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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Link a profile page to an ethereum address?

If I have made a page with meteor where a user can login and see his own personal profile page, is it then possible to link that profile page to an ethereum address, so the user can update his profile ...
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1answer
833 views

creating wallets for my websites users

I am developing an app that uses Ethereum as its payment method, and in the app, users will have their own balances. But there is a slight problem and it has to do with fees. If a user deposits ...
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2answers
685 views

How to unlock all accounts or unlock an account forever under parity?

I want to use an account to make some transactions at the same time. So I need to unlock this account each time when I send transaction. But because it sends at the same time, it may happens that only ...
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1answer
1k views

How to send from multiple accounts to the one account in the contract

For example, I have 3 accounts with balances: 1 account - 5 ether 2 account - 15 ether 3 account - 7 ether I want to send 20 ether, so it will be used 1 and 2 account. I understand, how to make ...
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9k 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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1answer
838 views

Help, I created an unencrypted myetherwallet private key

newbie here. Have opened a myetherwallet wallet to view tokens only. Unfortunately, the steps I chose landed my with an unencrypted private key! Am I in trouble? How can I get myself hidden and ...
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1answer
972 views

Why does mist block importing accounts when a geth node is already running?

I have run into this issue. The cause is described in that thread, but not explained. If I run mist and let it launch its own node, then the Accounts>Import menu item is available. If I run geth ...
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1answer
202 views

Ethereum Miner validation

I have created a private block chain with three Peers. Peer A is having an account which is having 20 ether. Now I am trying send 21 ether from peer A's account to peer B's Account. It is not throwing ...
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1answer
86 views

Use accounts as datastore

I am rather new to Ethereum and I wonder if the following scenario is possible. I want/need to store some data encoded as a JWT in the blockchain and have it (publicly) accessible via an ID. Only the "...
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1answer
70 views

Does a node only contain a coinbase?

As I know, coinbase is the default account that stores ether when mining. Does a node only contain a coinbase? If there are many different users who have many accounts in one node, will there be many ...
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How to create an account in a Dapp which developed with Parity

I’m developing a Dapp about image storing with Parity these days. And I try to make a new account with JSONRPC right now. But when I searched for some useful API, I found an API in this web:...
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1answer
1k views

Is it possible to hack an ethereum account? [duplicate]

I want to know if is it possible to hack an Ethereum account?
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641 views

Account “lost” after using --datadir in Geth

I am extremely new to Ethereum, just started mining a bit 2 days ago. I use Windows 10 and a GeForce GTX 950 card. I have had geth running smoothly for about 2 days, then it started filling up my ...
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392 views

Can I make a transaction that sends funds directly to the address an ENS domain resolves to?

For example, firefly.eth currently resolves to 0xce31f0ad68d9565004bbe351a8677eb74c86866d Without my software knowing or looking up the specific address "0xce31f0ad68d9565004bbe351a8677eb74c86866d" ...
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145 views

Encrypted accounts backup and restore from 12 word seed

In my wallet I used ethereumjs-accounts library to generate and manage accounts. It allows to export and import accounts by json string or zip file. My goal is to add to export/import functionality 12-...
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1answer
289 views

How to get UTXO set using JSON API?

My blockchain development background is in Bitcoin, but it now seems to me that the most dynamic and interesting blockchain platform is Ethereum. In my quest to grok the Ethereum protocol I'm ...
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915 views

How to display old account from UTC file?

I restored old UTC key file from another computer: UTC--2016-07-27T13-36-55.890168500Z--89f8704b0fdaabbb51c128c7fd9664ef218e1795 and added it into keystore folder. I also created fresh account with ...
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322 views

where is the file that references accounts in the geth client

There must be a .dat file or something that stores the accounts in the geth client, where is this file located? As an aside, are Externally Owned Accounts (EOAs) and Contract Accounts actually ...
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Tech challenges related to coinbase account recovery

I am trying to reacquire access to a coinbase account that I used as the repository for ethereum I was mining almost 2 years ago. I have the json file corresponding to the correct address. I have ...
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1answer
868 views

Are there invalid private keys?

Private keys of Ethereum accounts are usually represented as 64-character hex strings. Will any such string work as a private key? Are there limitations on what the key could be? If not, I can just ...
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3k views

Is it possible in theory to generate the private key for the 0x0000000000000000000000000000000000000000 wallet?

Is there any chance, although extremely low, to generate the private key for the 0x0000000000000000000000000000000000000000 wallet? Does the system allow it at all?
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How to import a plain private key into Parity?

Basically the parity version of this. Can Parity import raw private keys or Geth keystore files?
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3answers
2k views

What is the purpose of Testnet?

I'm just getting into cryptocurrencies so forgive me if there are some basics I am missing out on. I have got a bitcoin account up and running and will soon be buying a few just to test things out, ...
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1answer
1k views

Changing install directory? [duplicate]

My Windows drive is almost full. As I actually have two drives, I want to move the blockchain from the default location to the second drive. How can I do it?
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1answer
140 views

Two wallets running on same keystore file?

I created a wallet @ myetherwallet. I received some ethers here and it worked fine. But I didn´t understand where the ethers were at first, so I openend another wallet locally on my mac: ethereum ...
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1answer
4k views

Ethereum wallet on two devices?

I have a few problems, and I am not sure how to solve them. I transferred ethereum from Coinbase to a wallet that I originally created on a Mac. The initial sync was not yet complete, and it is ...
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2answers
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How to import an account in parity using CLI?

Here is what I tried: parity account new --chain dev it creates new account and generates JSON file in %HOME%\AppData\Roaming\Parity\Ethereum\keys\DevelopmentChain\ So, then I cut the file from ...
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556 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
360 views

Create new Ethereum accounts and store them in the node using JSON-RPC

I want to develop a website where each registered user can generate new Ethereum address, send their coins and later exchange them into other coins. I want to implement the following functionalities: ...
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3answers
3k views

How does a contract find out if another address is a contract?

Is it possible, from within a contract written in Solidity, to check if a contract is placed on a specific address or if this address does not contain any code?
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1answer
322 views

Did I actually just win 1 Ethereum? Is it truly mine?

I was looking for coins to mine & exchange for bitcoins when I found out about Ethereum. I have literally no knowledge about it or anything at all. I went for a site (https://freeeth.me/) to win ...
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1answer
50 views

UTXO Output greater than Input

I reviewed the transactions from a recent ICO. The account below provided the largest investment. If you check the account, there is a far greater Out value than In. I was under the impression ...
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1answer
783 views

Parity account addresses all having prefix 0x00

After creating multiple new accounts with the Parity wallet (v1.6.6), I notice they all have the address prefix 0x00 (the 0x part being the obvious hexadecimal prefix), for example ...
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1answer
1k views

Parity – unlock multiple accounts at startup

I unlock an account on parity startup using the following arguments: parity --unlock $COINBASE \ --password $CONFIG_DIR/password \ ... How can I unlock multiple accounts at startup?
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Can't send transaction using NODE-RED platform - “Warning! Error encountered during contract execution [Bad instruction]”

I'm trying to use NODE-RED (https://nodered.org/) on my RPi using web3 and geth to send simple transactions. The code is the following: //variables var Web3 = global.get('web3'); var upc_abi = //...
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2answers
3k views

isContract function using EVM assembly to get the address' code size

My problem is that I need to make sure my contract processes only the transactions coming from EOA (externally owned accounts). For this I need to determine the type of account I'm dealing with. In ...
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0answers
417 views

How to create an ethereum accounts for my own token using node js web3

I have created my own token and now I want to create accounts for clients where they stock tokens using node js express.But I have no idea how to generate accounts' address ! Can anyone help me please ...
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3answers
15k views

Get public key of any ethereum account

Can I somehow get the public key of an ethereum account knowing just the corresponding ethereum address (e.g. 0x54dbb737eac5007103e729e9ab7ce64a6850a310)?
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1answer
310 views

Presale wallet gives zero funds

I have already asked this question but I post once again as helpdesk people at ethereum are asking to post here: After several years of waiting, I have decided to check how much ether I do have in my ...
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1answer
91 views

Why is my account still locked if I try to send a transaction?

I unlocked my account and get result true but if I try to send: var transactionHash = await contractname.SendTransactionAsync(contractAddress, new HexBigInteger(calculatedGas.HexValue), new ...
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1answer
68 views

Is it possible for an account to have only a single transaction, and for that transaction to be outgoing?

This account (https://etherscan.io/address/0xffffad56580f616152cbb8ac362ccf49d4abc886) confuses me. How is it possible for an account to have a single outgoing transaction with no incoming ...
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0answers
94 views

Is it possible to stack transactions?

Is it possible to stack transactions which depend from themselves? Example: State on start: Account A (2 ETH), Account B (0 ETH), Account C (0 ETH) Transaction 1 - Account A sends 2 ETH to Account ...
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1answer
968 views

Geth not synchronizing to MetaMask

I want to import my account of MetaMask(testnet) to the geth accounts list. First I copied the private key from MetaMask and saved to a txt file. After that I run this command : geth account ...
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1answer
277 views

Retrieve Account Name Using Web3

After creating an account (i.e. lets say using Mist) we can update the account name from the Mist interface by editing it. Is there a way that we can fetch that account name by providing the account ...
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1answer
477 views

How to setup the account manager type to sign transactions in Go?

TL;DR: I've setup a private Ethereum node, and I want to send a signed transaction to it. By reading the docs I know that there's an account Manager type which can access a Wallet type which has a ...
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1answer
428 views

DAPP - Account Unlocking Concept

As of now whenever I try to perform any operation by invoking any of the methods of a contract it expects to unlock the account. Now the account which is used to perform the transaction, has to pay ...
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0answers
67 views

invalid character 'personal_signAndSendTransaction' after top-level value

I am getting this error when I try to sign in to one of my accounts using Mist. If I try to unlock the account using the console I get this error: invalid character 'g' after top-level value
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1answer
492 views

Is there any way to create an ethereum account from RSA key?

I have my very private RSA key: -----BEGIN PRIVATE KEY----- MIIJQQIBADANBgkqhkiG9w0BAQEFAASCCSswggknAgEAAoICAQDI0vCkxjyJQ7b7 MVJKKXVTFSH3yN5xWozV1pZ8grTTr6dL90bmeCHIw9PnsZRJWsAhstnSnLm1v7KE kkNqFi2s+...
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2answers
329 views

Sending an event to a particular user account

I am trying to send a notification to a user on some activity. I tried to use events but when an event is triggered, it goes to all the user accounts that are currently active on the network. Is there ...
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1answer
340 views

Create new account over IPC

I want to create a new account over IPC so I have started private chain with the below command geth --networkid=5 --datadir DataDir --ipcapi "db,eth,net,web3,personal" --ipcpath "/Users/smartSense/....