From d331fedb12bb9eee2aaad7432b063534a515843a Mon Sep 17 00:00:00 2001 From: p1r0 Date: Sat, 15 Dec 2018 00:15:07 -0600 Subject: [PATCH] first deploy code --- DCC_ERC20_0.4.18.sol | 236 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 236 insertions(+) create mode 100644 DCC_ERC20_0.4.18.sol diff --git a/DCC_ERC20_0.4.18.sol b/DCC_ERC20_0.4.18.sol new file mode 100644 index 0000000..a0a2cfc --- /dev/null +++ b/DCC_ERC20_0.4.18.sol @@ -0,0 +1,236 @@ +pragma solidity ^0.4.18; + +// ---------------------------------------------------------------------------- +// 'SC1' Decentralized Carbon Credits initial token distribution event +// +// Deployed to : 0xB022F4332cAE44156Cb77Fd4c70e1585C74F0656 +// Symbol : SC1 +// Name : Decentralized Carbon Credits +// Total supply: Gazillion +// Decimals : 18 +// +// Enjoy. +// +// (c) by Moritz Neto & Daniel Bar with BokkyPooBah / Bok Consulting Pty Ltd Au 2017. The MIT Licence. +// ---------------------------------------------------------------------------- + + +// ---------------------------------------------------------------------------- +// Safe maths +// ---------------------------------------------------------------------------- +contract SafeMath { + function safeAdd(uint a, uint b) internal pure returns (uint c) { + c = a + b; + require(c >= a); + } + function safeSub(uint a, uint b) internal pure returns (uint c) { + require(b <= a); + c = a - b; + } + function safeMul(uint a, uint b) internal pure returns (uint c) { + c = a * b; + require(a == 0 || c / a == b); + } + function safeDiv(uint a, uint b) internal pure returns (uint c) { + require(b > 0); + c = a / b; + } +} + + +// ---------------------------------------------------------------------------- +// ERC Token Standard #20 Interface +// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md +// ---------------------------------------------------------------------------- +contract ERC20Interface { + function totalSupply() public constant returns (uint); + function balanceOf(address tokenOwner) public constant returns (uint balance); + function allowance(address tokenOwner, address spender) public constant returns (uint remaining); + function transfer(address to, uint tokens) public returns (bool success); + function approve(address spender, uint tokens) public returns (bool success); + function transferFrom(address from, address to, uint tokens) public returns (bool success); + + event Transfer(address indexed from, address indexed to, uint tokens); + event Approval(address indexed tokenOwner, address indexed spender, uint tokens); +} + + +// ---------------------------------------------------------------------------- +// Contract function to receive approval and execute function in one call +// +// Borrowed from MiniMeToken +// ---------------------------------------------------------------------------- +contract ApproveAndCallFallBack { + function receiveApproval(address from, uint256 tokens, address token, bytes data) public; +} + + +// ---------------------------------------------------------------------------- +// Owned contract +// ---------------------------------------------------------------------------- +contract Owned { + address public owner; + address public newOwner; + + event OwnershipTransferred(address indexed _from, address indexed _to); + + constructor() public { + owner = msg.sender; + } + + modifier onlyOwner { + require(msg.sender == owner); + _; + } + + function transferOwnership(address _newOwner) public onlyOwner { + newOwner = _newOwner; + } + function acceptOwnership() public { + require(msg.sender == newOwner); + emit OwnershipTransferred(owner, newOwner); + owner = newOwner; + newOwner = address(0); + } +} + + +// ---------------------------------------------------------------------------- +// ERC20 Token, with the addition of symbol, name and decimals and assisted +// token transfers +// ---------------------------------------------------------------------------- +contract SC1Token is ERC20Interface, Owned, SafeMath { + string public symbol; + string public name; + uint8 public decimals; + uint public _totalSupply; + uint public startDate; + uint public bonusEnds; + uint public endDate; + + mapping(address => uint) balances; + mapping(address => mapping(address => uint)) allowed; + + + // ------------------------------------------------------------------------ + // Constructor + // ------------------------------------------------------------------------ + constructor () public { + symbol = "SC1"; + name = "Decentralized Carbon Credits"; + decimals = 18; + bonusEnds = now + 1 weeks; + endDate = now + 7 weeks; + + } + + + // ------------------------------------------------------------------------ + // Total supply + // ------------------------------------------------------------------------ + function totalSupply() public constant returns (uint) { + return _totalSupply - balances[address(0)]; + } + + + // ------------------------------------------------------------------------ + // Get the token balance for account `tokenOwner` + // ------------------------------------------------------------------------ + function balanceOf(address tokenOwner) public constant returns (uint balance) { + return balances[tokenOwner]; + } + + + // ------------------------------------------------------------------------ + // Transfer the balance from token owner's account to `to` account + // - Owner's account must have sufficient balance to transfer + // - 0 value transfers are allowed + // ------------------------------------------------------------------------ + function transfer(address to, uint tokens) public returns (bool success) { + balances[msg.sender] = safeSub(balances[msg.sender], tokens); + balances[to] = safeAdd(balances[to], tokens); + emit Transfer(msg.sender, to, tokens); + return true; + } + + + // ------------------------------------------------------------------------ + // Token owner can approve for `spender` to transferFrom(...) `tokens` + // from the token owner's account + // + // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md + // recommends that there are no checks for the approval double-spend attack + // as this should be implemented in user interfaces + // ------------------------------------------------------------------------ + function approve(address spender, uint tokens) public returns (bool success) { + allowed[msg.sender][spender] = tokens; + emit Approval(msg.sender, spender, tokens); + return true; + } + + + // ------------------------------------------------------------------------ + // Transfer `tokens` from the `from` account to the `to` account + // + // The calling account must already have sufficient tokens approve(...)-d + // for spending from the `from` account and + // - From account must have sufficient balance to transfer + // - Spender must have sufficient allowance to transfer + // - 0 value transfers are allowed + // ------------------------------------------------------------------------ + function transferFrom(address from, address to, uint tokens) public returns (bool success) { + balances[from] = safeSub(balances[from], tokens); + allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens); + balances[to] = safeAdd(balances[to], tokens); + emit Transfer(from, to, tokens); + return true; + } + + + // ------------------------------------------------------------------------ + // Returns the amount of tokens approved by the owner that can be + // transferred to the spender's account + // ------------------------------------------------------------------------ + function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { + return allowed[tokenOwner][spender]; + } + + + // ------------------------------------------------------------------------ + // Token owner can approve for `spender` to transferFrom(...) `tokens` + // from the token owner's account. The `spender` contract function + // `receiveApproval(...)` is then executed + // ------------------------------------------------------------------------ + function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { + allowed[msg.sender][spender] = tokens; + emit Approval(msg.sender, spender, tokens); + ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); + return true; + } + + // ------------------------------------------------------------------------ + // 1,000 SC1 Tokens per 1 ETH + // ------------------------------------------------------------------------ + function () public payable { + require(now >= startDate && now <= endDate); + uint tokens; + if (now <= bonusEnds) { + tokens = msg.value * 1200; + } else { + tokens = msg.value * 1000; + } + balances[msg.sender] = safeAdd(balances[msg.sender], tokens); + _totalSupply = safeAdd(_totalSupply, tokens); + emit Transfer(address(0), msg.sender, tokens); + owner.transfer(msg.value); + } + + + + // ------------------------------------------------------------------------ + // Owner can transfer out any accidentally sent ERC20 tokens + // ------------------------------------------------------------------------ + function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { + return ERC20Interface(tokenAddress).transfer(owner, tokens); + } +}