  123     function setMigrationMaster(address _master) external { 124         if (msg.sender != migrationMaster) throw; 125         if (_master == 0) throw; 126         migrationMaster = _master; 127     } 128  129     // Crowdfunding: 130  131     /// @notice Create tokens when funding is active. 132     /// @dev Required state: Funding Active 133     /// @dev State transition: -> Funding Success (only if cap reached) 134     function create() payable external { 135         // Abort if not in Funding Active state. 136         // The checks are split (instead of using or operator) because it is 137         // cheaper this way. 138         if (!funding) throw; 139         if (block.number < fundingStartBlock) throw; 140         if (block.number > fundingEndBlock) throw; 141  142         // Do not allow creating 0 or more than the cap tokens. 143         if (msg.value == 0) throw; 144         if (msg.value > (tokenCreationCap - totalTokens) / tokenCreationRate) 145             throw; 146  147         var numTokens = msg.value * tokenCreationRate; 148         totalTokens += numTokens; 149  150         // Assign new tokens to the sender 151         balances[msg.sender] += numTokens; 152  153         // Log token creation event 154         Transfer(0, msg.sender, numTokens); 155     } 156  157     /// @notice Finalize crowdfunding 158     /// @dev If cap was reached or crowdfunding has ended then: 159     /// create GNT for the Golem Factory and developer, 160     /// transfer ETH to the Golem Factory address. 161     /// @dev Required state: Funding Success 162     /// @dev State transition: -> Operational Normal 163     function finalize() external { 164         // Abort if not in Funding Success state. 165         if (!funding) throw; 166         if ((block.number <= fundingEndBlock || 167              totalTokens < tokenCreationMin) && 168             totalTokens < tokenCreationCap) throw; 169  170         // Switch to Operational state. This is the only place this can happen. 171         funding = false; 172  173         // Create additional GNT for the Golem Factory and developers as 174         // the 18% of total number of tokens. 175         // All additional tokens are transfered to the account controller by 176         // GNTAllocation contract which will not allow using them for 6 months. 177         uint256 percentOfTotal = 18; 178         uint256 additionalTokens = 179             totalTokens * percentOfTotal / (100 - percentOfTotal); 180         totalTokens += additionalTokens; 181         balances[lockedAllocation] += additionalTokens; 182         Transfer(0, lockedAllocation, additionalTokens); 183  184         // Transfer ETH to the Golem Factory address. 185         if (!golemFactory.send(this.balance)) throw; 186     } 187  188     /// @notice Get back the ether sent during the funding in case the funding 189     /// has not reached the minimum level. 190     /// @dev Required state: Funding Failure 191     function refund() external { 192         // Abort if not in Funding Failure state. 193         if (!funding) throw; 194         if (block.number <= fundingEndBlock) throw; 195         if (totalTokens >= tokenCreationMin) throw; 196  197         var gntValue = balances[msg.sender]; 198         if (gntValue == 0) throw; 199         balances[msg.sender] = 0; 200         totalTokens -= gntValue; 201  202         var ethValue = gntValue / tokenCreationRate; 203         Refund(msg.sender, ethValue); 204         if (!msg.sender.send(ethValue)) throw; 205     } 206 } 207  208  209 /// @title Migration Agent interface 210 contract MigrationAgent { 211     function migrateFrom(address _from, uint256 _value); 212 } 213  214  215 /// @title GNT Allocation - Time-locked vault of tokens allocated 216 /// to developers and Golem Factory 217 contract GNTAllocation { 218     // Total number of allocations to distribute additional tokens among 219     // developers and the Golem Factory. The Golem Factory has right to 20000 220     // allocations, developers to 10000 allocations, divides among individual 221     // developers by numbers specified in  `allocations` table. 222     uint256 constant totalAllocations = 30000; 223  224     // Addresses of developer and the Golem Factory to allocations mapping. 225     mapping (address => uint256) allocations; 226  227     GolemNetworkToken gnt; 228     uint256 unlockedAt; 229  230     uint256 tokensCreated = 0; 231  232     function GNTAllocation(address _golemFactory) internal { 233         gnt = GolemNetworkToken(msg.sender); 234         unlockedAt = now + 6 * 30 days; 235  236         // For the Golem Factory: 237         allocations[_golemFactory] = 20000; // 12/18 pp of 30000 allocations. 238  239         // For developers: 240         allocations[0x9d3F257827B17161a098d380822fa2614FF540c8] = 2500; // 25.0% of developers' allocations (10000). 241         allocations[0xd7406E50b73972Fa4aa533a881af68B623Ba3F66] =  730; //  7.3% of developers' allocations. 242         allocations[0xd15356D05A7990dE7eC94304B0fD538e550c09C0] =  730; 243         allocations[0x3971D17B62b825b151760E2451F818BfB64489A7] =  730; 244         allocations[0x95e337d09f1bc67681b1cab7ed1125ea2bae5ca8] =  730; 245         allocations[0x0025C58dB686b8CEce05CB8c50C1858b63Aa396E] =  730; 246         allocations[0xB127FC62dE6ca30aAc9D551591daEDdeBB2eFD7A] =  630; //  6.3% of developers' allocations. 247         allocations[0x21AF2E2c240a71E9fB84e90d71c2B2AddE0D0e81] =  630; 248         allocations[0x682AA1C3b3E102ACB9c97B861d595F9fbfF0f1B8] =  630; 249         allocations[0x6edd429c77803606cBd6Bb501CC701a6CAD6be01] =  630; 250         allocations[0x5E455624372FE11b39464e93d41D1F6578c3D9f6] =  310; //  3.1% of developers' allocations. 251         allocations[0xB7c7EaD515Ca275d53e30B39D8EBEdb3F19dA244] =  138; //  1.38% of developers' allocations. 252         allocations[0xD513b1c3fe31F3Fe0b1E42aa8F55e903F19f1730] =  135; //  1.35% of developers' allocations. 253         allocations[0x70cac7f8E404EEFce6526823452e428b5Ab09b00] =  100; //  1.0% of developers' allocations. 254         allocations[0xe0d5861e7be0fac6c85ecde6e8bf76b046a96149] =  100; 255         allocations[0x17488694D2feE4377Ec718836bb9d4910E81D9Cf] =  100; 256         allocations[0xb481372086dEc3ca2FCCD3EB2f462c9C893Ef3C5] =  100; 257         allocations[0xFB6D91E69CD7990651f26a3aa9f8d5a89159fC92] =   70; //  0.7% of developers' allocations. 258         allocations[0xE2ABdAe2980a1447F445cb962f9c0bef1B63EE13] =   70; 259         allocations[0x729A5c0232712caAf365fDd03c39cb361Bd41b1C] =   70; 260         allocations[0x12FBD8fef4903f62e30dD79AC7F439F573E02697] =   70; 261         allocations[0x657013005e5cFAF76f75d03b465cE085d402469A] =   42; //  0.42% of developers' allocations. 262         allocations[0xD0AF9f75EA618163944585bF56aCA98204d0AB66] =   25; //  0.25% of developers' allocations. 263     } 264  265     /// @notice Allow developer to unlock allocated tokens by transferring them 266     /// from GNTAllocation to developer's address. 267     function unlock() external { 268         if (now < unlockedAt) throw; 269  270         // During first unlock attempt fetch total number of locked tokens. 271         if (tokensCreated == 0) 272             tokensCreated = gnt.balanceOf(this); 273  274         var allocation = allocations[msg.sender]; 275         allocations[msg.sender] = 0; 276         var toTransfer = tokensCreated * allocation / totalAllocations; 277  278         // Will fail if allocation (and therefore toTransfer) is 0. 279         if (!gnt.transfer(msg.sender, toTransfer)) throw; 280     } 281 }