Questions tagged [accounts]
Ethereum has two types of accounts: externally owned user accounts, controlled by private keys, and contract accounts, controlled by their contract code.
462
questions
0
votes
1answer
50 views
web3.eth.accounts[0] undefined
I am new and I am trying to make my first transaction using geth and truffle.
to specify a sender address I type in the truffle console:
src = web3.eth.accounts[0]
but I get "undefined"
if I ...
0
votes
0answers
11 views
trying to send some tokens from unlocked account
So I'm trying to send some tokens from an, with ganache-cli unlocked, address to mine to try something out, however for my code to work I need some starting amount of the initial token. Is there some ...
0
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0answers
44 views
How can I create an ethereum wallet which can show many addresses balance?
I'm looking for a wallet which can scan many ethereum addresses balance,(like electrum for bitcoin).
I need to import 200 (or more) eth addresses and scan their balances include their tokens(if funded)...
0
votes
1answer
17 views
Truffle Console: How to print Ether values for the accounts?
I am trying to follow a tutorial available at:
medium Just Dev
> getBalance = web3.eth.getBalance
> balanceInEth = address => web3.fromWei(getBalance(address).toString())
I got errors so I ...
1
vote
1answer
41 views
How to synchronise accounts between different geth installations
I have a problem. If I build two geth nodes A and B, these two nodes are already in communication and synchronization. I created accountA on node A, and I can unlock accountA on node A with the ...
3
votes
0answers
48 views
What happens in the account state when we pre-send ethers to a smart contract?
I'm asking this question in relation to this one : pre_sending Ether where the OP asked in a comment of the answer about what happens at the low-level when pre-sending ethers to a smart contract.
As ...
1
vote
1answer
51 views
Deploy from Remix to Quorum using password? “authentication needed: password or unlock”
I can SSH into the box that is running Quorum:
run geth with the flag --allow-insecure-unlock
geth attach new-node-1/geth.ipc
personal.unlockAccount(eth.accounts[0])
I'm interested in knowing if I ...
0
votes
1answer
25 views
How do i change Truffle default account after contract deployment to interact with it?
I work with Truffle and Ganache along side Windows Powershell. Here, Truffle's default account is account[0]. I deploy my contract with that. After a while, i need to interact with the contract with ...
0
votes
1answer
89 views
ReferenceError: accounts is not defined
I was using "truffle test" for testing with JS. gives this error.
here is the code of that part.
it('transfer success', function(){
return Eve.deployed().then(function(instance){
...
1
vote
1answer
35 views
Can queue of pending transactions will be confirmed if send last transaction with high gas price?
I have several pending transactions from the same account with a low gas price. What if I send one more transaction with next nonce but high gas price? Can it help to mine all pending transactions ...
0
votes
1answer
46 views
Import accounts on Ethereum Wallet is disabled
The Import accounts option in File is disabled.
I am using the Ethereum-Wallet-linux64-0-11-1, latest version (now).
After I reinstalled the OS, I tried to import some accounts.
I copied the accounts ...
0
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0answers
108 views
Served eth_sendTransaction err=“unknown account”
I'm facing issue with private chain, when I run the node, it shows the logs as below, and transaction went in pending status.
Folder structure
All the wallet file reside into keystore folder.
Node....
0
votes
1answer
82 views
Solidity-how to transfer ether from an account to a smart contract as deposit
I just started to learn Solidity. In the SimpleAution contract, there are two functions, bid() and withdraw(), the former iniating a bid, transfering some ethers to the contract as deposit, the later ...
0
votes
1answer
257 views
Is there a way to retrieve private key of ganache account with web3?
web3.eth.getAccounts() returns list of accounts.
Is there a way around to get the private key of one of the account from the list returned from the above code?
0
votes
1answer
38 views
Reproducing a Ganache Server across multiple computers
There are multiple developers on the team and it seems as though we all want to be working on a specific test network with specific public and private keys with a specific number of users who all have ...
0
votes
1answer
44 views
problem with sending ethers on ropsten network
I am trying to send ethers from one address to another address on the ropsten network but I get the message "undefined".
Here is my code:
web3.eth.getTransactionCount(account1, (error, ...
0
votes
0answers
374 views
Is it required to use multiple Etherem accounts to send transactions on behalf of customers to avoid pending transactions?
We are developing an Ethereum based exchange. In our project, customers put their orders to send ETH or ERC20 tokens to others, and we currently do these transactions via our Ethereum account on their ...
1
vote
1answer
114 views
The send transactions “from” field must be defined using Infura web3
when I try to send my transaction using infura I get this error
"The send transactions "from" field must be defined"
My problem is my web3 object. When I used Metamask and ...
0
votes
1answer
35 views
It is secure do accounts just with web3.eth.accounts.create() ? (entropy)
const Web3 = require('web3');
let url = 'infuralink';
let web3 = new Web3(url);
console.log(web3.eth.accounts.create());
This is the code of many tutorials for do a key pair.
it is completely secure ...
0
votes
1answer
67 views
Truffle Console: “undefined” message varaiable declaration
I am giving following commands at Truffle console but I am getting "undefined" message:
> $ truffle console
>
> You can improve web3's peformance when running Node.js versions older
> ...
0
votes
1answer
17 views
Was the function called before from a specific address?
Consider a function definition as below -
function checkForUpvote() external returns(bool){
Here I would first like to check, if the external account invoking this function
: has invoked this ...
0
votes
1answer
154 views
Ethereum transaction with multi input and multi output like bitcoin
What happens to my wallet when I only 1000 accounts with 0.0001 ether and the tx-fee is about the same, I can't spend anything anymore?
0
votes
3answers
302 views
Unknown Accounts suddenly appearing in MetaMask wallet…?
My MetaMask wallet has multiple accounts which I did not create. I have no idea how they there.
Is my MetaMask wallet compromised? Or is this normal that MetaMask creates new wallet addresses when ...
0
votes
1answer
42 views
web3 does not find metamask accounts
I have a very strange bug in the code. When loading a page with a code, the current account in metamask should be determined. but this only happens on one local domain. in other domaines accounts are ...
0
votes
1answer
42 views
Can an Ethereum account be used by several users at the same time?
I am developing a DApp for donations (the donations are not in cryptocurrencies). I want the donor to make donations without registering on the platform. In fact, I don't need to know who he is. So it ...
1
vote
0answers
37 views
How to interact with Remix contract through web3py
I have an assignment for which I must write a client that can interact with a deployed contract by transacting and filtering event logs, but I cannot figure out how to successfully get either to work ...
0
votes
1answer
36 views
How to sign transactions while Geth does not provide private key?
I've lunched Geth for the first time and created some accounts on it. While creating accounts, I entered a password for each, and a key file is generated which contains encrypted private key belonging ...
0
votes
1answer
25 views
My cutom RPC meta mask created account is not showing in terminal
I have installed geth and created genesis.json and run my own private eth network. I started my rpc using
geth --rpc --rpcport 5200 --rpcaddr 192.168.1.99 --datadir ./private
Then I connected to ...
0
votes
0answers
20 views
How is the storage trie of a user account which does not belong to any contract?
We know that storage trie (stored in the leaf node of state trie) is storing the contract's data related to an account. Then, what will be stored in the storage trie of a user account which does not ...
1
vote
0answers
30 views
keystore path in geth command does not work
I've lunched Geth server and want to store data and keystores in a non-default directory. I've used this command to run Geth:
geth --datadir /etc/dir/ --keystore /etc/dir/keystore/
But when I run ...
0
votes
2answers
342 views
How Ethereum supports in dealing with double spending problems
Let's us consider a scenario where I am using my ethereum wallet for creating a transaction request (where my account balance is 100 eth and I am doing a transaction of 50 eth to someone from one ...
1
vote
1answer
56 views
Difference between web3.eth.personal.getAccounts() with web3.eth.getAccounts()
What are the differences between web3.eth.personal.getAccounts() and web3.eth.getAccounts()?
environment
truffle: v5.1.7
using truffle console.
2
votes
1answer
272 views
Generating multiple deposite address for one account
I want to create something like a Crypto exchange, in which I need to generate different unique deposit addresses for each user, so they can send funds to their accounts while I can keep track of how ...
0
votes
0answers
34 views
Golang list unlocked accounts from node
Wondering how would I access an unlocked account on the node (private geth) in golang. The flow I'm looking for is:
1. user unlocks their account (using personal.unlockAccount for example)
2. my app ...
2
votes
1answer
417 views
Execute transaction Approve directly against contract address (without ABI)
Solved
For now, you will always need the ABI to execute a call against the ethereum network with web3. A simple way is to reconstruct the function you wish to execute is to, either create a separate ...
0
votes
3answers
132 views
Can an NFT (e.g. ERC721) simultaneously belong to two different entities, say an user Owner, as well as a user Custodian?
For example, on the blockchain say you own a ERC721 Car token at your wallet address, but you want to park it in the ERC998ERC721 top down composable Garage owned by your friend, while still retaining ...
1
vote
2answers
2k views
Reinstalled MetaMask, account lost?
I had 3 accounts under my MetaMask Chrome extension. One of them had some small deposit. I have reinstalled the extension and used seed phrase to get access again. However, I can see only one account (...
1
vote
1answer
148 views
private key vs seed
I made an extra account in Metamask for my GF, I kept Account 1 for myself and I gave only the private key of Account 2 to my GF. I kept the seed words only to myself.
Since then, she has dumped me ...
0
votes
0answers
489 views
Unable to Unlock Account Even After specifying allow-insecure-unlock
Software: Ubuntu on VirtualBox
Update, tried putting two dashes, on allow-insecure-unlock, doesn't work
solidity@solidity:~$ geth attach http://127.0.0.1:8545 --allow-insecure-unlock
Incorrect Usage:...
0
votes
1answer
162 views
Unlock Ethereum account via infura
I am trying to connect my wallet (Metamask) via Infura, but I receiving an error.
My code:
[HttpPost]
public async Task<IActionResult> LoginAsync([ModelBinder(typeof(AccountBinder))] ...
0
votes
0answers
38 views
getAccounts undefined recently
I've been using web3 v 0.20 and I recently noticed that getting accounts from
web3.eth.getAccounts(function(error, accounts) {
returns undefined.
Is Metamask 7.2.1 forcing it to be undefined for ...
2
votes
2answers
2k views
How to check Ethereum smart contract info?
I want to know 3 things:
Is an address a smart contract?
Is this smart contract an ERC20 or ERC721 token?
Is the Solidity code public?
0
votes
0answers
19 views
Which one is more secure and easier to mange among eth.accounts.create, personal.newAccount & eth.accounts.wallet.add
Here are what I knew about them:
eth.accounts.create: Generate an address and private key for transaction but did not stored in anywhere.
personal.newAccount: Create an account under node, so that ...
0
votes
1answer
106 views
Geth + Web3 | web3.eth.getAccounts() returns undefined
I have follow this SO answer for sending ERC20 tokens from 1 address to another. I am running into an issue where I am receiving an error that my from address is invalid
Error: Error: ...
1
vote
1answer
33 views
How to call a function with params and check them
I want to create a smart contract that users can send a number to and receive an amount of ether.
function airdrop(uint val) public payable {
require(airdrop == true);
if (val == 0x31){
...
2
votes
3answers
567 views
How smart contract transactions work?
I read that smart contracts donāt have a private key, so they canāt sign a transaction. My question is: when a smart contract starts a transaction to an EOA, how are we sure that the smart contract ...
1
vote
3answers
2k views
Alternatives to Metamask
What are existing alternatives to metamask with that works online inside existing browsers, that don't require installing a browser extension? What are some of the tradeoffs between them?
1
vote
1answer
234 views
Both web3.eth.accounts.create() and web3.eth.personal.newAccount() not working
I'm making a dApp on reactjs. I wanted to create a new account and have done it trying 2 methods
this.web3.eth.personal.newAccount()
this.web3.eth.accounts.create()
I have attached the code below(...
3
votes
1answer
177 views
Multiple Accounts on a single node?
I am a beginner and learning Ethereum. Can somebody please tell me if my understanding is correct?
Q) There could be just 1 node running, but multiple accounts?
0
votes
1answer
39 views
Where is storaged the publickey for any account?
I have been reading the Ethereum Yellow paperthat for any account there are four parameters:
nonce
balance
storageRoot
codeHash
A transaction is signed using three parameters: r,s,v
According to ...
