- instalar na pasta de linguagens do sublime
Pegar ethereum falsos: faceuta
- Gist Você precisa criar um arquivo no Gist, exemplo, colar sua carteira no texto e compartilhar o link através do share button nesse formato: https://gist.github.com/renanserrano/8a835ceeba542b0e86428c6280e506d5 e colar na página da faucet
Após colar o código, p/ criar cotas de uma empres, insira as seguintes infos no menu:
- initial supply: 100
- decimals: 0
- simbolo %
pragma solidity ^0.4.8;
contract tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData); }
/* BioToken é o nome que eu dei, vc pode colocar qquer um */
contract BioToken {
/* Public variables of the token */
string public standard = 'Token 0.1';
string public name;
string public symbol;
uint8 public decimals;
uint256 public totalSupply;
/* This creates an array with all balances */
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
/* This generates a public event on the blockchain that will notify clients */
event Transfer(address indexed from, address indexed to, uint256 value);
/* This notifies clients about the amount burnt */
event Burn(address indexed from, uint256 value);
/* Initializes contract with initial supply tokens to the creator of the contract */
function BioToken(
uint256 initialSupply,
string tokenName,
uint8 decimalUnits,
string tokenSymbol
) {
balanceOf[msg.sender] = initialSupply; // Give the creator all initial tokens
totalSupply = initialSupply; // Update total supply
name = tokenName; // Set the name for display purposes
symbol = tokenSymbol; // Set the symbol for display purposes
decimals = decimalUnits; // Amount of decimals for display purposes
}
/* Send coins */
function transfer(address _to, uint256 _value) {
if (_to == 0x0) burn; // Prevent transfer to 0x0 address. Use burn() instead
if (balanceOf[msg.sender] < _value) burn; // Check if the sender has enough
if (balanceOf[_to] + _value < balanceOf[_to]) burn; // Check for overflows
balanceOf[msg.sender] -= _value; // Subtract from the sender
balanceOf[_to] += _value; // Add the same to the recipient
Transfer(msg.sender, _to, _value); // Notify anyone listening that this transfer took place
}
/* Allow another contract to spend some tokens in your behalf */
function approve(address _spender, uint256 _value)
returns (bool success) {
allowance[msg.sender][_spender] = _value;
return true;
}
/* Approve and then communicate the approved contract in a single tx */
function approveAndCall(address _spender, uint256 _value, bytes _extraData)
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
/* A contract attempts to get the coins */
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
if (_to == 0x0) burn; // Prevent transfer to 0x0 address. Use burn() instead
if (balanceOf[_from] < _value) burn; // Check if the sender has enough
if (balanceOf[_to] + _value < balanceOf[_to]) burn; // Check for overflows
if (_value > allowance[_from][msg.sender]) burn; // Check allowance
balanceOf[_from] -= _value; // Subtract from the sender
balanceOf[_to] += _value; // Add the same to the recipient
allowance[_from][msg.sender] -= _value;
Transfer(_from, _to, _value);
return true;
}
function burn(uint256 _value) returns (bool success) {
if (balanceOf[msg.sender] < _value) burn; // Check if the sender has enough
balanceOf[msg.sender] -= _value; // Subtract from the sender
totalSupply -= _value; // Updates totalSupply
Burn(msg.sender, _value);
return true;
}
function burnFrom(address _from, uint256 _value) returns (bool success) {
if (balanceOf[_from] < _value) burn; // Check if the sender has enough
if (_value > allowance[_from][msg.sender]) burn; // Check allowance
balanceOf[_from] -= _value; // Subtract from the sender
totalSupply -= _value; // Updates totalSupply
Burn(_from, _value);
return true;
}
}
INFELIZMENTE O CÓDIGO ABAIXO NÃO SOFREU DEPLOY Mesmo alterando o burn por outro como require inúmeros erros começam a saltar.
pragma solidity ^0.4.2;
contract token { function transfer(address receiver, uint amount){ } }
contract Crowdsale {
address public beneficiary;
uint public fundingGoal; uint public amountRaised; uint public deadline; uint public price;
token public tokenReward;
mapping(address => uint256) public balanceOf;
bool fundingGoalReached = false;
event GoalReached(address beneficiary, uint amountRaised);
event FundTransfer(address backer, uint amount, bool isContribution);
bool crowdsaleClosed = false;
/* data structure to hold information about campaign contributors */
/* at initialization, setup the owner */
function Crowdsale(
address ifSuccessfulSendTo,
uint fundingGoalInEthers,
uint durationInMinutes,
uint etherCostOfEachToken,
token addressOfTokenUsedAsReward
) {
beneficiary = ifSuccessfulSendTo;
fundingGoal = fundingGoalInEthers * 1 ether;
deadline = now + durationInMinutes * 1 minutes;
price = etherCostOfEachToken * 1 ether;
tokenReward = token(addressOfTokenUsedAsReward);
}
/* The function without name is the default function that is called whenever anyone sends funds to a contract */
function () payable {
if (crowdsaleClosed) burn;
uint amount = msg.value;
balanceOf[msg.sender] = amount;
amountRaised += amount;
tokenReward.transfer(msg.sender, amount / price);
FundTransfer(msg.sender, amount, true);
}
modifier afterDeadline() { if (now >= deadline) _; }
/* checks if the goal or time limit has been reached and ends the campaign */
function checkGoalReached() afterDeadline {
if (amountRaised >= fundingGoal){
fundingGoalReached = true;
GoalReached(beneficiary, amountRaised);
}
crowdsaleClosed = true;
}
function safeWithdrawal() afterDeadline {
if (!fundingGoalReached) {
uint amount = balanceOf[msg.sender];
balanceOf[msg.sender] = 0;
if (amount > 0) {
if (msg.sender.send(amount)) {
FundTransfer(msg.sender, amount, false);
} else {
balanceOf[msg.sender] = amount;
}
}
}
if (fundingGoalReached && beneficiary == msg.sender) {
if (beneficiary.send(amountRaised)) {
FundTransfer(beneficiary, amountRaised, false);
} else {
//If we fail to send the funds to beneficiary, unlock funders balance
fundingGoalReached = false;
}
}
}
}