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Questions tagged [wallets]

Wallets are applications on top of accounts, so called smart contracts, which manage your Ether. There are simple savings wallets or multisignature wallets.

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Mobile android app that can import a Metamask private key?

I'm having some issues sending out from metamask and getting failed transactions. I think maybe I should use another app on android if possible. What android wallet apps can import a Metamask private ...
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How to add an address for which I have the corresponding private key into MEW?

I'm quite new to Ethereum, so, pls, forgive me if I say something wrong. How can I see the balance of one already existing address, for which I have the corresponding private key, in MyEthereumWallet?...
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24 views

Where is the wallet location after save with web3?

I want to create a wallet similar to Metamask with Web3.js library. So far I have been playing around with some of the commands. The point is after I create my wallet with web3.eth.accounts.wallet....
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31 views

What is deference between wallet address and account address?

I'm new in Ether world. I want to make mini Crypto exchange site with 2 coin ETH and BTC. What is deference between wallet address(maybe It's called Main Ether address) and account address ? or it's ...
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How to create a signed ethereum transaction between two wallets using JSON rpc in a CURL command?

I am new to blockchain. I created 2 wallets using MyEtherWallet. When I use MyEtherWallet to create transactions to transfer Ether between these two wallets (on testnet), it works. I now want to ...
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Should Ethereum wallet need to be imported to a node to send eth from it using CURL JSON rpc?

I created 2 wallets using MyEtherWallet. Noted down the private key, public key pairs. If I then use one of the wallet's public key as the from address and the public key of the other wallet as the to ...
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1answer
24 views

Ethereum wallet Vs Ethereum account?

I created an Ethereum node (geth) and this automatically created an Ethereum account. Is this account an Ethereum wallet? I then created 2 other accounts using personal.newAccount() command. Are these ...
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20 views

SignTransaction with a private key and sendTransaction with an other account

is it possible to sign a transaction with Alice private key and send the signed transaction using Bob account ?
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1answer
32 views

Ethereum HD address generator

I'm writing a library for Ethereum BIP44 address trees and comparing it against https://iancoleman.io/bip39/ using the same mnemonic phrase. Given this mnemonic (just a test) report dash combine ...
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1answer
27 views

ERC20 Token management in a CEX

Imagine I create a new account on lets say KuCoin. I create a ether/erc20 address and I send an amount in ERC20 tokens to that address. KuCoin then sends that to their mainwallet. How do they do ...
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3answers
28 views

Why I can not trade coins stored in cold wallet?

There are two kinds of wallet hot wallet and a cold wallet. Ideally, people keep minimum balance for trading in a hot wallet and most of the coins are stored in cold wallet. I am wondering why coins ...
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Myetherwallet Balances?

I was testing on (Ropsten) Myetherwallet, everything was fine yesterday morning, then that evening, my balances (Ropsten Ether and Tokens) would not show. I was getting "(error_21) Not a valid ERC-...
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Does go-ethereum encrypt new wallets by default?

And if so, is it considered safe to store and encrypted wallet on a unencrypted drive? I know there is a process to lock and unlock accounts with a password, but how difficult is it to brute force ...
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40 views

User ether.js mnemonic for bitcoin

I'm using Ether.js for my react native app to create mnemonic. i want use Wallet.fromMnemonic(code, path) to get key pairs but when i send bitcoin Derivation Path i get and ethereum private key which ...
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0answers
34 views

Ethereum Qr-code with amount?

How should a qr-code be formated with an amount in it? The npm package ethereum-qr-code uses the following format according to EIP-67: ethereum:0x7cB57B5A97eAbe94205C07890BE4c1aD31E486A8?gas=42000&...
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35 views

Failed to register user “user1”: Error: Calling register endpoint failed with error

i'm going to register a user to hyperledger fabric in linux according to this tutorial but after this command : node registerUser.js i got this error : Failed to register user "user1": Error: ...
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1answer
48 views

Error: Returned error: VM Exception while processing transaction: revert

pragma solidity ^0.5.0; contract MultiSignatureWallet { uint constant public MAX_OWNER_COUNT = 2; event Confirmation(address indexed sender, uint indexed transactionId); event Revocation(...
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1answer
22 views

Saving ethers in local private testnet

I created a private ethereum tesnet using geth and it runs well on the system. However, I lose all the ethers in my account everytime I close the application. Is there a way to permanently save the ...
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1answer
71 views

HD wallet public to public key derivation and non-hardened keys

This question is about hierarchical deterministic wallets and the bip32 standard which, as I understand it, allows you to deterministically derive child private/public key pairs from a master seed ...
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1answer
53 views

Changing “proxywallet” in “local.config” in ethOS, but I receive mining reward in previous address

I've changed my proxywallet from proxywallet 0xB4... to proxywallet 0x5B... in the local.config file. However, I received mining reward again in previous address: 0xB4... . Do I need to restart the ...
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0answers
27 views

Is there a way to figure out if 2 (or more) address is belong to same HD Wallet account or not?

I'm a new to Wallet concept, I know that a HD Wallet structure is created from a root seed as Mnemonic Code, from that HD Wallet help to generate child keys as the meaning of multiple difference ...
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1answer
31 views

Ethereum Decentralized Wallet Service API [closed]

With the decentralized nature of the blockchain space it makes sense for this to be a thing. I need a wallet API service that does not store private keys, allows our servers to create a wallet & ...
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1answer
32 views

How to wallet sync with blockchain network

I'm newbie, I have question: when a wallet connect to a network blockchain, does it connect to ALL of node in network or SOME node? And how to a wallet sync blockchain ? Thank you very much!
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What are the available ethereum/erc20 standard wallet on China's appstore?

Heard that ImToken wallet is removed from Chinese appstore ; Am looking for a ethereum based wallet that could be downloaded from the Chinese appstore.
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1answer
31 views

Watch an Ethereum address for incoming payments

I want to watch a set of Ethereum contracts and be notified (preferably by email) when a contact receives a payment to it. I prefer me not to write my own software for this and not to install it on ...
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1answer
92 views

Is there an Ethereum Testnet Android Wallet?

I am looking for a testnet-specific Android wallet app to load with a few Ropsten test Ether, for a web app I'm building. But for the life of me, I cannot find such an app for Ethereum. For Bitcoin I'...
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1answer
22 views

can an ethereum contract control alternative assets like btc?

can ethereum contracts control other assets, where the actual contract owns the btc and will only release it back to the address it was sent from (to avoid a DAO type hack) once a certain signal is ...
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1answer
29 views

word length in mnemonic phrase

What is the standard length of words in the mnemonic phrase for various ethereum wallets ? I need to know this in order to decide what should be the choices given to the user while creating a ethereum ...
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2answers
150 views

Should My ERC721 Show In A Wallet?

We've created and deployed a contract to mint and issue an ERC721 token. I've gone to our admin page in our dapp and "sent" 3 of them to my personal address. When I check my address in etherscan I ...
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1answer
38 views

Mineable Tokens? Is it possible? If so, how can I make one? [duplicate]

Just wondering if you could make a ethereum token that is mineable. I saw this link, but don't really know about it and i dont know anything about solidity. Can someone please help me? Thanks, ...
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2answers
99 views

How Does Exchanges Implement Gas Fees for ERC20 Tokens

Any crypto exchange like binance, bitfinex and so on let you deposit and withdraw various ERC20 tokens. Technically I don't understand how they implement gas fees when I withdraw? I deposited 100 ...
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1answer
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Error creating contracts on Ethereum wallet. Need help [duplicate]

I am trying to create an ERC20 token off of ethereum, but when I put the code in the editor in the ethereum wallet, I get a weird error. It says: "throw" is deprecated in favour of "revert()", "...
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1answer
51 views

How to built the own wallet using solidity [closed]

I am working on blockchain . I created own cryptocurrency and i want to transfer the coin by own wallet so how to built wallet. I want to built own ethereum wallet to transfer the coins.so share the ...
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0answers
92 views

Storing private key in javascript variable or local storage

I am creating my own wallet as hobby project. I want to avoid using metamask, so idea is to store private key encrypted(AES) on my server, where salt will be my password. When I enter password and ...
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1answer
33 views

Usage of the account part of a derivation path to generate Ethereum addresses

I recently read that Ethereum doesn't use the part of the BIP44 derivation path dedicated to accounts. What happens if I still use it? I just tried generating addresses under this path m/44'/60'/1'/0/...
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1answer
26 views

How do you calculate a wallet balance in the world of shards?

I have a general question about calculating account balances in the new world of sharding. In the Bitcoin blockchain, in order to accurately calculate someone's wallet balance, you have to analyze ...
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1answer
25 views

Accounts and Wallets

Testing the GethJS console commands. I put in practice the personal.listWallets and personal.listAccounts. The first return me this value: And the second command return me this: It seems that are ...
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1answer
136 views

Staking Ethereum

Brand new investor to crypto but have been reading as much as I can on the space over the past couple months. I am looking for someone who could help me me a with a step by step guide on how to stake ...
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1answer
470 views

I accidentally sent ERC20 tokens to my Ledger Live wallet, which does not support them. How do I get the tokens out?

The Ledger Live wallet does not support ERC 20 tokens. How do I see and remove ERC20 tokens accidentally sent to a Ledger Live wallet address?
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1answer
152 views

Creating wallets with Web3j

I generate a code to create wallets for a private chain made with ethereum. String password = unlockAccountParameter.getPass(); ECKeyPair keyPair = Keys.createEcKeyPair(); WalletFile ...
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1answer
41 views

How to get Seed or pwDerivedKey with upload keystore from eth-lightwallet?

<html> <body> <script src="./lightwallet.min.js"></script> <script type="text/javascript" src="web3.js"></...
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2answers
89 views

How to use a metamask Wallet from web3,py?

I deployed contracts to Ropsten test net using truffle and a metamask wallet to pay for the transactions and Infura as a Hosted ethereum node. To do that in Truffle, I have to use the truffle-...
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1answer
36 views

Use DNS TXT records for wallet address resolution?

Are there any Ethereum wallet projects using DNS TXT records to resolve wallet addresses? Setting a TXT record would allow users to have a human readable wallet "address", eg $ dig example.com TXT ...
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2answers
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Will a transfer go through on a testnet transaction on meta mask to luno

What if you sent your ETH on the Ropsten testnet via Metamask to an ETH platform gateway like Luno (https://www.luno.com) ? Will you receive your Ether and will it reflect on that account? I've done ...
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1answer
68 views

ethers.Wallet.fromEncryptedWallet is not a function

I have the following code to create my own wallet: var ethers = require('ethers') let data = {"address":....} var password = "***"; var json = JSON.stringify(data); ethers.Wallet....
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1answer
150 views

Getting TX is not defined when trying to send signed transaction [closed]

I am trying to learn how to send a signed transaction using web3 1.0 and Infura.io. I have node.js running locally for testing. I can successfully create an address and check balances but am getting ...
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3answers
115 views

how to generate mnemonics from randombytes

I am able to get the randombytes using react-native-crypto-js const words = CryptoJS.lib.WordArray.random(32); Is that possible to generate mnemonics using random bytes.
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1answer
24 views

How do I send coins over personal blockchain?

What I have done --> I have created my own blockchain which is basically forked from Ethereum. So everything that can be done on Ethereum, can in theory by done on my blockchain. I can run a local ...
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1answer
129 views

Error: Cannot find module 'ethereumjs-wallet'

A truffle test needs ethereumjs-wallet const wallet = require('ethereumjs-wallet'); I tried npm install ethereumjs-wallet and even npm uninstall ethereumjs-wallet npm install --save ethereumjs-...