Linked Questions

4
votes
2answers
748 views

Contract not deploying on blockchain using solc & web3

I am using the npm package of solc to compile the contracts and accessing it as given here. It is compiling my contracts. But when I try to deploy the contract using web3.eth.sendTransaction({data: ...
3
votes
1answer
2k views

Greeter variables are all undefined and contract doesn't run

I'm attempting to run the greeter contract on the live network. I'm following the commands as per the official tutorial, which worked on a test network when I tried it a while ago (on a different ...
2
votes
2answers
2k views

How to deploy compiled contract file using the geth cli?

So I've followed the greeter contract tutorial from here to deploy a contract to my private cloud. It works fine and all, but it is rather difficult that I need to create a string from my contract and ...
4
votes
1answer
555 views

Understanding TokenCreator/OwnedToken example from Solidity documentation

Here's the page containing the example https://solidity.readthedocs.io Here are two contracts that are supposed to work together(my questions are below): Here's how I think it works. Please correct ...
5
votes
1answer
586 views

After loading the solidity script, i get null [object Object]. What should i do?

I wrote a contract greeter and mortal, they are as follows: contract mortal { address owner; function mortal() { owner = msg.sender; } function kill() { if (msg.sender == owner) ...
2
votes
1answer
607 views

Calling a smart contract in response to an external event

I am trying to log all access operations on a file storage in Ethereum. The access operations are read, write, update and delete. Every time, a user does any of these operations on the file storage, I ...
3
votes
1answer
422 views

Gas not enough and not able to run functions

I am a new comer to the Ethereum and I am writing a piece of smart contract for my project. I used Win 10 and Mist 0.8.8 with the testnet that started with "R". The contract code has the functions of ...
1
vote
0answers
553 views

greeter.address Undefined while deploying the contracts

From Past 3 Days I am trying to deploy my 1st greeter contract But always I am getting the Undefined greeter.address. Below Steps I am following 1) geth Version C:\Block_Chain\Eth_1>geth version ...
1
vote
1answer
368 views

Problem compiling/deploying Solidity contract

I am trying to compile and deploy simple contract : var Web3 = require("web3"); var web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545")); var source = "" + "contract test {\n" ...
5
votes
1answer
204 views

Help needed - Contract is deployed but execution of method always returns Zero

I have created a private blockchain and trying to create a sample contract given in https://github.com/ethereum/go-ethereum/wiki/Contracts-and-Transactions I could create, compile and even deploy the ...
5
votes
1answer
227 views

web3.eth.compile.solidity(source) throws me Invalid JSON RPC response

I am relatively new to Blockchains and when I execute the following command I am getting an error. contract mortal { address owner; function mortal() { owner = msg.sender; } ...
1
vote
1answer
137 views

Can't fix the “block gas limit” error for the greeter example.

I'm trying to build my first smart contract. I'm trying to do the example here https://www.ethereum.org/greeter. So it seems that this example is so out of date it doesn't work at all. I've been ...
1
vote
2answers
92 views

Greeter Contract - deploy command results in “undefined” [duplicate]

I am trying to deploy the Greeter contract on a private test chain following this guide (Deploying the Greeter contract via the geth CLI is not registering in my private blockchain) When I get to the ...
0
votes
1answer
60 views

How do miners work in private network? What is their importance?

I'm a newbie to the blockchain technology and working on the smart contracts using Ethereum. Help me understand the concept of miner in this technology. I have followed the steps given on https://...
1
vote
0answers
22 views

Ethereum Contract Deployment [duplicate]

var greeterContract = web3.eth.contract(greeterCompiled.greeter.info.abiDefinition); I am getting this type of error on geth console: TypeError:Cannot access member 'info' of undefined at :1:41 I ...

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