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.

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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 ...
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4answers
955 views

How to implement a watching wallet for thousands/millions of addresses

I need to check for customers' deposits and need to scan for receiving transactions for those addresses for Ether and in next step ERC-20 tokens. What's the most efficient way to do this with go-...
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Can I add my own fields to JSON files in the keystore directory?

I need to add a few fields to JSON v3 wallet file, can I do it ? What is Ethereum's policy on this? For example, to add account name I would do something like this: { "address": "...
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1answer
43 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 ...
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0answers
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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 ...
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2answers
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What exactly web3.eth.accounts.create do

When web3.eth.accounts.create is used to create an account something like this can be seen. web3.eth.accounts.create(); > { address: "0xb8CE9ab6943e0eCED004cDe8e3bBed6568B2Fa01", ...
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5answers
7k views

How to transfer the whole balance of an account?

If I have an account with 5 ETH, can I send the full account balance of 5ETH to another account and have exactly 5ETH received on the second account ? I understood that it will fail because I have no ...
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1answer
74 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 ...
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2answers
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What is nonce in Ethereum? How does it prevent double spending?

recently I got fascinated by blockchain, and started learning Ethereum. I came across the concept of the nonce in Ethereum. After researching I found out that nonce is used for two purposes. a. To ...
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1answer
51 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 ...
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1answer
43 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 ...
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1answer
335 views

how to import UTC-JSON file through web3-eth methods

hey I am working on ethereum wallet. in this i want to import my account through UTC json file, but i didn't find any solution for this in web3-eth command someone can please help to find out the ...
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4answers
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Unlocking accounts and making transactions in web3.js

This question is related to this one and this one. It also has a partial answer here and here. In the third link the account is being unlocked for a period of time using web3.js: web3.personal....
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1answer
202 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){ ...
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1answer
70 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 ...
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0answers
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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....
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1answer
558 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?
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1answer
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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 ...
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4answers
12k views

How can I detect change in account in Metamask?

When a user changes to a different account in metamask, is there a way to detect it asynchronously in code? I currently use this.web3.eth.getAccounts((err, accs) => { this.account = accs[0]...
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3answers
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Are there other Vanity Address generators available?

Are there any Ethereum vanity address generators available other than: Vanityreum (python) Vanieth (go) Which is the fastest? Can they be optimized further? What is the use-case of vanity ...
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0answers
587 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 ...
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1answer
639 views

Web application for remote users to create Ethereum account

Say that a machine is running an Ethereum client (geth or Parity), and it also has a web application (running as a NodeJS server, say) that provides a front-end to users and communicates with the ...
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1answer
58 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 ...
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1answer
100 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 > ...
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1answer
19 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 ...
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1answer
312 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?
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5answers
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How are ethereum addresses generated?

What criteria does a valid Ethereum address need to fulfill? Is it just a random number in hexadecimal? Or does it need to be derived in a specific way, according to some cryptographic algorithms? ...
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1answer
58 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 ...
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1answer
2k views

Truffle test: How to test Ether transfer? Balance of specific account?

How is it possible to test if my contract actually transfers money to a specific account? function _transfer(address receiver_, uint256 payout) internal{ receiver_.transfer(payout); } Testing in ...
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2answers
3k views

Get Private and Public Key from BIP44 Master Private Key

I am confused about getting the private key corresponding to the address for derivation path m/44'/60'/0'/0'/0' Question 1: Is the following code correct in getting the address and private key? Why ...
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2answers
6k views

Can I use the same private key for Ethereum and Bitcoin?

Both Bitcoin and Ethereum private keys are usually a 256-bit number, isn't it possible to use the same private key for both Bitcoin wallets and Ethereum accounts? For instance, the Bitcoin wiki states:...
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1answer
44 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 ...
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2answers
13k views

In the truffle console, how to set and get current account?

I'm using the $ truffle console. I can see my available accounts using truffle(development)> web3.eth.accounts. But when I run some smart contract code, which account is running the contract? ...
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3answers
8k views

How to validate a private key?

I could not find any library that, given an hex value, returns true if the given string is a valid ether private key. Any hints?
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0answers
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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 ...
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0answers
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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 ...
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2answers
495 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 ...
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2answers
12k views

How do I remove accounts using the Geth console?

I have several accounts I've created in the Geth console using: personal.newAccount() I no longer use (nor have any intention of using) the first couple of accounts I created, meaning whenever I ...
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1answer
72 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.
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2answers
418 views

How can I synchronize account between geth servers?

I have setup geth in 2 servers as a private testing Etheruem environment. In the 1st server, I have created accounts. For the 2nd server, I would like to build as a node to attach the 1st server. ...
3
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1answer
752 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 ...
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1answer
1k 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 ...
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1answer
75 views

Generate Public Key

I use the command: > eth.getTransaction("0xac844bd1107761fec3abe2f55bf739f0e7cc6dd1cd169a60176bfb22 9826b5a8") Where the brackets contain the hash of the successful transaction. This is what I ...
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3answers
395 views

Getting Addresses using a Path causes the error: Could not derive hardened child key

I am using ethereumjs-wallet npm package to generate a unique wallet address for each user. However instead of using the mnemonic/seed, a public extended key xpub will be used instead to keep the ...
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1answer
2k views

How to get the balance of a contract using web3.js?

I have deployed a contract as follows and determined its balance to be 5000 wei (value: 5000): const thisContract = new web3.eth.Contract(abi); thisContract.deploy({ data: bytecode, ...
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1answer
43 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 ...
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1answer
217 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 ...
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3answers
23k views

How to explore all transactions for a given account?

After beeing able to check account balances, I am looking for a method to list all transactions for a given Ethereum account through json-rpc protocol. I haven't found any method suitable for that on ...
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2answers
2k views

How to preallocate multiple accounts with ether for geth --dev chain?

I'm trying to set up a private chain with geth using --dev that has several accounts with lots of ether. It seems unclear if this is possible anymore according to this. Here's what I tried on geth 1....
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3answers
12k views

Difference between Ganache and Truffle

What is the difference between this two? I understand that Ganache is like a fake blockchain, but Truffle has that too ? What are the limitations of each and under which circumstance we use either ...

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