/** *Submitted for verification at Etherscan.io on 2017-11-29 */ pragma solidity ^0.4.18; /** * ERC 20 token * https://github.com/ethereum/EIPs/issues/20 */ interface Token { /// @return total amount of tokens /// function totalSupply() public constant returns (uint256 supply); /// do not declare totalSupply() here, see https://github.com/OpenZeppelin/zeppelin-solidity/issues/434 /// @param _owner The address from which the balance will be retrieved /// @return The balance function balanceOf(address _owner) public constant returns (uint256 balance); /// @notice send `_value` token to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _value) public returns (bool success); /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` /// @param _from The address of the sender /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transferFrom(address _from, address _to, uint256 _value) public returns (bool success); /// @notice `msg.sender` approves `_addr` to spend `_value` tokens /// @param _spender The address of the account able to transfer the tokens /// @param _value The amount of wei to be approved for transfer /// @return Whether the approval was successful or not function approve(address _spender, uint256 _value) public returns (bool success); /// @param _owner The address of the account owning tokens /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens allowed to spent function allowance(address _owner, address _spender) public constant returns (uint256 remaining); event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } /** @title Publica Pebbles (PBL contract) **/ contract Pebbles is Token { string public constant name = "Pebbles"; string public constant symbol = "PBL"; uint8 public constant decimals = 18; uint256 public constant totalSupply = 33787150 * 10**18; uint public launched = 0; // Time of locking distribution and retiring founder; 0 means not launched address public founder = 0xa99Ab2FcC5DdFd5c1Cbe6C3D760420D2dDb63d99; // Founder's address address public team = 0xe32A4bb42AcE38DcaAa7f23aD94c41dE0334A500; // Team's address address public treasury = 0xc46e5D11754129790B336d62ee90b12479af7cB5; // Treasury address mapping (address => uint256) public balances; mapping (address => mapping (address => uint256)) public allowed; uint256 public balanceTeam = 0; // Actual Team's frozen balance = balanceTeam - withdrawnTeam uint256 public withdrawnTeam = 0; uint256 public balanceTreasury = 0; // Treasury's frozen balance function Pebbles() public { balances[founder] = totalSupply; } function transfer(address _to, uint256 _value) public returns (bool success) { if (balances[msg.sender] < _value) { return false; } balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { if (balances[_from] < _value || allowed[_from][msg.sender] < _value) { return false; } allowed[_from][msg.sender] -= _value; balances[_from] -= _value; balances[_to] += _value; Transfer(_from, _to, _value); return true; } function balanceOf(address _owner) public constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) public returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) public constant returns (uint256 remaining) { return allowed[_owner][_spender]; } /**@dev Launch and retire the founder */ function launch() public { require(msg.sender == founder); launched = block.timestamp; founder = 0x0; } /**@dev Give _value PBLs to balances[team] during 5 years (20% per year) after launch * @param _value Number of PBLs */ function reserveTeam(uint256 _value) public { require(msg.sender == founder); require(balances[founder] >= _value); balances[founder] -= _value; balanceTeam += _value; } /**@dev Give _value PBLs to balances[treasury] after 3 months after launch * @param _value Number of PBLs */ function reserveTreasury(uint256 _value) public { require(msg.sender == founder); require(balances[founder] >= _value); balances[founder] -= _value; balanceTreasury += _value; } /**@dev Unfreeze some tokens for team and treasury, if the time has come */ function withdrawDeferred() public { require(msg.sender == team); require(launched != 0); uint yearsSinceLaunch = (block.timestamp - launched) / 1 years; if (yearsSinceLaunch < 5) { uint256 teamTokensAvailable = balanceTeam / 5 * yearsSinceLaunch; balances[team] += teamTokensAvailable - withdrawnTeam; withdrawnTeam = teamTokensAvailable; } else { balances[team] += balanceTeam - withdrawnTeam; balanceTeam = 0; withdrawnTeam = 0; team = 0x0; } if (block.timestamp - launched >= 90 days) { balances[treasury] += balanceTreasury; balanceTreasury = 0; treasury = 0x0; } } function() public { // no direct purchases revert(); } }