Where communities thrive

  • Join over 1.5M+ people
  • Join over 100K+ communities
  • Free without limits
  • Create your own community
  • Jun 05 2016 10:31
    @alexvandesande banned @adamskee
  • Mar 16 2016 01:12
    @alexvandesande banned @scbosse
Where can I get the API of POST_TRANSACTION?
I am trying to setup eth-netstats for my private networks using the library eth-netstats and eth-net-intelligence-api. Everything works well except the transaction graph and gas price graph, its blank all the time. Did any one face this issue before?
Sorry for a newbie question. Is it possible to create a blockchain token holding certain user information for e.g. some database records but with no currency attribute for e.g. addresses ?
Yoichi Hirai
@dhimanak you can create something like that.
@dhimanak a token contract keeps a number for each address but instead of a number a smart contract can remember other information.
Hi, can I translate the page? https://www.ethereum.org/dao
Translate to other languages (ex. pt-BR), by a existent repo (eg. github of translations)? There are more people doing translations here?
i installed ethereum for exchange coin, but i cann't found ethereum config file. Because I wanted configuartion for localhost connection to ethereum blockchain. How i can config it? And where i may find it
Alexandre Kurth
@ppKrauss we are on a french translation of yellowpaper
Hi @kurthalex , do you have a URL pointing this translation?
Alexandre Kurth
yes but it's the beginning and we'll take our time https://github.com/asseth/yellowpaper
on the "french" branch
Hi can anyone post a tutorail about the open-ethereum-pool ? I got some errors about the api and the redis server.
Anyone knows a link to the ethereum block structure or a diagram? Also anyone can confirms accounts, transactions and state are inside a block?
g. nicholas d'andrea
http://i.stack.imgur.com/afWDt.jpg this diagram helps me
Hi I am very new to ethereum and trying to deploy a hello world contract as explained in https://www.ethereum.org/token ...on test net ... I have 7970 ether mined ... when I try to deploy it says "account does not exist or account balance is too low"
Can someone please help
That url explains how to create a new Ethereum based token, https://www.ethereum.org/greeter might be a good start first :)
Yes, but I have been able to compile the contract, problem is it is not deploying
@Smokyish Yes, but I have been able to compile the contract, problem is it is not deploying
I am trying to created tokens btw
Hello ..... as i am new and i want to make my own crypto coin for my own private network ...so please let me know how to make it and how can i list that coin to any one of crypto exchange for buying and selling.
Makoto Inoue
@Gursminder for the token example, follow the http://www.ethereum.org/token example.
If that's for private network which not everybody can access, I can't see how it's possible to put it in exchange.
hello world
i am also new @Gursminder and i would like to knowe
how to make coin for my private network
anybody who is a mage in this can volunteer to help the both of us.
I installed Mist and when my accounts are up, all ethers I bought are gone. Can anyone help?
Fernando M C de Mello
10 days waiting Sync !!! Is it normal?
-211,647 blocks 25 \peers Conected Cloud 0% ... 15 accounts ZERO balance while EtherScan Shows > 1 Ether trasferred to create its and their contracts .... Wat is happenig with Ethereum Net ?
@Tektonike No, resync, TestNet or Main
Fernando M C de Mello
Main, with 15 accounts deployed !
Yes Waiting REsync !
Fernando M C de Mello
After Upgrade to New versions . 8 in accordance with inicial message ! BKPed accounts (Keystroks) copyed to disc... and waiting for 10 days to atualyze...
@KY-BChain , Ethereum Org have Monitor to offer support to users with problems ? U know about it?
@Tektonike Not as such. It's an open source community, you can get assistant and discussion here as well as other places
Good morning everyone!
Hi all
How can one generate ethers using the ethereum mist wallet
Pawan Singhal
Hi there
I am getting this error while deploying the standard code given on Etherium website to generate tokens on test net
Error: e.message.replace is not a function...
Please can someone help me on this?

this is the code: pragma solidity ^0.4.2;
contract tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData); }

contract MyToken {
/ 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);

/* Initializes contract with initial supply tokens to the creator of the contract */
function MyToken(
    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 (balanceOf[msg.sender] < _value) throw;           // Check if the sender has enough
    if (balanceOf[_to] + _value < balanceOf[_to]) throw; // 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 comunicate 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 (balanceOf[_from] < _value) throw;                 // Check if the sender has enough
    if (balanceOf[_to] + _value < balanceOf[_to]) throw;  // Check for overflows
    if (_value > allowance[_from][msg.sender]) throw;   // 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;

/* This unnamed function is called whenever someone tries to send ether to it */
function () {
    throw;     // Prevents accidental sending of ether


Pawan Singhal
How can I retrieve the password of my Ethereum wallet, I have forgotten it?
Vlad Suciu
Are there any tutorials about state channels? Can there be state channels with more than 2 participants? how are they implemented?
Hi all! is it possible to set rules
regarding coin/token issuance: is it possible to set rules based on external data? through API for example
2) when issuing new coins/token is it possible to distribute proportionally to actual token's owner?