Questions tagged [myetherwallet]

MyEtherWallet.com is an open-source web wallet which allows users to generate wallets, import pre-sale wallet files, and move funds.

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16
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2answers
24k views

What is the difference between an exchange like Coinbase and a wallet like Jaxx, MEW, MetaMask?

What is the difference between storing ether with an exchange (e.g. Coinbase, Kraken, Gemini, Poloniex, Bittrex) and a wallet like Jaxx, MEW, MetaMask?
14
votes
1answer
3k views

Issue with "Generating Transaction" with MEW offline

I would like to try to send offline with MEW. I'm using a pc with Window 7, no sp1, never been connected. I have tried with Firefox and Chrome. Been cleaning cache, rebooting. Nothing happens when I ...
14
votes
2answers
16k views

Does metamask store private key on server or anywhere else?

I have created my private key using myetherwallet using offline option. Now Metamask allows us to import account by providing private key or Json File that has private key. Does metamask store ...
13
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1answer
13k views

Solidity: private vs public variables

In a smart contract, if we make a member variable public: Question 1: Can a malicious party write a transaction/contract and change the value/state of the public variable in the contract? Question 2:...
13
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2answers
15k views

What happens if MyEtherWallet will go offline?

I created a wallet on myEtherWallet. Let's assume that in the future this website doesn't exist anymore. Is there any way to access my ether? Or will they be gone in the blockchain?
11
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2answers
9k views

How do I change the owner of an ENS domain using MyEtherWallet?

Does anyone know the exact procedure for doing this? It looks quite straightforward, but I'm unwilling to try it out without confirmation from someone who's done it already.
11
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2answers
4k views

How to connect etherwallet to my private blockchain?

I am unable to make etherwallet v3.4.2 to connect to my private blockchain. The way I run my private network: (please note that it works perfectly fine) geth --port 3000 --networkid 23422 --identity ...
10
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4answers
25k views

Is there a simple Ethereum address generator that consists only of private key and public key?

I can go to https://www.bitaddress.org/ , download their software to my system, disconnect my system from the Internet, then move my mouse over their page randomly to generate entropy and then get a ...
9
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4answers
6k views

Passing constructor arguments while deploying contract from byte code

I am trying to deploy a contract via MyEtherWallet from byte code generated by browser-solidity. I unlocked my wallet using private key,but I didn't find any way of passing parameters to contract's ...
9
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3answers
13k views

How to generate paper wallet on myetherwallet.com?

I need your help! I would like to generate a paper wallet (cold storage) for my Ether. I followed instructions in order to do so: went on myetherwallet.com Input password Clicked on Generate wallet ...
8
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2answers
2k views

Lost Ethers in Google ad phishing scam

I am currently looking at my ethereum wallet and it shows that a transaction happened overnight and wiped my whole balance. I was trying to transfer some funds from my cold wallet. I went on www dot ...
8
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2answers
7k views

Why does my smart contract tokens not show up in MyEtherWallet or MetaMask?

I have deployed a very basic smart contract to the Rinkeby test network. The contract's address is 0xb145b6d8757b40ac80b5fe2a98ab6c8450a54585. I have made transactions to it using MetaMask, and they ...
8
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4answers
9k views

Error: Error: [ethjs-rpc] rpc error with payload {"id":6223335088050,"jsonrpc":"2.0","params":

I have deployed a smart contract in Remix IDE using MetaMask and test rpc. I got the below error: Error: Error: [ethjs-rpc] rpc error with payload {"id":6223335088050,"jsonrpc":"2.0","params":["...
7
votes
3answers
4k views

Are there Ethereum Wallets (other that Mist) that provide support for test-network

I was going through a list of Ethereum wallets from here and here. Some good or I should say popular ones other than Mist were Jaxx and MyEtherWallet. But I was concerned if any Ethereum wallet ...
7
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4answers
26k views

How to view custom token balance in ether wallet using web3

Hello I am newbie to cryptocurrency. I have created my erc20 custom token. Now, I want to create an API to view the balance(in my token as well as in ethers) using web3 and node js.Can someone please ...
7
votes
1answer
609 views

Is it possible to tell whether an address is mist, mew or parity?

How can I tell if an address is from Mist, MyEthereumWallet or Parity? Is there anyway to know? Are they encoded differently?
7
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2answers
4k views

Login system for DAPP without metamask

I'm building Dapp on Ethereum. Imagine I have companies to register in my dapp, I will provide them with their own smart contract and public and private key pair, which they will use to just unlock ...
6
votes
2answers
736 views

How does the ethereum network validate addresses that were created offline?

Myetherwallet.com allows us to create private/public keys offline, so the network doesn't know anything about it. When someone sends ether to this address that was created offline how does the network ...
6
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2answers
10k views

Is it common practice to have multiple wallets?

Is it common practice to store your Ether in multiple wallets? For example, generating 10 wallets on myetherwallet.com and distributing your Ether among them? What are the practical reasons for ...
5
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2answers
8k views

Create ether wallet account using node js and web3

Hello I want to create a ether wallet account using node js and web3. Can anyone please help me in this regard. Thanks in advance!
5
votes
1answer
4k views

How to find the contract wallet JSON and ABI

I'm trying to find the JSON and ABI for one of my contract wallets here: 0x1Fa0926C69eEe89d212F0848803e4Ee2E548fE4D The reason is that there is some ETC locked up in it that I'm trying to dump, ...
5
votes
1answer
767 views

Saving ether from a corrupt ether wallet

I have just recently opened a MyEtherWallet but I am having trouble. Can the wallets be corrupted? Is the ether lost or can it be saved? I have successfully been able to send ether to the wallet ...
5
votes
2answers
6k views

How to transfer DAO from MyEtherWallet to Kraken? (DAOs transfer method)

Related: Transfer DAO's from Myetherwallet to Kraken How to withdraw Ether from The DAO? MyEtherWallet screenshot: The balance is low because all Ether was invested in DAO. Here is the Kraken ...
5
votes
1answer
3k views

Ensuring a transaction is included in a specific block

I have been sending myself transactions back and forward between MEW and Parity trying to get a transaction included in a specific block number however I seem to be always 3 - 6 blocks behind where I ...
5
votes
1answer
3k views

How to get the bytecode of a transaction using the solidity-browser?

I want to get the bytecode to put in the "MyEtherWallet/Send-Ether" when I want to make some transaction, sending some ether to some contract, to call some function in the contract. I need to use the "...
5
votes
1answer
761 views

MyEtherWallet shows custom token but etherscan does not show any transaction?

Yesterday I participated in an ICO. I sent ETH to the correct contract adress and my transaction was confirmed. I also found my transaction on the ICO contract adress via etherscan. I then added a ...
5
votes
1answer
1k views

ERC223 tokenFallback function doesn`t work

I try use ERC223 token and I want understand how is it work. I use recommended realization of this standard Dexaran This is code of ERC223 token. pragma solidity ^0.4.15; import './ERC223_interface....
4
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3answers
3k views

How to interact with a deployed smart contract in the real world?

I'm learning Solidity. Now can write and test smart contracts using testrpc, truffle, MetaMask and MyEtherWalet. Basically, MyEtherWalet provides the function that I defined in my smart contract, so I ...
4
votes
2answers
5k views

How to move DAO tokens in myetherwallet.com to Ethereum Wallet?

I'm new to Ethereum and trying to learn. I bought DAO tokens using myetherwallet.com, I can see them when I log in, but how do I move them to Ethereum Wallet in order to Watch the Contract and Vote? ...
4
votes
2answers
7k views

Fast syncing showing endless importing new state entries Geth 1.7.3

I used this command to sync to the chain geth --fast --cache=1024 --rpc --rpcaddr "localhost" --rpccorsdomain "*" --rpcport 8545 --rpcapi="db,eth,net,web3,personal,web3" upgradedb And then when I ...
4
votes
3answers
1k views

Is there a way to transfer my ETH from a cold storage to a hot storage without compromising it?

At first I wanted to use myetherwallet.com but now I am afraid the code may be hacked / corrupted some day. The cold storage solution seems safer to store ETH in the long run. While I understand how ...
4
votes
1answer
19k views

Import a token to MyEtherWallet? How do I determine `Decimal` value?

I'm new to MEW, but wanted to understand how to determine the Decimal value when adding a custom token. I pulled the contract address from etherscan: 0xaaaf91d9b90df800df4f55c205fd6989c977e73a The ...
4
votes
2answers
594 views

How can I call the contract constructor and send a funding value when deploying with MyEtherWallet?

This option doesn't seem to be available on MyEtherWallet. Are constructors unsupported?
4
votes
1answer
61 views

Can I use the `e` notation on MyEtherWallet?

I just found out about the existence of the "minification" process. You probably know about it already, but if you don't, it basically means that 1000 = 10^3 = 1E3 . So 1000 minified is 1E3. Or 10'...
4
votes
1answer
706 views

Are HW wallets better than password managers?

A short premise: HW wallets and password managers have surely different scopes, but they both seems to cover what I'm interested in, which is securely storing a private key. Hardware wallets: a ...
4
votes
1answer
311 views

Does a greater number of hashing rounds in aes-128-ctr scrypt key generation mean stronger encryption?

Consider the following Ethereum account I created at MyEtherWallet: { version: 3, id: '4447b704-e28c-4e93-8b1d-32f519b46692', address: '115312fc0ab77a0fb15a66baf51f58baefcee1dd', Crypto: { ...
4
votes
1answer
1k views

Can MyEtherWallet/Jaxx interact with a Mist generated Multisig wallet?

I've created a 3 fo 5 multisig wallet using the Mist browser. The first account was created in Mist, but the rest were on different computers (some offline) and I just typed in the public addresses in ...
4
votes
1answer
753 views

how does exchanges manage user's Ethereum wallets?

I noticed that Binance exchange created an unique address for every user to deposit ERC20 tokens. after the deposit, Binance transfer those tokens to a specific address, which is marked as "Binance"(...
4
votes
0answers
417 views

How can I use a Presale JSON file to keep my ETH long-term in cold storage and sell my ETC seperately?

I received Ether during the Pre-sale in June 2014 and received a JSON file and have the password. I have never tried to access these funds. I found out that I should have ETC & ETH due to the hard-...
4
votes
1answer
1k views

How do I send ETH from a simple wallet contract via MyEtherWallet?

I used Ethereum Wallet to make a single wallet contract and sent it some ETH. When I load the keystore in MyEtherWallet, I can see the balance on the main account, however, I cannot see the balance on ...
4
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0answers
2k views

Missing Ethereum transaction from Poloniex to MyEtherWallet [closed]

I have sent my transaction from Poloniex to MyEtherWallet and transaction showed up only for ten minutes and after that it disappeared completely without any trace of it. It didn't return to my ...
3
votes
1answer
10k views

How can I get a private key from a mnemonic phrase?

I want to convert a 24 words length seed phrase into a private key using web3.
3
votes
4answers
8k views

Getting notified after receiving tokens

Is there any way to get a notification(PN, Email etc.) when one receives ETH or tokens issued on ethereum?
3
votes
2answers
909 views

Does Etherwallet sends transactions without a sync blockchain

So Etherwallet (https://github.com/kvhnuke/etherwallet) is a wallet which runs on the browser, how is it possible to send transactions without download the entire copy of the blockchain ? or ...
3
votes
1answer
6k views

What is chainID? Raw transaction from myEther wallet

So I just ran a function from a contract on Ropsten from myetherwallet.com. It ran fine via metamask, but I was just wondering what chainID was in the rawTx file? { "nonce":"0x2e", "gasPrice":"...
3
votes
4answers
764 views

How to set msg.sender when reading data from a MyEtherWallet contract

The deployed contract has a function as below: function checkBalance() onlyTrainee constant returns (uint256) { return traineeBalances[msg.sender]; } When I call checkBalance(), it always checks ...
3
votes
1answer
682 views

Can I reuse a signed transaction generated offline by MyEtherWallet?

I generated a signed transaction using MyEtherWallet on an air-gapped computer, and used it to successfully send a transaction. Does anything prevent the signed transaction from being reused?
3
votes
1answer
3k views

How to hide my eth balance [duplicate]

i want to hide my eth balance from myetherwallet, etherscan , ethplorer .how to hide my eth balance in my ether wallet , etherscan , ethplorer. any methods available, please reply thanks
3
votes
4answers
3k views

Login system for DAPP

I'm building Dapp on Ethereum. The main feature of this Dapp is Register/Login logic. I Don't want to use Metamask, but I want to make Login system like MyEtherWallet without any chrome extention. ...
3
votes
2answers
8k views

How do I transfer my locked ERC20 tokens from an old account to a new account? [duplicate]

I want to move my ERC-20 to another wallet. I can't find a proper documentation that helps explain how can I do this. I am using myetherwallet.com and they have contract tab and I haved tried the ...

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