All Questions
519 questions
1
vote
1
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529
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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
0
votes
1
answer
540
views
Ethereum stores its own data, how to synchronize the data to other nodes in the future
I use smart contracts in Ethereum to store some string data, how to synchronize these stored string data to other nodes.
As far as I know, these string data are stored in the node's leveldb database, ...
- 437
0
votes
1
answer
912
views
Error encountered during contract execution [Reverted] Problem with Contract
I've sent the transaction - https://ropsten.etherscan.io/tx/0xbecb36319d806edc3617abcbeb1f95e7215cb205dc180088f225c1addd82086f to the contract address and it got reverted.
Could someone explain me ...
0
votes
0
answers
55
views
Write Secret Shared Data onto Ethereum
What would be an approach to do the following:
1) Secret Share data provided from a file
2) Publish the secret shared data onto an Ethereum instance (aleth/geth)
3) Be able to retrieve and ...
2
votes
1
answer
73
views
How is this account able to consistently get her/his transactions with zero gas price mined?
This account https://etherscan.io/address/0xbe7cd41e060cdb07c548d6c65f1d786e43f1c392 is able to keep sending transactions with zero gas price and they are mined. If I try to do the same, my ...
- 131
0
votes
1
answer
83
views
Compiling cpp-ethereum (aleth) sources as a part of my cpp project
I want to use cpp-ethereum aleth smart contracts sources in my altcoin project. My sources can compile with cmake or autotools system. I tried two ways to compile cpp-ethereum with my sources:
Using ...
- 21
0
votes
1
answer
213
views
Are there any API to get real money value equivalent of a transaction?
I know that etherscan shows the total cost of a transaction both in eth and in US dollars.
Is there any api of any kind to be able to get instant value of eth when I send a transaction?
- 343
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 ...
1
vote
1
answer
2k
views
How to get the pending transactions in the whole network from ethereum?
I would like to get the pending transactions in the whole network of ethereum.
For example, the transaction '0xabcdefg' is right now pending in the pool, waiting to be mined by miners, after 12 ...
2
votes
1
answer
1k
views
Generating an address from a public key in C++
Example:
Input key = 0x025f37d20e5b18909361e0ead7ed17c69b417bee70746c9e9c2bcb1394d921d4ae
Output address = 0xd09D3103CcABfb769eDc3e9B01500Ca7241D470A
I have been using an algorithm from keccak-tiny....
- 131
0
votes
1
answer
93
views
ETH: How many transactions are added to the mining pool per time period
Every ETH transaction which is created is first added to a pool of pending transactions, from which then the miners pick them. I wonder whether there is any source (research paper / ETH stats website /...
- 101
1
vote
2
answers
358
views
(error_10) Please enter a valid data value (Must be hex.)MyEther Wallet
I'm trying to deploy a smart contract on Myteherwallet but getting an error while deploying the byte code of the smart contract which is written in solidity remix IDE.
I have even tried to change the ...
- 96
0
votes
1
answer
255
views
Has ERC20 mining been disrupted?
Do you know why a single address of type contract is mining 38% of 0xbtc? Does it mean that a single person has find a way to mine as much 0xbtc as a whole mining pool? Plus how come a contract is ...
- 327
0
votes
1
answer
115
views
After POS is implemented, what stops mining pools from being formed?
There won't be "mining pools" but stake pools but what if someone creates a system where participants stake everthing in one place in order to make the mkst money?
Is this allowed and is this a ...
- 74
0
votes
2
answers
92
views
No longer have tokens after updating Nano S [closed]
I recently updated my Nano S and was required to reset everything. After udpdating I went to MEW to swap my KIN & I had a ETH Ballance of 0.000 & a KIN ballance of 0.000. I have the address ...
- 1
0
votes
1
answer
132
views
Any QuickBlocks tutorial?
From my understanding QuickBlocks is an api in C++ that provides similar services as etherscan API for the ethereum blockchain. Is there a link or tutorial to use quickkblocks because the example in ...
0
votes
1
answer
72
views
Adding the delta to a token transfer
Let's say I have 5 contributors to a pool of a smart contract. They all contributed 1 ether. The smart contract lost 2 ether, and now I want to transfer back the remaining 3 ether to the 5 ...
- 1,375
3
votes
2
answers
2k
views
Get ETH and Token Balances of Wallet address
How do I get a simple and fast balance of ETH and all Token owned/stored within a wallet address?
I have seen similar question and the closer answer was in this demo: http://wbobeirne.com/eth-...
- 121
0
votes
0
answers
57
views
Need to help in adding bigendian support for Keccak256.cpp
Need help in making the keccakf function based on endiness in https://github.com/ethereum/solidity/blob/develop/libdevcore/Keccak256.cpp. I have gone through similar functionality at https://github....
- 101
0
votes
2
answers
377
views
How can I parse internal transactions with light node?
is that possible to receive all transactions from new block with light node and parse all and even internal transactions with the help of its api?
0
votes
2
answers
237
views
Cant send ether from one contract to another
I have 2 contract
contract A{
uint bidValue;
address bidder;
function bid() public payable{
bidValue = msg.value;
bidder = tx.origin;
}
}
And contract B :
import A.sol;
...
- 3
0
votes
1
answer
159
views
plug our own consensus in any one of ethereum client? [duplicate]
Actually i try to add new consensus and will through modifying some consensus to see its effect on transaction throughput.
so what platform should i use that provide me this facility or should i use ...
1
vote
1
answer
237
views
Ethereum receipts blockid and hashes
Preface: The question relates to the relationship between the content of the Ethereum's receipts and the hash of the block header.
Problem description: I wonder, in Ethereum, blockid is based on the ...
- 323
0
votes
1
answer
691
views
How to choose contract address and wallet address
When you start an ICO, to receive a fund from people for your ICO, how do you choose the contract address and your wallet address to receive ETH collected for your ICO?
Thank you.
And excuse me for my ...
- 5
0
votes
1
answer
39
views
problem displaying ico
I created an ICO using ropsten (because I did not have an ETH) and when I search for my ICO on https://etherscan.io, I cannot find it.
I can only find it here: https://ropsten.etherscan.io.
Is it ...
- 5
-1
votes
1
answer
2k
views
How to create and manage a referral link on solidity Smart Contract (unique referral link)
I'm building a DApp in solidity where I want give a bonus to the users that wants promote it.
My problem is that, to use my Referral system, now I need to insert manually the wallet address of the ...
0
votes
0
answers
208
views
How to upgrade Solidity version in geth or ethereum private blockchain
I have built my private blockchain of ethereum and i'm curious to know that how can i upgrade to new version of solidity within geth so that we also can develop smart contract on newer version as ...
- 51
0
votes
0
answers
38
views
ropsten eth что делать
I sent eth 2.62(NETWORK ETH) ON the eth ropsten wallet address 0xe2fcd50EfdD674C26f894aB5ad71fEcB14b7cDA4(BUT NETWORK ETH (myetherwallet.com)NOT ropsten eth). How to transfer to the wallet Eht ...
- 1
0
votes
1
answer
582
views
Relation between GPU specifications and Hash-rate?
I connected two following ethOS miners to Ethermine mining pool (https://ethermine.org).
You can see dashboard of my address here:
https://ethermine.org/miners/...
- 2,700
1
vote
0
answers
74
views
ethereum wallet running a private net 0 peers 0 waiting for blocks
am using geth
VRSION:
1.8.20-stable-24d727b6
and ethereum wallet Ethereum-Wallet-linux64-0-9-3 and i am using Ubuntu 18.04.1 LTS in the geth console i started the miner but either is not ...
- 215
1
vote
1
answer
842
views
Metamask does not react on delivering gasPrice
I am using following code to generate a new transaction using web3.js & metamask:
var web3dictdata = {
gasPrice: web3.toHex(10),
gasLimit: web3.toHex(210000),
to: "...
- 157
1
vote
0
answers
126
views
Parsing ethereum chaindata using leveldb
I'm new here :)
I'm writing a c++ program that parses ethereum chain data. As of present I was able to get the key value pairs by using leveldb::ReadOptions command (as illustrated in the below code) ...
- 21
2
votes
2
answers
574
views
Identify the block which contains a tx
I am deploying a Smart Contract to a private blockchain. Is it possible to get when your node receives the smart contract? Is it possible to identify the block which contains the smart contract? how?
- 511
0
votes
1
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79
views
Where Can Find the Ethereum source code on Proof Of Stake
Looking to find the implementation of Ethereum Proof of Stake Source Code on GitHub.
- 21
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
0
votes
1
answer
58
views
is there any problem if i put GETH/PARITY and webserver in one server?
my website need to use something about ETH,so i have to setup a geth/parity rpc server. is there any problem if i set the geth/parity rpc in my webserver?
- 5
0
votes
1
answer
45
views
Is there an official and public pool of miners/"stakers" participating in the Ethereum blockchain?
With the last discussion about PoW vs PoS, Ethereum planning migrating to pure PoS (Casper), new actors in the scene (EOS)...I have digged into this PoS, pros and cons against PoW.
One of the things ...
- 15
0
votes
2
answers
983
views
Connecting to Ethereum Clients from C application
web3.js is a great library to communicate with client node. I have tried using socket programming from C application to first reach nodejs web app in order to make use of web3.js services to reach a ...
- 592
1
vote
1
answer
2k
views
When do you get eth when mining eth?
I ran Claymore's eth miner for 8 hours and got 200 shares. I set my eth address when I ran the miner, but no eth was deposited to my address. When I restarted the miner the shares were reset to 0.
...
- 205
0
votes
1
answer
2k
views
How is this possible from only one worker/PC?
So I was clicking around on the Ethermine.org site the other day to check out some folks's ETH performance levels and came across one that has me deeply pondering on how he is doing his mining. I ...
- 21
6
votes
3
answers
2k
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 ...
- 61
2
votes
1
answer
1k
views
What is a active wallet vs inactive
In Apr. empower had an airdrop that they said only wallets that had .1 ETH. would get it. Was that the customary requirement in Jan when the crypto blockchain was jammed?. And wasn't that lowered to ....
- 41
1
vote
1
answer
63
views
Where is the state root being updated in Aleth CPP?
Can someone point me to where the state root is updated after each transaction is executed in the block? This is for Aleth
- 229
3
votes
1
answer
1k
views
How Do I take a Snapshot and Migrate Token Holders to a new ERC20 Contract?
I want to Migrate my ERC20 Contract to a new Address, How do I do this ?
- 53
1
vote
0
answers
89
views
can erc20 token transaction work on Fast Sync-ed node ? OR it need Full node to transact any token?
I need help regarding couple doubts.
Which sync method is good for me. My client is asking me to make an Exchange website. Also ERC20 tokens will get transacted in this exchange.
Do I need a full ...
1
vote
1
answer
440
views
How to use / see refunded gas in ETH blockchain?
I buy a GAStoken contract which requires say 21000 GAS at 1 Gwei and later when we delete/destroy the contract when the Gwei is around 50. I understand that we will get around 50% refund of GAS at the ...
- 61
5
votes
2
answers
8k
views
How do you create a new contract instance with an address *and* arguments?
There is the standard way of creating contract instances with the new keyword where you pass arguments like:
MyContract mine = new MyContract(arg1, arg2);
Then there is another way, like in this ...
- 153
1
vote
0
answers
316
views
How do I get a merkle proof (stateHash) from the merkle patricia trie?
So I understand how a patricia trie works, it's a trie using 0 to f as root nodes, and it also removes empty nodes to make leafs and extensions.
What I don't get is how the stateRoot hash is made.
...
- 227
1
vote
0
answers
161
views
Setting up a server to run a geth node - what hardware would you recommend?
I am planning to run a geth node 24/7 on a server, what hardware specs would you recommend for this?
I'd like to download the chain pretty fast and want the block download to be consistently quick.
...
- 11
0
votes
1
answer
272
views
How make other machines join my private ethereum network.
I have created a private ethereum network in my machine, and now I want that other machines join my network.
I think I have to send them the IP of the bootnode, but the question is : what about the ...
- 1,121