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Questions tagged [cpp-ethereum]

The Ethereum C++ client.

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11
votes
4answers
17k views

ethminer Failed to submit hashrate

I keep getting an error: ethminer Failed to submit hashrate :( I am very new to this whole mining thing, and just want to learn more. I am using: Geth Version: 1.5.0-unstable ethminer version 1.2.7 ...
8
votes
3answers
5k views

CPU mining JSON_PARSE_ERROR

I just wanted to mine ETH with my CPU. I use Windows 7 64 Bit with ethminer. I started the cpu miner with a batch ethminer -t 6 -C -F http://ethereumpool.co/?miner=5@0x17C0Bea7c44*******...
8
votes
3answers
6k views

Convert an eth key to a geth key

I need to convert my eth key to a geth key. eth put the key in %appdata%\roaming\Web3\keys, and I see it as a .json file. If I move that to the %appdata%\roaming\Ethereum\keystore directory, geth ...
8
votes
3answers
4k views

Mining ETH on HD 6950 DAG allocation problem

I have 2 HD6950's which I wanted to use for ETH mining - but I have the well known DAG allocation problem. I can't find a solution for this problem - that's why I'm asking here. And please don't tell ...
8
votes
1answer
2k views

**Updated** Ethminer - no such file or Directory error after building cpp-ethereum on Ubuntu 14.04

I am new to all of this, although I do some programming on Windows and the web. I have a small rig I want to use for mining ethereum. It is a dell inspiron 560. It has a new Nvidia GE-Force 610 ...
7
votes
1answer
7k views

ETH sent to ETC address

I accidentally sent ALL my ETH on ETC address :( 6 months of mining gone :( I sent from one exchange to fresh address on another exchange, but on ETC ... Is there ANY way to track those coins? I'm ...
7
votes
1answer
567 views

Is it possible to tell whether an address is mist, mew or parity?

How can I tell if an address is from Mist, MyEthereumWallet or Parity? Is there anyway to know? Are they encoded differently?
7
votes
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 ...
7
votes
1answer
3k views

Is there a downloadable Ethereum bootstrap?

I am trying to synchronize a full node, and this is going very slowly, the progress alternates between bursts of high CPU usage (which is fine, it is heavy but importing), and long times with nothing ...
6
votes
2answers
9k views

How to install eth on debian? (symbol lookup error)

I installed from the ubuntu ppa and got this error. ➜ ~ eth eth: symbol lookup error: eth: undefined symbol: _ZN3dev3eth14EthashGPUMiner14s_numInstancesE What can I do / check? I'm on debian ...
6
votes
1answer
848 views

Unable to send raw transaction

i'm working on to the morden testnet and using a nodejs application i wrote (using ethereumjs-util, ethereumjs-tx) i'm trying to push a raw tx on to the testnet. I've tested GETH "eth....
6
votes
2answers
2k views

Why did the DAG file change in block 1080000?

I'm mining to dwarfpool, and all of sudden am getting this message on the account: "DAG file changed in block 1080000" Does this mean that my DAG is out of sync and if yes, how do I resync it, tried ...
6
votes
1answer
249 views

How to implement Ethereum protocol to some tinyOS, e.g, contiki?

I find out Ethereum has many implements to many OS with many different languages. But i don't know if I want to use ethereum as protocol on contiki OS or cooja simulation, so what is the best choice ...
5
votes
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....
5
votes
2answers
637 views

Ethereum Merkle Patricia Trie (Extension node)

I do not have time to look through the source code right now. My questions is: In Ethereum, when is the decision to replace part of a given path with an Extension-node made? I suppose the sole idea ...
5
votes
4answers
404 views

Why do you want to use different implementations of EVM?

Currently there are many implementations of EVM (Java, C++, Python, Go, etc). For example: I will be using Solidity to write DApp on the top of EVM-Java and EVM-Python, why would I want to use EVM-...
5
votes
1answer
381 views

Ethereum Merkle Patricia Trie and Hashes

In Ethereum, there's a hash of all of the 3 tries in each block. Out of curiosity. The docs state that the functionality is supposed to just provide a mapping between 160bit keys and values. I find ...
5
votes
2answers
480 views

Eth Console Won't Start: Invalid Argument Console

Can't Use "Eth Console" Command upon Installing Eth with Spacebrew Hi everyone, I'm learning how to create my own d'apps on the Ethereum blockchain as part of a Master's thesis research process. So ...
5
votes
2answers
444 views

How to exchange ETH to DAI with web3 and node.js

I looking for solution how to convert eth to dai with web3 api. something like https://kyber.network/swap/eth_knc (I can send eth to specyfic contract adress and I receive back DAI to the same ...
5
votes
0answers
349 views

Trying to send ETH from Mist Wallet to Poloniex, received ETC instead [closed]

I want to send both my ETC and ETH to Poloniex. I have a basic understanding of the DAO fork and know nothing about programming. I googled something about a replay attack and using a split contract. ...
4
votes
3answers
1k views

Is there a way to transfer my ETH from a cold storage to a hot storage without compromising it?

At first I wanted to use myetherwallet.com but now I am afraid the code may be hacked / corrupted some day. The cold storage solution seems safer to store ETH in the long run. While I understand how ...
4
votes
1answer
283 views

How to bootstrap AlethZero on Morden testnet?

I am trying to use the testnet using AlethZero. I use this command alethzero --morden as suggested in the wiki. It does not seem to connect to any peer and hence does not sync the blocks. I also tried ...
4
votes
1answer
607 views

Can geth and eth share the same accounts and blockchain?

It appears when I have multiple ethereum clients installed, that they all have their own data, accounts and even their own copy of the blockchain. Is it possible to share accounts and the blockchain ...
4
votes
1answer
524 views

Does Eth have an equivalent to Geth's --fast flag?

In a previous question, I asked how Geth's --fast flag worked. I'm now moving over to using Eth, so my question is: is there an equivalent option to allow Eth to quickly sync the block data? If so, ...
4
votes
1answer
824 views

How can I check which network I'm working on?

When I start eth I get the following header: $ eth (++)Ethereum Beware. You're entering the Frontier! [...] I think i followed the instructions for working on a private network (because i just want ...
4
votes
1answer
452 views

Is possible to transfer data between nodes using cpp-ethereum's whisper protocol?

Right now I am working on developing a standalone application in C++ using libraries of cpp-ethereum, I was looking at the source code for cpp-ethereum and an idea stuck into my mind that wouldn't it ...
4
votes
1answer
14k views

Setting Up Geth / Ethminer - Am I Doing This Right?

My apologies if this has been covered elsewhere, but I several different guides and sources, both "official" documentation and not, about how to get started for mining. I feel I have followed the ...
4
votes
1answer
255 views

Stuck in sync process

Node type: geth/eth OS: windows 64 bit Network type: main Mist version: 0.4.0 (trying to update to 0.5.2) The problem is my mist wallet wont sync, i have taked a screenshot of Geth running and mist, ...
4
votes
1answer
223 views

Alethzero QOpenGLWidget issue

I have downloaded and built the latest alethzero client. I have Qt5.5 installed. Running on Ubuntu 14.04 qt.network.ssl: QSslSocket: cannot resolve SSLv2_client_method qt.network.ssl: QSslSocket: ...
4
votes
1answer
4k views

How can I import geth accounts into eth?

I had two accounts under ~/.ethereum/keystore when I used geth a while ago. I got a new PC, recompiled only the C++ version and I can't see my two accounts in eth. web3.admin.eth.allAccounts() ...
4
votes
1answer
3k views

How to download/install alethzero ethereum client download windows 10?

I am new to Ethereum and when i see some videos i found they are using alethzero ethereum client installed and running contracts. I am unable to find from where can i download alethzero ethereum ...
4
votes
1answer
91 views

Strange popup window trying to send ether when I run aleth zero. What should I do?

I ran aleth zero and mined with aleth one a while back. I had mined some ether from a mining pool. Now when I run aleth zero (updated client for windows), I get an annoying and unstoppable pop up ...
4
votes
1answer
3k views

The ERC-20 Token Transfer might have Failed (ErrCode: unable to locate corresponding Transfer event log), check with sender

EtherScan.io is showing error: The ERC-20 Token Transfer might have Failed (ErrCode: unable to locate corresponding Transfer event log), check with sender. Transactions are successful but users are ...
4
votes
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 ...
4
votes
1answer
806 views

cpp-ethereum develop json error

I have cloned the cpp-ethereum in Linux (centOS) from git as follows as suggested in cpp-ethereum-develop cmake error git clone https://github.com/ethereum/cpp-ethereum cd cpp-ethereum git ...
4
votes
1answer
1k views

Create a new contract by JSON-RPC of cpp-ethereum

I want to create a new contract by JSON-RPC and cpp-ethereum. I find out eth_sendTransaction can help me to do this. And let do it, I need to set "to" parameter like that: to: DATA, 20 Bytes - (...
4
votes
1answer
417 views

web3 api in eth

Since, I am not able to use the go client in the multi node mode due to a bug (Multi node private local ethereum and send transaction), I tried to use the c++ client eth. Tried using the go client ...
4
votes
2answers
1k views

How can I get MHash value when ethminer doesn't provide one?

In order to set up the ethminer I need the MHash value. I'm testing CPU, so I ran: ethminer -M and I got a weird output: Trial 1... 0 Trial 2... 0 Trial 3... 0 Trial 4... DAG 17:33:59.896|miner0 ...
4
votes
0answers
68 views

Fail writing to state database. Bombing out [closed]

Problems updating state on C++ ethereum on Ubuntu Linux 14.04 disks, /tmp have plenty of space. eth was installed from ethereum ppa, is used intermittently to check balances and do transfers (...
4
votes
1answer
814 views

Is there a way to “clean up” the ethminer installation (ethminer after crashes)?

I'm NOT running Geth or any other wallet on the miners. I have dedicated systems for mining running Ubuntu 15.04, 64 bit desktop with ethminer compiled from cpp-ethereum. Motherboards/Processors range ...
3
votes
2answers
2k views

Eth address can't be used for mining

I'm trying to mine from my linux, but when I run the following command: ethminer -F http://ethereumpool.co/?miner=4@ERroYPhmyUFMgPNRJEDNBlaBlaBla@Optional I get error JSON_PARSE_ERROR: The JSON-...
3
votes
1answer
140 views

is the code for the ETH contract available?

As the initial ETH coins were minted and not mined, the contract which was used must exist somewhere. It would be very interesting to study this contract in order to verify how new ETH can be minted....
3
votes
1answer
1k views

What's the difference between eth and cpp-ethereum?

In Ubuntu, what's the difference between apt-get install eth vs. apt-get install cpp-ethereum? They both seem to install the same packages but seemingly not the same versions.
3
votes
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 ...
3
votes
1answer
239 views

Details about w3.eth.account.create()

I am currently getting started into developing involving Ethereum. I know what the function w3.eth.account.create() does and returns but I am unsure what happens behind the scenes. Specifically, ...
3
votes
1answer
112 views

Convert Eth Key to Geth Key

I have some eth keys that I would like to convert to geth keys. There was a previous post about this, however the solution provided was to use ethkey, but this tool has now been deprecated. Any help ...
3
votes
1answer
263 views

5th time downloading Blockchain 15 days

I started with geth wallet the first time. Got to near the finish and it started itself over at the beginning. The last four times have been with parity, which seems to queue forevever and then ...
3
votes
1answer
302 views

My address is no longer listed in cpp-ethereum's eth. How do I access my wallet/account?

Context I'm using Ubuntu 14.04 LTS. I cloned the cpp-ethereum repo and built everything using the makefiles. Now (in the same path) I have a bunch of executable binaries in folders such as eth, ...
3
votes
1answer
2k views

How to run my own full node pool? (error: unexpected identifier)

When I run this geth with the following parameters: geth --rpc --rpcaddr "my ip" --rpcport 8545 I get an error like: (anonymous): Line 1:13 Unexpected identifier (and 1 more errors) Please help.
3
votes
1answer
663 views

ethminer || Segmentation fault: 11 [duplicate]

I recently updated cpp-ethereum. I am now on ethminer version 1.2.3 when I start it to mine with ethminer --opencl-device 1 I get the folowing output. Getting work package... Segmentation fault: 11 ...