Questions tagged [ethereum-wallet-dapp]

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

192 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
6
votes
1answer
2k views

Mist error: “unable to connect to socket:timeout”

In mist wallet i am getting an error of unable to connect to socket and couldn't compile source code.Do help me where i am doing the mistake.
5
votes
4answers
589 views

Can Ethereum DApps work without downloading all blocks in the network?

I've just downloaded Mist (the Ethereum wallet) and am waiting for all blocks to download. I'm on the test network and its been 24 hours with only 50% of the blocks downloaded. My question is, if one ...
4
votes
0answers
596 views

How to update the Ethereum Wallet Solidity Compiler

I'm using the latest Ethereum Wallet version which is 0.9.0 and I want to update my latest Solidity compiler since it seems that the wallet is using this version 0.4.13+commit.0fb4cb1a.Emscripten....
4
votes
0answers
523 views

Switching to Ropsten on windows

I'm using geth on a linux VM, and Ethereum Wallet on my Windows. I had no problem at all switching to Ropsten on linux, but my Wallet refuses to change. I used geth --datadir /path/to/testnet/data ...
3
votes
0answers
27 views

Ethereum wallet accounts all use same password though I made different ones?

(tech level, beginner) installed wallet version win64-0-11-1 deployed a contract, made a token using the example code on ethereum site. had two accounts in the wallet. used main account to send ...
3
votes
2answers
1k views

How to use mnemonic to recovery my ethereum wallet

I use web3j to create my ethereum wallet.the Code just like down import org.web3j.crypto.Bip39Wallet; import org.web3j.crypto.Credentials; import org.web3j.crypto.ECKeyPair; import org.web3j.crypto....
3
votes
0answers
615 views

Ethereum wallet stuck on loading

I have installed Ethereum Wallet and switch it to the Ropsten Testnet after first start, it synced all blocks. After restart I am trying to run it, but it stuck on loading splash. I am on Windows 7, ...
3
votes
1answer
786 views

ERC223 Token Fallback Function Usage

I'm currently writing the "Trade" smart contract which is similar to "Crowdsale" smart contract. The only function that I want to add is "sell" function. In general Crowdsale smart contract is used ...
3
votes
0answers
458 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 ...
3
votes
2answers
1k views

Call deployed smart contract from web3.js

I have small test smart contract, which is deployed to my test network. And I want to use a server to call the function in the contract. Here is the code: payontime.sol pragma solidity ^0.4.0; ...
3
votes
0answers
125 views

How to enable autobuy of Ethers in exchange of my CryptoCurrency?

I'm referring this page : https://www.ethereum.org/token#automatic-selling-and-buying My question is that how is it possible to integrate third party in our Smart Contracts to be deployed on Ethereum ...
2
votes
1answer
408 views

Can the Android Metamask Extension be used with DApps?

I've successfully downloaded the Metamask Firefox Add-on, and imported my wallet into it. However I'm failing to see how I can use this add-on from within my DApp like I do on Chrome, using the ...
2
votes
1answer
59 views

How to have users sign transactions on an ethereum based platform without giving up their Private Keys to the platform?

How to have users sign transactions on an ethereum based platform without surrendering their Private Keys to the platform? Need the process to be automated, while users not giving up their private ...
2
votes
1answer
44 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
votes
0answers
103 views

Unable to call setter function in solidity using Infura

Solidity code contract Greeter { string public greeting; function Greeter() public { greeting = 'Hello'; } function setGreeting(string _greeting) public { greeting = _greeting; } function ...
2
votes
0answers
183 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
1answer
408 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
votes
0answers
297 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
81 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
votes
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
votes
0answers
300 views

TypeError: filterCreationErrorCallback is not a function

trying to deploy contract to Ropsten network-
2
votes
0answers
230 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
287 views

How to add EthereumWallet's wallet to geth?

i am struggling to add my EthereumWallet wallet to geth. I should run a command like this: get account import <keyfile> I downloaded a file from the EthereumWallet website, and I ran this ...
2
votes
0answers
63 views

Preventing Ethereum Wallet to download binaries

On Windows 10, I have a separate geth.exe running with custom configuration. But when I run Ethereum Wallet (0.8.10.1708) it downloads new binaries. Is there a way to prevent it from doing that? THX.
2
votes
0answers
1k views

why ethereum wallet keeps on “Downloading new node” and doesn't move to sync or anywhere else?

I 've just installed the wallet from github it all went good but now I m stuck with that downloading new nodes stuff and it doesn't seem to go further to sync or anywhere else. Mac OS X 10.9.5 Mac Pro ...
2
votes
0answers
428 views

Ethereum Wallet Will Not Sync

This is a continuation of my first question re: DAO withdraw problems. I'm running EW (latest update) on my MAC. I never connect with more than two peers and my wallet has not synced correctly since ...
2
votes
0answers
77 views

Multiple arguments and return params

Sorry for a newbie question. I'm designing a smart contract wherein I need to send in many( around 50) arguments to a setter method and return a list of same number of arguments in a getter. So ...
2
votes
0answers
42 views

In solidity, struct has some mistaken?

contract MyContract { struct Posposal{ uint posposalId;//防止复核数组变动时 address voteSponsorAddr;//投票发起人 bytes1 description_;//投票内容信息 0 转币 以后扩展 uint userId;//投票给目标以太币地址所对应的id uint ...
1
vote
0answers
23 views

where to host express api that communicates with smart contract to be fully decentralised?

I need to host express api that communicates with smart contract to be fully decentralised. Any to host it decentralised.
1
vote
0answers
16 views

vyper no mappings allowed when adding a function to initialize a struct that has a map inside

Version Information vyper Version (output of vyper --version): 0.1.0b17+commit.eaa6754 OS: Debian GNU/Linux 10 (buster) Python Version - 3.6.2 Environment (output of pip freeze): asttokens==2.0.3 ...
1
vote
1answer
36 views

Receiving error while getting state variable value after using selfdestruct method “Error: Returned values aren't valid, did it run Out of Gas?”

I am using selfdestruct method and passing the payable address to it but receiving the following error when trying to get the value of a state variable : "Error: Returned values aren't valid, did it ...
1
vote
1answer
27 views

How do I develope a QR code for a 64 character hex string generated ethereum address?

I am learning about how the 64 character hex string generated Eth Address is formed. Is there a program for this?
1
vote
1answer
99 views

How to kill a contract in ethereum?

I'm trying to kill this contract /** *Submitted for verification at Etherscan.io on 2016-08-31 */ //sol Wallet // Multi-sig, daily-limited account proxy/wallet. // @authors: // Gav Wood <g@...
1
vote
1answer
79 views

I got this error during truffle testing. AssertionError: it returns true: expected { Object (tx, receipt, …) } to equal true

DappToken.sol function transfer(address _to, uint256 _value) public returns (bool success){ require(balanceOf[msg.sender] >= _value); balanceOf[msg.sender] -= _value; balanceOf[...
1
vote
0answers
58 views

Not able to decode the input data from transaction using web3j (Java)

I am creating transactions using web3j and passing some private data in that transaction. The transaction is also getting mined . I have subscribed to the mined blocks, where I am fetching the ...
1
vote
1answer
150 views

How to decode InputValue of ethereum using java web3j

**I'm trying to decode the inputValue of an transaction using web3j without using any contract abi and wrapper class,Im loading the contract using its contract address ,is there any way/inbuilt ...
1
vote
2answers
39 views

Connect dApp hosted on cloud with Geth running locally

I've my dApp running on AWS and Geth running locally. How am I supposed to connect my hosted dApp with the Geth? I'm connecting my web3(using web3.py) using my computer's(Windows OS) IP address. ...
1
vote
1answer
98 views

(error_10) Please enter a valid data value (Must be hex.)MyEther Wallet

im trying to deploy smart contract on Myteherwallet but geting an error while deploying byte code of smart contact which is written in solidity remix IDE I have even tried to change the object byte ...
1
vote
2answers
45 views

How to find out the number of Validators of a transaction if i have its transaction hash

I want to find out how many validators have validated my transaction.My transaction has is 0x051430dc5cd84c44954e43b25f8709c9c1a1c634f384ec6dd7610f6f945732e1 can anyone tell me how many validators ...
1
vote
1answer
54 views

Can you transfer money from a smart contract to an eth address without writing code?

I have an ethereum contract, which linked to a wallet that I control (i.e. I have the private key). The contract has 241 Ether in it. Is there an easy tool available to get the ether out of the ...
1
vote
0answers
65 views

scatter confirmation for sign a transaction?

I have built an dapp. It's almost like twitter where the user can tweet and also use as a microblogging site in blockchain.I have used scatter as transaction signer for using my dapp. The real problem ...
1
vote
1answer
204 views

Decoding Hex value in solidity

I am trying to view values stored on my ethereum contract using ethereum wallet. Currently the values are being placed onto the contract in hex format. Is there a way to decode them on the contract so ...
1
vote
1answer
343 views

To handle emitted events from solidity in javascript in truffle suite

The function I am accessing will emit events i need to use that event but the function is a transaction when i am accessing the event it turns as promise pending . So suggest me some methods. thanks! ...
1
vote
0answers
54 views

ethereum wallet running a private net 0 peers 0 waiting for blocks

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 in the geth console i started the miner but either is not ...
1
vote
1answer
34 views

is there any method convert mutiple params to one bytes in web3js ,and then get these original data from bytes in solidity?

eg: the params in js code below,how to convert to one bytes var min=100; var max=100000000000; var price=1000000000000000000000000000; var name="john"; in solidity code below,how to get original ...
1
vote
0answers
16 views

Backup The Ethereum Wallet Account names

As you know, the keystore folder stores account keys. So if I want open my accounts(which was created by Linux client) by MacOS client I need just copy the keystore folder. But in this way my ...
1
vote
0answers
1k views

Issue in installing truffle-hdwallet-provider

I am trying to install "truffle-hdwallet-provider" using the command "npm i truffle-hdwallet-provider --save". I am getting the beow mentioned error. Please assist me in resolving this. truffle-...
1
vote
0answers
23 views

Wallet files in a Dapp

I am developing an application from the truffle webpack and I have created my own wallet, adding my account to a json file: $.getJSON('../wallet.json', function(data) { var password = "xxx"; ...
1
vote
1answer
279 views

Input byte array must be in range 0 < M <= 32 and length must match type-web3j

I have created an api to addCandidates. But when i run the api i get error: Input byte array must be in range 0 < M <= 32 and length must match type My codesnippet for addCandidates is: @...
1
vote
1answer
402 views

Uncaught Error: CONNECTION ERROR: Couldn't connect to node web3.min.js:1 http://localhost:8545

**Hi, I am doing a sample project on Ethereum where 2 fields ( Emp name, Emp Id) will be taken from the UI and set those values using a smart contract and show the values back to UI. Getting below 2 ...