Questions tagged [ethereum-wallet-dapp]

Tag for the questions related to the deployment of the contracts using Ethereum wallet.

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2
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1answer
281 views

Can I transfer ether from a wallet to smart contract directly without invoking a payable function?

hey I was trying to pass some ether from my account to smart contract through metamask. Ive already given some ether from my contract to metamask account so it should be possible to do the same even ...
2
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2answers
6k views

How to transfer ether from Metamask to Myetherwallet

I have some Eth on Metamask. How Can i safely transfer it to myetherwallet? I have created a 'wallet' on myetherwallet, And I can clearly see an 'account address' on the right. Is this where I send ...
2
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1answer
116 views

How do the Ethers in Ethereum Wallet increase?

I have created a private test net and an account in Ethereum Wallet by referring this link: https://souptacular.gitbooks.io/ethereum-tutorials-and-tips-by-hudson/content/private-chain.html I have ...
2
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1answer
149 views

Confused about my Wallet

I'm new to Ethereum and I'm really confused. I am mining to my my Eth address and when I check my address at https://eth.nanopool.org/account/0xADDRESS I see how much ether I have mined so far. But ...
2
votes
1answer
406 views

How to hide a function of all but visible to the owner

How to hide a function of all but visible to the owner. For example there is a function: function freezeAccount(address target, bool freeze) How to hide it from others.
2
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1answer
456 views

Dynamic array can not be input params

contract MyContract { uint public len; mapping(uint=>byte) public names; function initContracts(byte[] contractNames_){ for(uint i=0;i<contractNames_.length;i++){ ...
2
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2answers
14k views

Howto transfer BTC/ETH from coinbase to Mist / ethereum wallet

recently I bought some BTC on CoinBase. I've transfered the whole amount from the CoinBase BTC wallet into the CoinBase ethereum wallet. But how can I send that ETH into my Mist/Ethereum Wallet (e.g. ...
2
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1answer
190 views

ethereum wallet:Your computer's clock is not synced.

i am using geth VRSION: 1.8.20-stable-24d727b6 and ethereum wallet Ethereum-Wallet-linux64-0-9-3 and i am using Ubuntu 18.04.1 LTS and on wallet startup wallet is showing the error message here ...
2
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1answer
89 views

Can't use constructor() when deploying a contract from ethereum wallet

Take the following code: pragma solidity 0.4.24; contract TestCoin { mapping(address => uint256) public balanceOf; uint256 public totalSupply; constructor(uint256 initialSupply) ...
2
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1answer
272 views

Connect privatenet with ethereum wallet

I created a private net within a folder in Documents. It works fine. I tried connecting ethereum wallet with private net...But ethereum wallet created another node in .ethereum folder and shows ...
2
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1answer
1k views

What is a Erc20 (UBT) token I received in my wallet according to EtherScan?

I look in my EtherScan and it says that 5 days ago and 10 in value I received a token called Erc20(UBT) and I click on it, it's a Universal Bonus Token that came from an address = 0x00000000000... ...
2
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3answers
498 views

How can i transfer erc 20 tokens manually in bulk?

Can anyone help me with how to transfer tokens manually in bulk?as i have to transfer tokens to multiple ETH addresses but cannot waste time transferring it one by one.
2
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1answer
341 views

Digital asset management dapp using Ethereum

I am new to ethereum and also I have tried out some examples for building smart contract using truffle and ganache. But I want to make Digital asset management dapp using ethereum. Like, if have I ...
2
votes
1answer
775 views

How to integrate simple wallet on website

I couldn't find the answer to my question anywhere else so I'll explain it here hoping someone will answer. I would need to integrate a pretty simple, but of course secure, wallet on my website. ...
2
votes
2answers
368 views

How to pay transaction costs for other people

I'm currently building a feature where users can exchange their ERC20 token for a that can be used within our DApp. This therefore requires a transaction from the user to us (their ERC20 token to us), ...
2
votes
1answer
469 views

Can't call function with modifier from another contract even if the owner himself calls

So I have multiple contracts that use the same modifier. contract Token is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; Owned private owned; /// @dev `owner` ...
2
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1answer
99 views

Does Ethereum wallet cache passwords?

I am using Etherum wallet (this thing: https://imgur.com/a/WGDLs) I created a new account, transferred 0.01 etherum into it. Then I went to accounts -> backup -> accounts, which took me to Users\...
2
votes
1answer
694 views

In an Ethereum smart contract, can I check the balance of other ERC20 tokens from the sending address of a recieved transaction?

I'm currently designing a smart contract, where I'd basically like to incorporate a "coupon" like relationship between two different coins. Bob can send the smart contract CoinA, and receive CoinB as ...
2
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1answer
1k views

Accessing the wallet with the keystore generated using myetherwallet.com

I assume the UTC file which got generated in myetherwallet is the keystore file. Also I have my private key noted. I understand that the myetherwallet will stay long and there is no plan to close in ...
2
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2answers
1k views

How to run ethereum wallet on a light mode linux

I just installed ethereum wallet and run from command line. After wallet started it began to download all blocks. Do I really need all that blocks to just use coins (not mining)? How can I use wallet ...
2
votes
1answer
403 views

Can I maintain my ethereum wallet on AWS?

Can i download and sync my wallet on Amazon Web Services? Is there any security concern when using Cloud services assuming that all the cloud based servers are encrypted.
2
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1answer
121 views

Sign transaction by user

I'm newbie in Ethereum and actually, I'm trying to implement test application which is using smart contracts. On UI I'm using web3.js Currently, I'm looking for, how user can sign transaction (...
2
votes
1answer
282 views

How to give more resources to Ethereum Wallet?

I downloaded the Ethereum Wallet a few weeks ago. Since then it has been syncing with the network (I don't have it running all the time). As today the block download progress is 3.700.000/3.912.000. ...
2
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2answers
585 views

How to make Parity work on my PC. “Parity can't run on your pc”

My blocks freeze at around the 760,000 mark, therefore I downloaded Parity's latest version to which I then received the message above. I have downloaded multiple versions of Parity to try and fix the ...
2
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1answer
100 views

Ethereum Contract testing

I'm trying to test one of my functions in a contract which returns a bool value, and in the process of debugging I tried to retrieve the output using console log and I get the following hash: ...
2
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1answer
90 views

Which is the best Ethereum solution for small day today transaction? Like a asset exchange for $1-2

Building a portal where customer can rent out asset for the cost of $1-2. Is there any platform with low transaction cost but still make all the entries in the ledger?
2
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1answer
11k views

How long does eth.sendTransaction take?

Sorry if this type of question has been asked before, but I have not found any questions dealing with this scenario. I am using Geth and am kind of new to this thing. I bought some Ether on Coinbase a ...
2
votes
1answer
580 views

Sending custom token on testnet doesn't appear on etherScan or recipient wallet [duplicate]

The transaction is shown in my wallet with a blockcode. But when I clicked to go to etherscan.io, it said the transaction cannot be located. I searched with my address for all transactions, the custom ...
2
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1answer
914 views

Importing contracts files to Ethereum Wallet

I tried running a contract with the code below inserted on the ethereum browser and it complied successfully. I tried it on the Ethereum wallet and its giving an error of source not found. import "...
2
votes
1answer
242 views

How to fix this problem with Ethereum Wallet in order to convert DAO tokens into ethers using the withdrawal contract after the hard fork?

I am trying to convert The DAO tokens into ethers using the instructions for Ethereum Wallet as outlined in How do I convert my The DAO tokens into ethers using the withdrawal contract after the hard ...
2
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1answer
107 views

Late to the DAO Withdraw Game

So I'm super late withdrawing the DAO and depositing it in my Ethereum Wallet. I tried to withdraw my DAO on one occasion. I created a DOA Watch Contract and a DAO Withdraw Contract. Nothing happened. ...
2
votes
2answers
5k views

Building Web based UI for Smart Contract

I am struggling to get some tutorial on building web based UI to interact with smart contract. I found examples on using web3 but it uses localhost:8545. However, my understanding is that web based UI ...
2
votes
1answer
880 views

Ethereum Wallet: error of no key for given address or file

In etherum wallet I am getting an error of no key for given address or file during deployment of the contract. What will be the reason for the same? contract User{ string public userName; ...
2
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1answer
513 views

Use Hooked-Web3-Provider and Lightwallet on android app?

I'm trying to make a demo app where I can make an account through the app and store the private key. and simply send a signed transaction and from the app to a hosted blockchain on my computer any ...
2
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0answers
24 views

How to reduce corruption in developing countries using Ethereum [closed]

I would like an honest opinion on whether or not the picture below is self-explanatory. I would also like to know what more functionalities I can add to reduce the capital flight by government ...
2
votes
1answer
36 views

what is difference in ethereum transaction after constatanople upgrade?

I have heard that Constantinople update transverse the consensus protocol of ethereum from proof of work to proof of stake. So they claimed that this update could speed up the TPS(transaction per ...
2
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0answers
132 views

How can ethereum token use as payment gateway on ecommerce website [closed]

I have problem that if I created ethereum token and I want to use it in real project . especially in payment gateway . How can integrate ethereum token as payment in ecommerce website and how can ...
2
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0answers
43 views

What is a suitable pattern for building a web/mobile app that leverages ether? [closed]

Noob to ether dev. Looking to understand how to build an app that leverages Ethereum - what suitable patterns are out there (ideally to go via some tutorials). A few apps examples (from easy to ...
2
votes
1answer
359 views

web3.js new accounts without local node!

I am trying to develop an dapp, but since I am running a small server (Windows Sever 2012 R2) with limited space I don't want to host/install an ethereum node, nor geth in my server, because as many ...
2
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0answers
58 views

Can one store short text data when transacting ERC20 tokens? [duplicate]

I am having trouble understanding if i can store short pieces of text when I send an ERC20 token. I have successfully stored a small message when transacting ETH by converting it to HEX and adding it ...
2
votes
2answers
211 views

First Time Ethereum Wallet User Setup Questions

I will try to make this a fast post with just a few questions I cannot figure out the answers to: I am trying to accept/send ETH payments and have downloaded, installed, and created a wallet using ...
2
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0answers
165 views

“data” field is not working in Ethereum QR Code mobile payment

Recently, I am working on generating an Ethereum QR code that mobile wallet (e.g. imToken) can scan and pay from there. But the problem is that I cannot pass the data value. I use C# code to generate ...
2
votes
2answers
196 views

While using myetherwallet to generate offline transaction hash, can developer steal my private key?

To be very clear, I have used myetherwallet offline to send eth many times in the past. I went through the code for the version I saved and found no Maliciously code. Hypothetical for future ...
2
votes
1answer
361 views

How to connect my private ethereum network to ethereum android app?

I want to access my smart contract through a mobile app, which is on my private network. There is ethereum android app, can I connect that app to my ethereum network or if there any other app through ...
2
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0answers
296 views

Mist Wallet Contracts are stuck

I synced my blockchain using Ethereum Mist, created an account and tried to create a single wallet contract. Once I made the wallet the contact creation transaction went through, however the wallet ...
2
votes
0answers
80 views

Is using Ethereum to trade in betting markets legal in US?

Right now the betting market in US is regulated by CFTC and some sites like PredictIt have $850 limit per contract to be compliant with CFTC. I have seen some prediction markets like Augur that use ...
2
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0answers
1k views

How to remove contracts and tokens from wallet.ethereum.org

After adding several contracts from the Ropsten testnet to WATCH CONTRACT and tokens to WATCH TOKEN, I'd like to remove the contracts from displaying on wallet.ethereum.org. Is there a way?
2
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0answers
292 views

TypeError: filterCreationErrorCallback is not a function

trying to deploy contract to Ropsten network-
2
votes
0answers
225 views

Why does Ethereum Wallet download new binary for Geth (I'm already running Geth)?

I have geth running already on my computer with datadir and ipcpath flags. I then run Ethereum Wallet with corresponding flags to link the two. But as EW is starting up it still downloads geth again (...
2
votes
0answers
455 views

Validators in POS

note: Simple, layman, language would be highly appreciated! Hello, So, what would a 'validator' (after switching from PoW to Pos on Ethereum) actually, do? Specifically? Would he be required to ...