我一直在通过https://etherscan.io/tokens的市值研究最顶尖的区块链初创公司。例如:EOS (EOS) Tronix (TRX) VeChain 等等。我只是不明白他们都想做什么?它们看起来都是如此的相似,如此的基本;没有什么新的东西被引入(或者是否有?)许多人声称正在建立更好的区块链服务,但却在使用Ethereum?还是他们只是利用Ethereum作为众矢之的呢?对我来说,这只是对每一家初创公司发出的不合法的的尖叫声。就像我甚至不明白任何创新都带来了什么。例如,Tronix (TRX)的市值为4,775,337,947美元(截至2018年5月14日),就像这里的代码片段( Ethereum区块链合同):
pragma solidity ^0.4.11;
contract TronToken {
string public name = "Tronix"; // token name
string public symbol = "TRX"; // token symbol
uint256 public decimals = 6; // token digit
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
uint256 public totalSupply = 0;
bool public stopped = false;
uint256 constant valueFounder = 100000000000000000;
address owner = 0x0;
modifier isOwner {
assert(owner == msg.sender);
_;
}
modifier isRunning {
assert (!stopped);
_;
}
modifier validAddress {
assert(0x0 != msg.sender);
_;
}
function TronToken(address _addressFounder) {
owner = msg.sender;
totalSupply = valueFounder;
balanceOf[_addressFounder] = valueFounder;
Transfer(0x0, _addressFounder, valueFounder);
}
function transfer(address _to, uint256 _value) isRunning validAddress returns (bool success) {
require(balanceOf[msg.sender] >= _value);
require(balanceOf[_to] + _value >= balanceOf[_to]);
balanceOf[msg.sender] -= _value;
balanceOf[_to] += _value;
Transfer(msg.sender, _to, _value);
return true;
}
function transferFrom(address _from, address _to, uint256 _value) isRunning validAddress returns (bool success) {
require(balanceOf[_from] >= _value);
require(balanceOf[_to] + _value >= balanceOf[_to]);
require(allowance[_from][msg.sender] >= _value);
balanceOf[_to] += _value;
balanceOf[_from] -= _value;
allowance[_from][msg.sender] -= _value;
Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) isRunning validAddress returns (bool success) {
require(_value == 0 || allowance[msg.sender][_spender] == 0);
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function stop() isOwner {
stopped = true;
}
function start() isOwner {
stopped = false;
}
function setName(string _name) isOwner {
name = _name;
}
function burn(uint256 _value) {
require(balanceOf[msg.sender] >= _value);
balanceOf[msg.sender] -= _value;
balanceOf[0x0] += _value;
Transfer(msg.sender, 0x0, _value);
}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}价值4,775,337,947美元?我知道有很多投机活动在进行,所以价格可能是非常高的。不过,这些初创公司又有什么价值呢?我遗漏了什么或者看不到什么?
发布于 2018-05-15 02:16:54
因此,许多这些公司正在将ICO过程中出售的ERC 20令牌和它们的实际技术分开。把ERC 20令牌想象成合同,在后来开发出真正的货币时,可以用它来交换。
请允许我就你所举的具体例子作出答复:
https://ethereum.stackexchange.com/questions/48510
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