Questions tagged [cpp-ethereum]

The Ethereum C++ client.

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197 views

Is this laptop suitable for Ethereum mining?

I have a laptop with 4 GB of RAM, 1 TB HDD and an i3 processor running Windows 10 and Intel HD Graphics 520. Is there any chance I can mine Ethereum or Litecoin using this setup? If yes please someone ...
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1answer
388 views

How do I know which transaction generated a contract in Factory pattern?

By factory pattern I mean a contract able to deploy other contracts like in this question: simple bakery factory pattern Each time I trigger factoryInstance.newContract(args).then(promise); I get ...
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1answer
379 views

Profiling OpenCL Kernels on Linuix

I'm trying to carry out some reasarch on the performance of Ethminer, specifcally I'm looking to get data for any OpenCL kernels that are created during the mining process. I'm trying to assess the ...
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eth sent to non address due to 2 missing digits off the end of address, can it be retrieved? [duplicate]

Etherereum sent to non address due to 2 missing digits off the end of address, can it be retrieved?
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Will I receive my Ether? Transferred to my wallet while the Etherum wallet was downloading

So I was super excited to get the etherum wallet downloaded, I followed all the steps. As I set it up, after the part where you set your password it prompted me to fund my wallet with ether. I then ...
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2answers
294 views

Recovering funds in ETH wrongly sent between exchanges to address without contract [duplicate]

I sent some funds in ETH from bitstamp to another exchange and missread the warnings on the receiving end telling me not to send from smart contract addresses, the transaction left and its confirmed ...
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0answers
181 views

Ethminer install error

I want to start mining in windows server 2008 ( How to Mine Ether and use Ethereum on Windows?) everything is going perfectly except ethminer(step 9) says JSON-RPC problem. Probably couldn't connect. ...
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1answer
796 views

Is there a difference between geth and the cpp-ethereum CLI?

I am a cpp dev and i want to have a look at the ethereum code so i chose the cpp-ethereum repo. Do geth and cpp-ethereum have the same CLI commands? I wasn`t able to find a list of the commands for ...
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1answer
2k views

Sign raw transaction offline with C++ on arduino

I'm exploring the IoT side of the EVM. I've programmed Arduinos and ESP8266s to interact with a Geth JSON RPC. I'm trying to be minimalistic and avoid NodeJS on the Geth JSON server side. Currently ...
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1answer
136 views

Does Ethereum block stores state, transactions and receipts external to the block?

Does Ethereum block stores state, transactions and receipts external to the block (like in some external storage)? and the block just contains the hashes of State_root hash, Transaction_root hash, ...
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1answer
164 views

Any export keyword in Solidity?

As per documentation we have import features, but do we have any export to file feature in Solidity that I can use inside my smart contract. Got a similar thread at How to export transactions into a ...
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What should I do if I want to add a new method to the token that has been deployed to ethereum [duplicate]

I have issued a token in the ethereum,but now I need to add a new function to this token,Is there any good case to refer to?
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Mist Wallet - I Messed Up

I sent almost 3 ETH from my Bitfinex account to a wallet on Mist. I had just downloaded Mist and was not familiar with the Addresses.... I accidentally sent this ETH to my Mist wallet on the Rinkeby ...
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1answer
65 views

Can i transfer ETH from coinbase to my etherhwallet? [closed]

I have ETH in my coinbase acct, can I transfer them to my etherwallet acct? How can I do it?
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3answers
282 views

Can one receive (fractions of) ETH by simply running Mist?

This document about Ethereum briefly explains how decentralized Apps work: To connect to the network, [people] installed a special program called Mist. (...) Every participating computer receives a ...
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1answer
278 views

Tried to send ethereum to contract address, get error in etherscan (gethdebugtrace)

I sent ethereum to a contract address I made and I always get this error: An error occurred during contract execution: exception What is going wrong here? I used the exact same code provided on ...
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2answers
3k views

Can't send my ETH from Nano S

I've tried three times, keeps cancelling for running out of gas. I can't change the amount of gas, it's static at 21000. Honestly not sure what to do.
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190 views

Remix: Trouble naming a function parameter?

pragma solidity ^0.4.0; contract SignatureStatus { string documentIDhash; struct Signature { string documentID; //ID of the document string studyID; // ID of the study the ...
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2answers
173 views

Is it possible to be part of the Ethereum network only as a client, without storing the whole blockchain inside your app?

I would like to create a desktop app which can send / receive transactions on the Ethereum network. But that would be only one feature of the app. It would have several other features. An example ...
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3answers
423 views

How could I write “sendrawtransaction” in Python?

Since I am using web3 = Web3(HTTPProvider('https://mainnet.infura.io/root@123')) That's why I have to use sendrawtransaction for ether transaction . Now what is the process of write ...
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105 views

Coinbase time limit between transfers

Just wondering if there is a time limit that has to be reached between transfers from Coinbase to MyEtherWallet. Trying to send 0.1 ETH from Coinbase and I get to enter the destination address, the ...
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2answers
259 views

what is the ethereum live network?

By which I can connect the ethereum live network. web3 = Web3(HTTPProvider('http://192.168.3.48:8045')) Here I want to put a ethereum live network .
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1answer
188 views

I want connect ethereum live network, Is this right?

I write "eth" in the terminal , then run it . Then I write in my django code. web3 = Web3(HTTPProvider('http://localhost:8545')) web3 = Web3(IPCProvider()) web3.eth.getBalance('...
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278 views

user api to exchange eth token and wallet address creating using code

Is there any API to help exchange ether or tokens online which will help in coding an exchange. For bitcoin one can generate a wallet address, is it possible to generate a wallet address for Ethereum ...
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1answer
399 views

Geth says it's synced, but is about 50 blocks behind everyone else

So I run a small eth mining pool and the eth node says it's synced, but when I compare the block to the ones on other pools we are about 50-100 blocks behind. When I check in geth it says it's fully ...
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308 views

SSL Support for Communication Between Geth Nodes

We are using private Ethereum network for a multi entity use-case. The problem is that all these entities geth nodes sits behind a firewall which only allows TLS traffic. The node that's broadcasting ...
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1answer
1k views

How to tell ethminer the specific account/address where Ether should be put in?

On the farming machine i have two accounts: > geth account list 0x.......1 0x.......2 i've started ethminer with ethminer -G and the Ether lands in the first account. But i want it being ...
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1answer
295 views

Can Ethereum network exist without ETH currency?

Theoretically speaking, is ETH currency necessary in the future to run the Ethereum network with all its possibilities like Dapp and Smart Contracts? I understand that you need to pay gas to miners, ...
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1answer
542 views

Nested Contracts in Solidity?

As per the Solidity 0.4.16 documentation, contracts are similar to the concept of a Class of an object oriented language. That being said, can we create a Contract within a contract. IF yes, then ...
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1answer
579 views

Accidentally sent ETC to an ETH address [duplicate]

I incorrectly sent some ETC from my bter account to an ETH address on Poloniex. https://etherscan.io/address/0xa257d73760c8918aac1367ee983c1b4341f6c357 https://minergate.com/blockchain/etc/...
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Why is Vitalik Buterin considered the brains of Ethereum even though his Github contributions to the project are negligible? [closed]

As of now Vitalik is the #34 contributor to the main project: https://github.com/ethereum/cpp-ethereum/graphs/contributors Even in the first year, of commits he is still ranked 23rd: https://github....
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1answer
1k views

Where does ethminer mining reward go ? No option to provide wallet address

I did a count on this forum, and seems like most people there mine with ethminer. I've always been using claymore miner which has the -ewal option to provide my ether address, but there's no ...
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2answers
698 views

How many Consensus algorithm does ethereum involve?

I know POW is the Consensus algorithm of ethereum now, and it will be changed to POS. But does ethereum has other Consensus algorithm besides POW and POS? I heard from a man there are other Consensus ...
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1answer
1k views

Stats API Temporarily Down

I deployed ethereum pool, i can connect and send valid share to pool but always the page show Stats API Temporarily Down my config.json { "threads": 2, "coin": "eth", "name":...
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1answer
281 views

Transfering ETH from Coinbase to Parity, but it does not show up on Parity user

I tried to transfer 2 eth from a coinbase account to a Parity user (Not wallet). It does not show up on Parity after 5 hours of waiting. In Coinbase, it says that the transaction is complete, and on ...
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1answer
76 views

Getting errors when sending ETH to a contract on testnet

I am trying to send ETH to a contract I have just created and I am getting errors pragma solidity ^0.4.6; contract Owned { modifier only_owner { if (msg.sender != owner) return; _; } ...
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1answer
6k views

I sent My ETC to my ETH address

I've sent a mistake ETC from ETH address from poloniex. How do i do now. This is my transaction (this is a fresh address) http://gastracker.io/tx/...
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1answer
1k views

Will miners still make Ether after POS?

So, I am new to the entire crypto currency idea although, I am a software developer and I have been planning for years to create a CRM that is fully autonomous and exceptionally secure. Ether's code ...
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1answer
542 views

Is 1080Ti good for mining ETH? [closed]

Hi guys I am thinking of buying some serious rig for mining. Since AMD GPUs are out of stocks, I am thinking to buy 1080Ti. The problem is that I can't find any comparison of hashrate for this card ...
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1answer
242 views

Please help, i accidentally sent some ETC to an ETH wallet

i wonder if anyone can help me out the transaction was completed, poloniex told me that they can't do nothing the coins never got to my wallet but went to the ETC blockchain, understandably is ...
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2answers
394 views

Lost coins of the Ethereum?

Please help me to understand the situation: I sent coins using an Ethereum transaction 0x0ae4b10100ddd1da0a22e6130903294dad57aa763a0a74580660904edc4512b2 Coins from the balance were written off ...
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1answer
361 views

Mining on HD6950 - Getting DAG error

since I just upgraded my rig I got my old GPU laying around doing nothing, so I thought I might start to mine with it. Its an XFX HD 6950 with 2GB of RAM. Im running the following config: Biostar ...
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1answer
8k views

Customize minimum payout on ethermine

On the homepage of eterhmine it says that one of their features is "Customizable minimum payment threshold (Standard: 1 Ether, Minimum: 0.05 Ether, Maximum: 10 Ether)" and yet everything else I'm ...
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1answer
582 views

How to get private key in cpp-ethereum?

I can only find instructions for geth, but cannot find anything about doing it using eth which is part of cpp-ethereum.
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1answer
166 views

The Solc Compiler on OSX - Hello World

I'm trying to do the hello world app seen here https://www.ethereum.org/greeter#compiling-your-contract. It says I should be able to do eth.getCompilers() The first you can get by using a ...
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2answers
771 views

How would you install the Ethminer without sudo access?

I am trying to get Genoil's Ethminer installed on a machine without sudo access. The Github instructions require some packages to be installed. sudo apt-get install git cmake libcryptopp-dev ...
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1answer
438 views

Install Genoil failed [closed]

Trying to install Genoil on ubuntu16 as following with GPU https://github.com/Genoil/cpp-ethereum Since cuda and ethminer have successfully installed before, I just start from: sudo apt-get install ...
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1answer
191 views

Parity Signer: Pending

I am trying to use the send on a certain block feature with parity wallet. I am on windows 7 and installed parity and successfully have it running in the background with the --warp option (I can see ...
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1answer
1k views

eth :: -F and --farm always produce Invalid argument: when attempting to pool mine

How can I launch a pool mining session using the most recent cpp-ethereum? According to the ./eth --help, -F or --farm parameters are needed, but they are not recognized when used! I have a recent ...
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2answers
6k views

How to implement role-based access control to user's private data?

We have this application scenario and try to see if Ethereum, or blockchain in general, is a good solution for this. The basic idea is the user controls a small amount of private sensitive data (e.g....