All Questions
40 questions
9
votes
3
answers
7k
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 ...
- 93
7
votes
1
answer
10k
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 ...
4
votes
1
answer
649
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 ...
- 33k
15
votes
1
answer
8k
views
How do I create my own mining-pool?
I have about 900+ Mh worth of power and I'm thinking of creating my own pool and putting all my miners in the pool instead of pooling with others. However I've found no instruction on how to do this. ...
- 1,943
4
votes
1
answer
5k
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() ...
- 4,640
4
votes
1
answer
4k
views
Will I lose all mining time if I restart my miner?
An example about solo mining with my own pool:
When I stop the miner after about 3 days and start it again, is the mining time lost to find a block?
- 101
1
vote
1
answer
8k
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/...
- 13
8
votes
2
answers
19k
views
What are some good mining pools? [closed]
I'd like to try a bit of mining, but my GPU is way too weak to mine on my own. I've tried finding reviews on existing mining pools for ether but they're very sparse. Could you recommend a pool?
- 1,720
6
votes
2
answers
10k
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 ...
- 4,640
5
votes
1
answer
18k
views
Can you mine with 2GB cards or less? Thinking about the DAG issues
So I'm really new to mining and I tried setting up a Claymore miner on a rig with a 2GB card, it gave me a error saying something that the DAG wasnt enough and then I looked it up on google and I only ...
5
votes
1
answer
13k
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 ...
- 51
5
votes
1
answer
568
views
What is Miner Extracted Value (MEV)?
I came across MEV in this reddit posted by Flexpool (i think) because Flexpool was claiming MEV was a big improvement and good for miners.
The close I could get to an explanation is that there are ...
- 151
3
votes
1
answer
371
views
cpp-ethereum build 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 ...
- 81
2
votes
2
answers
476
views
Why immutable contracts [closed]
I'm a seasoned engineer, but quite new to blockchain technologies.
I'm trying to grasp the "why" and the real "value" of immutable contracts.
Never seen or heard of pieces of software being ...
- 167
1
vote
1
answer
334
views
cpp-ethereum-develop cmake error [duplicate]
I have downloaded "cpp-ethereum-develop" zip file from github and unzipped it.
While executing "cmake eth"
It gives the following error.
Unknown CMake command "eth_simple_add_executable".
CMake ...
- 81
0
votes
2
answers
1k
views
How to make an action to send record to my database?
I want all transaction of the tokens send to my database through smart contract.
For example, A send 10Token to B, it will show on blockchain, but I also want a function which smart contract will let ...
- 1
59
votes
4
answers
192k
views
For pool mining, what exactly is a share?
Can someone please explain exactly what a share is in the context of pool mining? I have a superficial understanding of testing random nonces to find a hash under the current difficulty. I also ...
- 591
11
votes
1
answer
4k
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 ...
- 441
11
votes
4
answers
18k
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
...
- 133
7
votes
3
answers
3k
views
Is there any c++ library for signing transactions?
I am working on light wallet in c++, and I am looking for a c++ library for signing transactions. I mean something where i will pass transaction and private key and it will return signed transaction ...
- 101
6
votes
2
answers
3k
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 ...
- 323
6
votes
1
answer
934
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 ...
- 323
6
votes
2
answers
850
views
Is it possible to prevent nodes from mining on a private blockchain?
Is it possible to prevent mining on a closed block chain, in a sense that only a set of addresses are allowed to perform transactions but are not allowed to mine?
Mining should always be done by a ...
- 5,284
4
votes
1
answer
501
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 ...
- 184
4
votes
1
answer
2k
views
Is it possible to define a smart contract as the address when mining on a pool like ethermine?
I would like to create a contract that shares mining rewards between multiple accounts.
Can I set this contract address as the target address when running eth-proxy ?
- 6,813
4
votes
1
answer
4k
views
Web3: Get token address from pair address
I am studying all listed pairs on Pancakeswap. I get the pair address from
PCS_FACTORY_ADDRESS="0xca143ce32fe78f1f7019d7d551a6402fc5350c73"
PCS_FACTORY_ADDRESS = Web3.toChecksumAddress(...
- 41
3
votes
1
answer
1k
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
...
- 723
2
votes
1
answer
323
views
How to modify the gasLimit of the private block chain on the console
as the title,How to modify the "gasLimit" of the private block chain on the console?
- 21
2
votes
2
answers
836
views
How to retrieve 1 eth I send by mistake to my smart contract token?
This is the contract as you see there's one eth there https://etherscan.io/address/0x19d71f00354ad302e89ca47e59b68917f9a871d7#code.
I still have ownership of contract.
My eth stuck in smart contracts....
- 23
2
votes
2
answers
765
views
Can't enter any commands after starting eth on Windows
I'm running the eth client (0.9.41) on Windows 10 using the following command:
eth --frontier -b -i
as stated here.
The program hangs and I'm not able to enter any commands. The last produced ...
- 893
2
votes
2
answers
10k
views
Any quick, easy ways to convert ERC-20 tokens?
Are there any quick ways to convert my Airdrop ERC-20 tokens from various old ETH wallets to ETH/BTC...? Looks like I've got a few hundred $ kicking around in old Airdrop tokens.
I've seen a few ...
- 23
2
votes
2
answers
2k
views
Why don't private blockchain networks that do not charge for transactions charge a fee when processing ethereum/ proprietary token on the network?
I ask this questions is there seem to be 2 flavors of blockchain: 1. Public think bitcoin and ethereum. 2. Private hyperledger, SAP Leonaro, etc. The public network charges for transactions which make ...
- 21
1
vote
0
answers
5k
views
Issue "grabbing DAG" for ethminer (but not for expanse)
I installed Geth, and successfully synced the blockchain. However, regardless of whether I use Ethminer, Ethminer with Stratum Proxy, or qtMiner; I always get the same error. It doesn't really throw ...
1
vote
1
answer
352
views
How to invoke multiple oracaliszed queries from a single contract
I want to invoke 2 different orcalized queries from the same contract. I saw a few posts but none of the answer works. Is there any way we can do that? Here is my contract. I was expecting this ...
- 113
1
vote
1
answer
529
views
eth_getLogs was only return erc20 tokens
i have used below command to get every logs on the special blocks but its only return erc20 token logs and ethereum transactions was not listed.
my geth command:
curl --data '{"method":"eth_getLogs",...
- 145
1
vote
2
answers
102
views
Is it possible to fork ethereum so that only specified account(s) can deploy new contract?
Blockchains supporting smart contract are sometimes compared with smartphones in the sense that it is an infrastructure opened to host an indefinite number of Apps, any participant can create and ...
- 73
0
votes
1
answer
238
views
1Inch with flashloan provider
Is there a way to trade on 1Inch using the API and flash-loaned balance. If it is possible please give me some info. I was seeing the DOC to find how to integrate the flash-loan provider with 1Inch ...
- 69
0
votes
3
answers
733
views
REWARD!! PLEASE CAN SOMEBODY HELP ME ETH STUCK - I am a newbie trying to create a trading bot. and came across a tutorial, my 1.1eth stuck Metamask! [duplicate]
SORRY ABOUT THE GRAMMAR AND SPELLING I HAVENT SLEPT FOR ALLMOST 2 days BECAUSE OF THIS..
Here is a bit of a back story on why I have become a little desperate lately to find ways to make crypto faster ...
- 3
0
votes
1
answer
5k
views
Explanation on why I need an address, a pool and a wallet
I am very new to this world so this is a very newby question but as much as I have searched there don't seem to be any newbie getting started guide that spells this stuff out.
I am trying to setup my ...
- 123
0
votes
2
answers
800
views
How can I send tokens to large number of addresses?
I have to send 221,000 tokens (ERC20) to 6477 different addresses. Airdrop guy used some automatic sending app and that tells 1.94 ETH is needed as approx cost of operation to send all this.
Is there ...
