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Reflection Token

//// SPDX-License-Identifier: MIT
// Contract by Bitcoin EVM.
​
pragma solidity ^0.4.23;
contract owned {
address public owner;
constructor() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) onlyOwner public {
owner = newOwner;
}
}
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; }
contract TokenERC20 {
string public name;
string public symbol;
uint8 public decimals = 18;
uint256 public totalSupply;
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
event Transfer(address indexed from, address indexed to, uint256 value);
​
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
event Burn(address indexed from, uint256 value);
​
constructor(
uint256 initialSupply,
string tokenName,
string tokenSymbol
) public {
totalSupply = initialSupply * 10 ** uint256(decimals);
balanceOf[msg.sender] = totalSupply;
name = tokenName;
symbol = tokenSymbol;
}
​
function _transfer(address _from, address _to, uint _value) internal {
​
require(_to != 0x0);
​
require(balanceOf[_from] >= _value);
​
require(balanceOf[_to] + _value > balanceOf[_to]);
​
uint previousBalances = balanceOf[_from] + balanceOf[_to];
​
balanceOf[_from] -= _value;
​
balanceOf[_to] += _value;
emit Transfer(_from, _to, _value);
​
assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
}
​
function transfer(address _to, uint256 _value) public returns (bool success) {
_transfer(msg.sender, _to, _value);
return true;
}
​
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
require(_value <= allowance[_from][msg.sender]);
allowance[_from][msg.sender] -= _value;
_transfer(_from, _to, _value);
return true;
}
​
function approve(address _spender, uint256 _value) public
returns (bool success) {
allowance[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
​
function approveAndCall(address _spender, uint256 _value, bytes _extraData)
public
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
​
function burn(uint256 _value) public returns (bool success) {
require(balanceOf[msg.sender] >= _value);
balanceOf[msg.sender] -= _value;
totalSupply -= _value;
emit Burn(msg.sender, _value);
return true;
}
​
function burnFrom(address _from, uint256 _value) public returns (bool success) {
require(balanceOf[_from] >= _value);
require(_value <= allowance[_from][msg.sender]);
balanceOf[_from] -= _value;
allowance[_from][msg.sender] -= _value;
totalSupply -= _value;
emit Burn(_from, _value);
return true;
}
}
​
contract ERC20Token is owned, TokenERC20 {
uint256 public sellPrice;
uint256 public buyPrice;
mapping (address => bool) public frozenAccount;
​
event FrozenFunds(address target, bool frozen);
​
constructor(
uint256 initialSupply,
string tokenName,
string tokenSymbol
) TokenERC20(initialSupply, tokenName, tokenSymbol) public {}
​
function _transfer(address _from, address _to, uint _value) internal {
require (_to != 0x0);
require (balanceOf[_from] >= _value);
require (balanceOf[_to] + _value >= balanceOf[_to]);
require(!frozenAccount[_from]);
require(!frozenAccount[_to]);
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
emit Transfer(_from, _to, _value);
}
​
function freezeAccount(address target, bool freeze) onlyOwner public {
frozenAccount[target] = freeze;
emit FrozenFunds(target, freeze);
}
​
function setPrices(uint256 newSellPrice, uint256 newBuyPrice) onlyOwner public {
sellPrice = newSellPrice;
buyPrice = newBuyPrice;
}
​
function buy() payable public {
uint amount = msg.value / buyPrice;
_transfer(this, msg.sender, amount);
}
​
function sell(uint256 amount) public {
address myAddress = this;
require(myAddress.balance >= amount * sellPrice);
_transfer(msg.sender, this, amount);
msg.sender.transfer(amount * sellPrice);
}
}
​