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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Executing an contract via code and without metamask / link an account to JS code to automatically wirte on Ethereum
I'm trying to get my JS-code to call a smart contract on Ethereum (kovan testnet) that will write something on the blockchain and therefore needs ether (actually gas). I called a view function which ...
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Eth wallet keywords api
How can I create an ethereum wallet and get the 12 key words by using the ethereum rpc? I cannot find the rpc api.
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HD paths on MyEthereumWallet
I hae some coins on MyEthereumWallet, that I can see in block explorer, but can not access it. I think that the mnemoic and password is correct. My assumption is that I messed up something with the HD ...
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1answer
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EthereumJS returning wrong public key
I'm using https://iancoleman.io/bip39/#english to generate a random 12 word mneumonic with the following settings.
Mneumonic language: English
Coin: Ethereum
Derivation Path: BIP44
It generated the ...
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2answers
132 views
Approve contract to withdraw funds from users's wallet
I want to achieve the following flow:
A user clicks a button allowing my contract to spend funds on the user's behalf
A user clicks a second button whereupon funds are transferred from the user's ...
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RE: Universal Wallet
I would like to create a multi currency wallet as a POC. I am currently able to make a wallet for Ethereum (Like balance, tx and all) but would like to create it for other as well (like Bitcoin).
I ...
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interact with a smart contract without having a wallet
I have a smart contract that basically store a document and I integrated it with a user interface that let the user go to the website and search for that document .. very simple idea.
I want to let ...
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1answer
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how to let the user use Ethereum DApp Without having wallet
I have a question regarding Ethereum and DAPP ..
I have a smart contract that basically store a document and I integrated it with a user interface that let the user go to the website and search for ...
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1answer
22 views
MITM attack in hosted wallets
i have a question:
in the web wallets(hosted wallets)when user want to make a transaction and send the information to the wallet server , can a one change the information(man in the middle attack)?
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Does metamask uses web3?
I was curious if metamask uses web3 for communication with eth node ? I tried google for it; showed bunch of other results but didn't precisely answered my question.
Indepth answer on how metamask ...
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1answer
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Why do no transactions and no balance show on a wallet I know has a transaction history?
I created an Ethereum wallet 4 years ago, and bought some ether. At the time it was purely an experiment and I knew very little about crypto, I just wanted to see how to do it. I then forgot about it ...
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Contract wallet allowance and fees
I just want to ask, does Contract Wallet need an approval/allowance? as far as i know, Contract Wallets are executed by Wallet owner (Owner account) and the gas fees are paid by this owner account.
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how to be notified about incoming transactions instantly?
I'm creating a platform which users are able to receive ETH on their own wallets (addresses). They will give the addresses to others, but the question is how can I be notified that new transactions ...
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How to trace transactions to get information about hot and cold wallets?
I am researching ways how to trace transactions to get data about hot and cold wallets of exchanges, gambling sites, cantors, mixers. What sources of data could I use? What algorithms and scripts ...
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1answer
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API call to get a list of all transactions sent TO a specific address (not contract)?
I have used the Etherscan API call "http://api.etherscan.io/api?module=account&action=txlist&address=0xddbd2b932c763ba5b1b7ae3b362eac3e8d40121a&startblock=0&endblock=99999999&sort=...
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What is the privatekey to be used to sign web3.js transactions?
I created an account on metamask, and downloaded the json of my wallet.
It's on rinkeby.
The structure of the json is
{
"version":3,"
id":"...",
"address":"....",
"crypto":
{...
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2answers
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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 (...
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How to create account using mnemonic words or private key in web3js and call contracts using that account
I have a simple React Project with web3@1.2.4 installed and I want to call a contract's method like this:
await maincontract.methods.CurrentMethod("arguments").send({ from: accounts[0]/*my account ...
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2answers
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Is there any difference between address that have Smart Contract and “normal” one? [duplicate]
Is there any difference between address that have smart contract on it, and "normal" address (address that You can create private and public key pair)?
For more context, this is the problem I'm ...
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1answer
30 views
CLI wallet where I can pass in a Private Key and send out ETH and then delete this key?
Is there a CLI command where I can pass in an ethereum private key and send some coins to another address? I'm trying to build out a reoccurring payment system where a user can send 1 eth to another ...
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1answer
48 views
Different address make same signature for one message
Is it possible two different wallets (address) make the same signature for one message?
I have one message: '...
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2answers
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What is meant by a Ether Wallet?
Somebody please tell me what is a Ether Wallet?
I got the following answer:
A blockchain wallet is a digital wallet that allows users to manage
bitcoin and ether.
Is it like a account?
Zulfi.
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1answer
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Does an online crypto wallet actually store crypto currency?
I have done some code with web3 and smart contracts and I've realised that you don't have to store your currency anywhere, because it is already there; it can be read from anywhere.
That made me ...
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1answer
42 views
Do I need ETH in my exchange account to send out ERC-20 tokens to an external wallet?
I'm new into ERC-20 tokens. Let's say I buy an ERC-20 token in an exchange with USD. When I want to transfer that token to my own external wallet (say Nano S), do I need some ETH in the exchange (...
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Opera wallet web3 problems
I am writing a Dapp. I'm not an expert. It works perfectly on Edge, Firefox, and Chrome (with MetaMask). But I get the following error on Opera when the cryptowallet is on but not synced:
{
"error":...
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1answer
44 views
Building a deterministic wallet without random seed phrase instead multiple static inputs
If I want to be able to create a private key given inputs x,y,z and these inputs are constant, if I add enough entropy as a salt would it be secure to create a key this way (in terms of brute force ...
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How often Geth/Parity access the archive chain files? Can I store remote?
I'm running a full archive node to receive and send funds (ETH & other tokens also). The size of the blockchain is very large, so I'm thinking about storing it remotely and mount as an sshfs ...
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0answers
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Combine two addresses into one
I want Solidity code to define a function f that would map two Ethereum addresses A, B into a new address X = f(A,B) such that there is nearly zero probability that X is an already taken address (an ...
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How can link metamask wallet to create Android and web wallet for ERC20 token
I studied Solidity and Web3.js .I still need to know how can use metamask wallet that use in chrome extension to create as a mobile wallet and web wallet for client side.
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What Ethereum wallet I need
I have lots of experience with bitcoind and it's RPC calls.
I want similar Ethereum wallet that supports:
RPC calls from PHP, Pyhton and similar languages.
erc20 tokens.
Must work on Linux VPS (I ...
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2answers
266 views
Common Gas Wallet for ERC20 Wallets?
We have a wallet structure where users send tokens to individual user wallet addresses generated for them, we then sweep all the funds in the user's wallets to a centralized pool. The individual ...
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How to allow mobile wallets to sign and access to my dapp
I'm building a dapp application on Ethereum using React & Web3js. As usual the dapp will get the injected provider from Window.web3 (MetaMask), perhaps. The problem that I'm facing now is how can ...
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MetaMask listed as “web wallet” on official Ethereum website
MetaMask is listed only in the "web wallets" section of the official Ethereum wallet guide. Obviously, MetaMask is written in Javascript and runs in a web browser. But this is also true of the ...
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1answer
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How to setup clef signer with clef --stdio-ui
I have geth running on rinkeby network and successfully used clef as a signer using command.
clef --keystore ~/.ethereum/rinkeby/keystore --chainid 4 --stdio-ui
Also started geth with clef as ...
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What Android App has block explorer functionality for Ethereum testnet?
I need to interact with my web app that has blockchain functionality and it creates wallets on paper (pls dont ask why). It's using ropsten testnet. Is there an Android app that I can easily scan the ...
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Is there a non-Electron based 100% open source wallet for Linux
I have tried nearly all desktop wallets, they are either based on Electron which does not run great on a Raspberry Pi with X11 Forwarding or don't seem to be open source, some have at least some ...
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1answer
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Is Ethereum suitable as a store of value?
Say you bought some ether when ethereum was at 1.0.
Most of the time Ethereum requires you to update (via a hard fork) to the latest software.
This means you'd need to update your wallet every time ...
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1answer
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How can we create ethereum web wallets?
I am looking to create web wallets compatible with ethereum token standards, similar to this: https://wallet.callisto.network/
Can someone guide me to tutorials or guides as how to create this on my ...
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369 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?
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Ethereum wallets that support “Custom RPC URL” like Metamask
I'm running a private blockchain and I've been using Metamask connected to my custom RPC URL with no issues.. I'm curious if there's any other Ethereum wallet that let's you add and connect to a ...
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1answer
109 views
Embedded Ethereum Wallet
Is there any embedded wallet library available for Ethereum I can use for the IoT devices (Raspberry Pi, Arduino etc)? I want something similar to MetaMask but, instead of holding the wallet addresses,...
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Ethereum wallet does not work with version over geth 1.8.23
Ethereum wallet does not work with version over geth 1.8.23
I have geth 1.9.1 installed, I am fully synchronized, but ethereum wallet requires you to download 1.8.23 and does not want to work with ...
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1answer
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Get a list of tokens inside an ethereum wallet address
is there a way(mostly a api) to get all the tokens currently being held by a wallet address?(Their contract addresses)
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2answers
641 views
Using AWS CloudHSM to sign transactions
Does somebody knows how to properly use AWS CloudHSM to sign ethereum transactions (Keccak256)?
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How I can use blockchain in my current Mobile wallet application?
I want to apply the blockchain concept for my Fiat currency wallet.
I have android app and use the nodejs in backend(API). I want to apply the blockchain in payment module to secure the payments.
...
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1answer
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Find keyfile of an account
I have several accounts in my Geth wallet. I need to locate the keystore file of a given account but there doesn't seem to be any connection between the keystore file names and the accounts. How do I ...
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1answer
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How risky is it to ask a dev to deploy smartcontract for you?
I’m currently in the process of hiring a dev to develop my token and my smartcontract and deploy it.
Will he need my ETH private key to do it ?
Can he change the destination of the funds once the ...
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1answer
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Get ETH and Token Balances of Wallet address
How do I get a simple and fast balance of ETH and all Token owned/stored within a wallet address?
I have seen similar question and the closer answer was in this demo: http://wbobeirne.com/eth-...
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Are there any examples of ETH addresses that periodically send or receive funds at regular intervals?
I'm looking for any known ETH addresses that send or receive money at regular intervals. For example, once per day, an amount from a hot wallet might be sent to a cold wallet. Are there any widely ...
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Ethereum fast sync and wallet balance?
I'm planning to run a Ethereum server for getting wallet balances at a specific time, which type of node should i run, fast sync will work ? or should i go for archive node ?
