Questions tagged [ethereum-wallet-dapp]

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

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64
votes
2answers
49k views

What is the relationship between Mist and Ethereum Wallet?

In https://github.com/ethereum/mist/releases 0.3.6 the files are named Mist. Starting in 0.3.7 the files are named Ethereum-Wallet. Will files named Mist take over in the future, or will there be 2 ...
27
votes
3answers
26k views

payable() function In solidity

I have read many examples of payable functions, but I didn't understand any of them. Also, they talked about modifier in payable. My questions are: What exactly does payable() function do? ...
26
votes
9answers
40k views

How to get private key from account address and password?

What I have 1. I am able to create new account with personal.newAccount() method of web3 api. 2. I am working on my private blockchain. 3. geth node start with following command:- geth --datadir ~/...
18
votes
4answers
34k views

How can I find my `chaindata` folder?

Someone referred me to the chaindata folder to troubleshoot a problem I am having with Ethereum-Wallet/Mist. How can I find it?
18
votes
6answers
13k views

How to set a different datadir in Mist?

With bitcoin and others, you can use --datadir option to specific where blockchain, keystore, etc are saved. But doesn't work with Mist. From the offical wiki: To configure the location of the ...
17
votes
6answers
12k views

Best way to test a smart contract

I just want to deploy and call a simple sample smart contract only for testing purpose. Do I need to download the entire ethereum blockchain? Its too huge and takes too long to download. Can someone ...
17
votes
2answers
12k views

In Mist browser how can I move the data (blockchain) to another drive on Mac OSX?

My Mac "System" drive is almost full. As I actually have two drives, I want to move the blockchain from the default location to the second drive. How can I do it ?
16
votes
4answers
5k views

How do Ethereum clients generate unique addresses?

How do Ethereum clients, like Ethereum Wallet or Eth-Lightwallet, generate unique addresses that haven't been used before, and what is the likelihood that these addresses have been used?
12
votes
4answers
5k views

CryptoCurrency NODE.js Web3 Ethereum - Can't connect to TESTRPC

I am trying to connect to my testrpc instance from a my web3 application but I can't seem to connect. The below code should return an array of all the accounts in the testrpc chain. Code: Web3 = ...
12
votes
2answers
4k views

How to pass constructor parameters to a contract using Truffle?

I am using testrpc and truffle for deploying contracts.I want to pass constructor parameters while deploying. contract User { string public userName; function User(string ...
11
votes
4answers
461 views

How to determine if ISP is blocking Ethereum traffic

My "Ethereum Wallet" from ethereum.org used to connect to several peers. A while ago I noticed it was taking longer and longer to sync and the number of peers dropped. It got worse, and seldom ...
9
votes
2answers
2k views

Best way of accepting ERC20 tokens in my service

I need to allow users to deposit and extract ERC20 tokens in my service, and I'm wondering what's the best way of implementing that. My idea is to generate an account for each user, and when a user ...
9
votes
1answer
7k views

Could somebody please explain in detail what this Ethereum contract is doing?

I am new to ethereum & blockchain technology and trying to understand somethings(Etheruem, Truffle, DApps etc.) here and there from the internet. From Ethereum official website, Create a ...
9
votes
1answer
965 views

DAPPS - Scope of what to put in your smart contract

As I'm learning more and more about developing Dapps, I'm having trouble understanding what needs to be stored in the smart contract (over our database etc..). Let's take the case of a simple betting ...
9
votes
1answer
9k views

How can I specify an external harddrive as the download target for the Mist blockchain in Ubuntu?

How can I specify an external harddrive as the download target for the Mist blockchain? Hi there, I am using Linux Ubuntu 15.10 My harddrive is quite full and I need to download the whole Mist ...
9
votes
1answer
565 views

Ethereum Wallet Contract with two owners can't transfer ETH

I set second owner for contract with ETH and dailly limit for transfers. I can transfer ETH under this limit. But large quantity transfer (to DAO contract) is not work. One owner (my first account in ...
8
votes
5answers
11k views

What is the cause of the error: Expected import directive or contract definition

I'm working on the tutorial at https://www.ethereum.org/dao and I'm getting the following error: 1:5: Error- Expected import directive or contract definition. function owned() { ^ When I get ...
8
votes
1answer
5k views

How to remove The DAO contract from Ethereum Wallet (Mist) watch list as it is freezing?

I added The DAO to my Mist watch list, but as many people I experienced freeze of the wallet since. I would like to remove this contract that probably generates too much transactions to watch but as ...
8
votes
3answers
9k views

I am having trouble doing the initial sync of Ethereum-Wallet, what can I do to troubleshoot?

I am trying to sync Ethereum-Wallet (aka Mist) for the first time. Unfortunately, it is taking a really long time (days) and I was told that this should only take a couple hours. What can I do to ...
8
votes
2answers
3k views

Storing private data on the ethereum blockchain

I plan to make an app utilising Ethereum that will store private data about a user. Eventually, I want this data to be accessible by selected users. I have seen conflicting answers & discussions ...
8
votes
1answer
652 views

Will it ever be possible to group multiple ERC20 tokens into a single transaction?

Specifically, if I wanted to send multiple different tokens to a smart contract, but it was important to the contracts function that all tokens arrive at the same time, could I put; 20 Token A 45 ...
8
votes
1answer
627 views

How can I import accounts created by quorumwallet into Ethereum Wallet Mist?

I created an Ethereum address using quorumwallet.com. How can I manually import it to Mist Wallet so I can transact using Mist?
7
votes
2answers
12k views

Ethereum Wallet vs. Mist (vs. Testnet vs. Mainnet)

I'm having a bit of trouble completely understanding the inner workings of ETH and the Ethereum wallet UI vs Mist (when having used testnet), and I need to ask some rather stupid questions to ...
7
votes
1answer
1k views

I created a wallet contract, sent ether to it and now cannot send to another account

While experimenting. I creating a wallet contract. Here is the address: https://etherscan.io/address/0xC23501aB1E8E5C5EDB0fFA83C5A4DcFb9c31a355 I sent some ether to it. Now I want to send the ether ...
7
votes
3answers
2k views

Ethereum Testnet mobile app wallet

Is there any Mobile Wallet like Jaxx, but with testnet(like, kovan, ropsten)? Please do suggest me, I am workin on the cryto coin transfer application.
6
votes
4answers
1k views

How to troubleshoot a white screen in Mist browser?

I keep running into issues with white or black screens showing up after installing the mist browser or the ethereum wallet. How to troubleshoot a blank screen in the wallet or browser?
6
votes
4answers
2k views

address.transfer not working

pragma solidity ^0.4.23; contract ApprovalContract { address public sender; address public receiver; address public constant approver = 0x5AEDA56215b167893e80B4fE645BA6d5Bab767DE; constructor() ...
6
votes
3answers
3k views

Error creating contracts on Ethereum wallet

First of all, I'd like to provide a disclaimer. I'm not a developer, I never studied codes, and never wrote scripts since I was 14 years old. I'm doing this project for the company I work in at the ...
6
votes
3answers
2k views

Mist 0.7.3: how long does it take to sync and how much data do I need to download?

I just installed Mist 0.7.3 and would like to know how long does it usually take and how much data does it download as of today. What other alternatives are there to Mist if I dont want to download ...
6
votes
1answer
2k views

Can we modify a deployed contract in ethereum-wallet?

I have deployed a contract in ethereum-wallet for creating my own crypto-currency. I want to ask that in future if i want to add functionalities to my currency then is it possible ?
6
votes
2answers
2k 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
1answer
132 views

Is that easy to turn a centralized app into a dApp hosted on Ethereum blockchain?

Currently I have an app that I use on my own servers. It is coded with JavaScript and PHP. The code is ready, I mean already exists. Would it be difficult to turn it into a dApp using smart-contracts,...
6
votes
1answer
2k views

Why aren't my accounts / keystore files showing up in Mist / Etheruem Wallet?

I recently upgraded to 0.7.4 (Windows) and all my accounts are gone. In the keystore folder, I can see what I think are my keys. However they are not being auto loaded. When I went from 0.6.1 to 0.7....
6
votes
1answer
2k views

Where does the mist browser store the node log files?

Mist uses to launch it's own client (geth or eth) in the background. Does it store the node's logs? If so, where?
6
votes
1answer
4k views

How do I add more gas to transaction in the Ethereum Wallet?

I'm trying some things out in the ethereum wallet but it keeps guessing the amount of gas wrong. How do I send more gas in the ethereum wallet?
6
votes
2answers
3k views

Token transfer: Intrinsic gas too low

I have created a cryptocurrency by following this link .I have deployed the contract in Mist. I am using transferFrom() function in Ethereum wallet to transfer currency from one account to other but ...
6
votes
2answers
293 views

What's the chainstructure that mist is downloading?

What is the highest number of chain structures that I need to sync with? I'm currently on 10.08 million, and the block sync is stuck at 2,562,029. Is this normal? The website telling me which block ...
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
3k views

Connect Mist with testrpc on a Mac

I followed this answer to connect Mist to testrpc: https://ethereum.stackexchange.com/a/10109/5995 The command to start Mist with arguments doesn't work on OS X so I tried this instead, which doesn't ...
5
votes
3answers
2k views

Transfer from contract address

I created a contract with a payable function but the ether is stored in the contract I am looking for a way to transfer the ether to another address
5
votes
1answer
522 views

Why is it that the Mist client can not display the transactions?

"Latest Transactions" not updating in Mist Wallet after sending Eth from Polo to my wallet. Balance is updating fine but can't see any transactions since 3/31.
5
votes
2answers
665 views

How does mining work in ethereum private test net?

I'm working on smart contracts and using Ethereum wallet. I have formed a private test net and successfully deployed smart contracts on that network. But, I didn't get how the miner functionality ...
5
votes
3answers
2k views

How to use metamask for etheruem dapp

I am trying to create an application using ethereum ,where node.js has used to call methods of smart contract and angular as frontend . I want to use the metamask wallet so my apication can ...
5
votes
1answer
2k views

Does ethereum support something like bip32 extended public key?

Bitcoin and Litecoin have something called XPUB key or Extended Public Key that essentially allows to track all generated public addresses, so think monitor your total balance in one key. I was ...
5
votes
1answer
659 views

Turnkey/White-label solution for custom ERC20 token wallet GUI

I've created a token and I feel Ethereum's Wallet/Mist is too cumbersome for my users, as well as Parity. I don't want to guide my users step-by-step into watching my contracts, I want to give them ...
5
votes
1answer
47 views

Smart Contract & Google Tag Manager

Is it possible to create a smart contract that could initiate functions based on variables set in Google Tag Manager? For instance, I would like to set up a mechanism in my blog for authors to receive ...
5
votes
3answers
137 views

Smallest possible Dapp?

I have a contract with a bunch of functions that don't involve ethers or any kind of funds at all. Basically all I want is to have a html page with forms that allow people to use those functions. All ...
5
votes
1answer
116 views

Mist not syncing properly

Hopefully someone can help me out with a problem I'm experiencing. I created a wallet contract to which I transferred the ETH on my account. Unfortunately, a few days later I restarted Mist and ...
5
votes
1answer
582 views

why is my connected peers so few and blocks syncronising so slow even it stops

it took so much time to do the syncronising but still not completed, I want know if the syncronising is always this slow, or is there some way to make it quicker?
5
votes
4answers
525 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 ...