All Questions
694 questions
0
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10
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Get ETH back from smart contract that was deployed almost a year ago
almost a year ago i fell for a contract scam and Im still confused if I CAN or cannot get the ETH back from it, its still sitting in the contract for almost 300+ days now.
code used in remix that was ...
- 30.2k
0
votes
1
answer
348
views
CLAIMING MY RETIK TOKENS IF MY META MASK WALLET IS COMPROMISED?
During the presale of Retik I bought 5682 tokens. When it came time to claim Retik only allowed 5% a week for 20 weeks to be claimed. I had purchased Retik and linked my Meta Mask wallet to Retik to ...
CommunityBot
- 1
1
vote
2
answers
359
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 ...
CommunityBot
- 1
0
votes
0
answers
8
views
Two of my transactions were not completed
Two of my transactions were not completed but I was charged for them. How do I get the fees back? It's around $25.
1
vote
1
answer
329
views
web3.admin.addpeers return BigNumber Error
When I using ethconsole to deal with a private chain. I hope it can connects to another node which I get the node information.
But the command "web3.admin.addPeer("enode://[email protected]:30304",...
CommunityBot
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2
votes
1
answer
5k
views
message: 'invalid argument 0: json: cannot unmarshal hex string without 0x prefix into Go struct field SendTxArgs.value of type *hexutil.Big'
I am using a JSON RPC request and source code is as follows:
var options ={
url: "http://127.0.0.1:8545",
method: "POST",
headers: {"Content-Type":"...
CommunityBot
- 1
1
vote
1
answer
675
views
How do I start to write a function to debug Transaction?
I want to write a program that will do:
for the given txhash debug TraceTransaction and return that
What can i do in Go ?
Do you have any materials, a tutorial or can you give me tips on how to ...
CommunityBot
- 1
0
votes
0
answers
5
views
Problems in experience of blockchain splitwise
When I was running code of this splitwise code by using "npx hardhat run --network localhost web_app\script.js",but it answered back with the fault:"cannot find module abiDecoder",...
- 1
2
votes
1
answer
963
views
Invalid transaction signature on sending transaction
Hello guys I'm having a "Invalid transaction signature." error. Can't get pass this one. Am I missing something?
client, err := ethclient.Dial("path/to/geth.ipc")
if err != nil {
return err
}
ks :...
CommunityBot
- 1
2
votes
1
answer
4k
views
How does metamask manage the multiple transaction with same address?
I'm struggling to implement the functionality which sends multiple transactions using the same address. here the from address is same but the to addresses are different. When I did research on this, I ...
CommunityBot
- 1
0
votes
0
answers
23
views
ERC-20 Token Lookup
I am looking for an ERC-20 token with only the Name (Ticker), but when I search that up on Etherscan I come up with many many options.
Is there any way yo look these up by other criteria such as ...
0
votes
2
answers
60
views
Why is my transaction showing as 'success' but the value is 0 ETH ($0.00)?
I am new to the bitcoin world and any help would be appreciated.
Transaction hash: 0xfba22d3b6d047bbd81d25dd5d6ef3f070f57f79abeaeb4de49e7dc605ab4cb7c
If I was scammed, is there any way to recuperate ...
- 111
0
votes
1
answer
972
views
How to interact with mainnet smart contracts by GOlang?
Please tell me an example of code in GOlang that connects to the contract and checks the balance of the ERC20 token / transfer tokens / gets the name of the token. I looked for examples and did not ...
CommunityBot
- 1
1
vote
1
answer
446
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 ...
CommunityBot
- 1
4
votes
2
answers
624
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 ...
CommunityBot
- 1
1
vote
1
answer
41
views
Why I need an RPC URL to call a view function in Solidity
hello so my question is why I should need a RPC Url while calling a view function
Here is my simple code that is deployed in the localhost anvil testnet and that run successfully and there I did not ...
- 2,784
0
votes
1
answer
930
views
Tracking all ERC20 token transfers without using the event logs
I'm currently using the geth implementation. The problem is currently I am tracking erc20 token transfers using purely the erc20 contract event logs and filtering for Transfer event, then saving that ...
CommunityBot
- 1
0
votes
2
answers
945
views
geth attach issue between mac and windows
I am running geth on windows machine and try for geth attach in mac. I give
below error:
Fatal: Failed to start the JavaScript console: api modules: Post http://192.168.0.107:8545: context deadline ...
CommunityBot
- 1
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 ...
CommunityBot
- 1
0
votes
1
answer
436
views
Problem with eth.sendRawTransaction in geth console
Im trying to use the following code with nodejs to create a raw transaction:
const ethTx = require('ethereumjs-tx').Transaction;
const txParams = {
nonce: '0x0',
gasPrice: '0x3B9ACA00',
...
CommunityBot
- 1
0
votes
1
answer
59
views
how can we decode transaction data using rust?
As we all know, we can decode transaction data when a known method is called like this.
[...]
fn main() {
let input = "...
- 168
2
votes
2
answers
2k
views
Decoding ethereum leveldb keys and values
I've created a simple script to read ethereum data from the leveldb using C++. Basically this testing program would print all keys in leveldb to the console.
#include <cassert>
#include <...
CommunityBot
- 1
0
votes
1
answer
656
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 ...
CommunityBot
- 1
3
votes
1
answer
2k
views
Invalid address error
I keep getting Error: Invalid address when trying to run the application.
My current setup of web3 using infura node is
if (typeof web3 !== 'undefined') {
web3 = new Web3(web3.currentProvider);
} ...
CommunityBot
- 1
3
votes
1
answer
749
views
Pending transactions are not mined
Preconditions
I'm running a private network with Geth, having custom smart contracts deployed by Truffle and a simple frontend which using Metamask as a provider to connect the network.
Versions
...
CommunityBot
- 1
0
votes
1
answer
381
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 ...
CommunityBot
- 1
1
vote
2
answers
752
views
Is there any way to transfer ETH in a contract function just like transferFrom for ERC20 tokens?
I know that you can request an authorization and the transfer of ERC20 tokens from a contract user to another address with approval() and transferFrom().
But it here any equivalent to do the same for ...
CommunityBot
- 1
0
votes
2
answers
4k
views
What is the websocket URL in Ethereum on Geth?
I've lunched an Ethereum server based on Geth. Now, I need to be notified about all incoming transactions on my generated accounts.
In my previous Bitcoin Core server, I had an option in its config ...
CommunityBot
- 1
4
votes
3
answers
6k
views
Get full transaction list of an ethereum address using JSON-RPC
I'm currently developing a Java application which communicates with Geth using JSON-RPC.
I managed to implement something like @rustyx suggested on this thread using an HTTP connection, but it's too ...
CommunityBot
- 1
2
votes
2
answers
480
views
Transmit array as first parameter in web3.js
When I develop in solidity combined with web3.js, I face some problem recently. I create a contract code below
//setContractDetail(index,bool isConsentItem,uint8[] detailItems)
function ...
CommunityBot
- 1
3
votes
3
answers
15k
views
How to fetch ETH/USD price from the coinmarketcap api
I want to fetch the current ETH-USD price from this api (https://api.coinmarketcap.com/v1/ticker/ethereum/?convert=USD). How do I fetch just the price into a variable in PHP for reuse on my ...
- 1
0
votes
1
answer
395
views
ETH wallet issues
I use Coinomi wallet and everything was ok untill I tried to add my wallet to another system like MEW and Metamask
I use same recovery phrase but I end up with different account with no money there. ...
CommunityBot
- 1
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?
CommunityBot
- 1
0
votes
0
answers
15
views
I got scammed by Robot [duplicate]
There's APP called ETH MINER ROBOT. I withdraw 0.1ETH to my Binance Account and never received it.
- 1
0
votes
0
answers
11
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I got scam from one pretty girl she told me invest USDT up to 5k and earn daily profit, refer this website, "ogfvs.top" ETH-ERC_20 [duplicate]
I got scam from one pretty girl she told me invest USDT up to 5k and earn daily profit, refer this website, "ogfvs.top" ETH-ERC_20 by using this website, and i lost my USDT 4600 recently, ...
- 1
0
votes
0
answers
18
views
Private Node Network-GoEth
i am trying to install private network of three nodes on my single laptop.
i did following:
install go-eth.
used a medium article and followed instructions
when i try to connect nodes with each other,...
0
votes
1
answer
18
views
Can someone spend native Ethereum from a signer's address using just a signature?
I'm exploring Ethereum's cryptographic features and wondering if there’s a way for someone to use a signature to spend native Ethereum (ETH) from the signer's address without directly requiring the ...
- 5,811
1
vote
1
answer
681
views
Locally submitted transactions to the light node gets lost if the node is restarted
What happens to the transactions submitted to light node in the following scenarios?
1) Light node does not have a network connection with its peers.I could find that the transactions are submitted ...
CommunityBot
- 1
0
votes
2
answers
586
views
How to retrieve the logs of transactions on one contract and multiple addresses
I have an application which should work as an exchange. Customers have their own Ethereum addresses on my Geth server, and they might receive ERC20 Tokens on them. I need to fetch the incoming ...
CommunityBot
- 1
0
votes
0
answers
17
views
ETH tokens sent to BNB address in Safe Wallet
Some ETH tokens have been sent to a BNB safe address in Safe Wallet. To recover them I have followed this procedure: https://share.zight.com/z8uBKZYr.
The wallet owner of the Safe Wallet is: ...
- 1
1
vote
3
answers
1k
views
Bundle of Transactions
I have been studying some articles about MEVs on the Ethereum network and met FlashBots which provides security for MEV Bots
That is a bundle propagation service which receives bundles from searchers ...
1
vote
1
answer
765
views
How to query incoming transactions to an ethereum address via web3j?
i know this question has been asked many times in this forum, but none of them give clear cut answer to the questions. I tried the snippet mentioned in this answer: Common useful JavaScript snippets ...
CommunityBot
- 1
0
votes
1
answer
466
views
Some one make a fake token transfer from my friend wallet without having his PK
Now how is that possible? https://etherscan.io/address/0x781C2EA34506d904573E7E92be19154B729B2EE5#tokentxns
this guy send 65 ETH to an address but some scammers sent 65 ETH token(fake) with his ...
- 1,383
0
votes
0
answers
32
views
How works auto crypto assets stolen web pages
In my dissertation, I learned about the tactics of Ethereum scammers and I wanted to know how crypto sites automatically detect "cryptopank", "bored monkey", coins, etc., and ...
1
vote
1
answer
571
views
Fatal: Error starting protocol stack: listen tcp 127.0.0.1:8545: bind: Only one usage of each socket address (protocol/network address/port)
I have this error when i try tu run my second node on Geth...I used authrpc.port but still the problem persists:
I ran my node1 with these commands:
geth --datadir node1 --networkid 2244 --allow-...
CommunityBot
- 1
0
votes
2
answers
323
views
How to get raw transaction from v, r, s signature
My question is what would convert transaction fields r, s, v to rawTransaction. Can I see a transaction in the mempool and get its signature and raw?
here is an example vrs:
raw = ...
- 61
0
votes
0
answers
13
views
I exchanged scam tokens,pls help me [duplicate]
I exchanged ETH for scam coins through BYBITWEB3 on UNISWAP, now they cannot be sold on BYBITWEB3 DEFI (he writes that the contract has closed source code) and when trying to reverse exchange through ...
0
votes
0
answers
7
views
If two persons split the minting process payment 80-20% on opensea , what are the rights and risks of each one on NFT?
I am new to NFT minting.
I created a collection and am about to create a NFT .
Someone has a buying customer on opensea for my Artwork to be minted. He suggests to pay 20% of the minting fees while I ...
- 1
0
votes
1
answer
278
views
Sending bribes to block validators
I've got a question regarding bribes. Is it possible to send a bribe without using block builders' RPCs like rpc.titanbuilder.com? I would like to send a transaction using my own node and land it at ...
- 11
0
votes
1
answer
43
views
Failing while trying to deploy ETH SAFE on BASE. What am I missing?
I tried following the steps outlined here:
https://help.safe.global/en/articles/40812-i-sent-assets-to-a-safe-address-on-the-wrong-network-any-chance-to-recover
https://share.zight.com/z8uBKZYr
This ...
- 1,168