White Paper 中国

3.1. 代币名称

EXEES

3.2. 代币符号

EXE

3.3. 总供应量

2,000,000,000,000 EXE

3.4. 汇率

1 EXE = 0.00000001比特币［1聪］

3.5. 以太坊技术

以太坊是一个构建不可阻挡的应用程序的去中心化平台。它运行智能合约：应用程序完全按照程序运行，不会有任何 停工、审查、欺诈或第三方干预的可能性。这些应用程序运行在一个自定义的区块链上，这是一个非常强大、全球共享的基础设施，可以移动价值并代表财产的所有权。这使得开发商能够创建市场，存储债务或承诺的登记，按照过去很长时间(如遗嘱或期货合同)的指示移动资金，以及许多其他尚未发明的功能，都不存在中间人和对手方的风险。
在传统的服务器体系结构中，每个应用程序都必须建立自己的服务器，在隔离的环境下运行自身代码，数据共享十分困难。如果一个应用程序被破坏或脱机，许多用户和其他应用程序都会受到影响。在一个区块链上，任何人都可以设置一个节点来复制所有节点所需的数据，以便所有节点都能达成协议，并得到用户和应用程序开发人员的补偿。智能钱币，智能以太坊钱包是通向以太坊区块链上去中心化应用程序的门户。它允许您持有和保护以太坊和其他建立在以太坊上的加密资产，还可以编写、部署和使用智能合约。

3.6. 为什么选 ERC20/ERC23？

代币合约是如何工作的？下面是代币合约的一个片段，演示它是如何维护 以太坊账户的代币余额的：

1 contract TokenContractFragment { 2 3 // Balances for each account 4 mapping(address => uint256) balances; 5 6 // Owner of account approves the transfer of an amount to another account
7 mapping(address => mapping (address => uint256)) allowed; 8 9 // What is the balance of a particular account? 10 function balanceOf(address _owner) constant returns (uint256 balance) { 11 return balances[_owner]; 12 } 13
14 // Transfer the balance from owner’s account to another account 15 function transfer(address _to, uint256 _amount) returns (bool success) { 16 if (balances[msg.sender] >= _amount 17 && _amount > 0
18 && balances[_to] + _amount > balances[_to]) { 19 balances[msg.sender] ‐= _amount; 20 balances[_to] += _amount; 21 return true; 22 } else { 23 return false; 24 } 25 } 26
27 // Send _value amount of tokens from address _from to address _to 28 // The transferFrom method is used for a withdraw workflow, allowing contracts to send 29 // tokens on your behalf, for example to “deposit” to a contract address and/
or to charge 30 // fees in sub‐currencies; the command should fail unless the _from account has 31 // deliberately authorized the sender of the message via some mechanism; we propose 32 // these standardized APIs for approval:
33 function transferFrom( 34 address _from, 35 address _to, 36 uint256 _amount 37 ) returns (bool success) { 38 if (balances[_from] >= _amount 39 && allowed[_from][msg.sender] >= _amount
40 && _amount > 0 41 && balances[_to] + _amount > balances[_to]) { 42 balances[_from] ‐= _amount; 43 allowed[_from][msg.sender] ‐= _amount; 44 balances[_to] += _amount; 45 return true;
46 } else { 47 return false; 48 } 49 } 50
51 // Allow _spender to withdraw from your account, multiple times, up to the _value amount. 52 // If this function is called again it overwrites the current allowance with _value.
53 function approve(address _spender, uint256 _amount) returns (bool success) { 54 allowed[msg.sender][_spender] = _amount; 55 return true; 56 } 57 }

3.7. EXEES 代币地址

Contract Address: 0xddd0e064bb1c8e3a4ff7b7934e6ebb19718a2556

3.8. EXEES 代币编码

https://etherscan.io/token/0xddd0e064bb1c8e3a4ff7b7934e6ebb19718a2556

3.9. EXEES 智能合约

contract ERC223 {
uint public totalSupply;
// ERC223 and ERC20 functions and events
function transfer(address to, uint value) public returns (bool ok);
function transfer(address to, uint value, bytes data) public returns (bool ok);
event Transfer(address indexed from, address indexed to, uint value, bytes indexed data);
// ERC20 functions and events
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
function approve(address _spender, uint256 _value) public returns (bool success);
function allowance(address _owner, address _spender) public view returns (uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
}