Questions tagged [ethereum-wallet-dapp]

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

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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 ...
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 ...
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 ...
4
votes
4answers
2k views

Mist: error no data is deployed on this contract address

When creating a new contract via deploy new contract (in Mist on the Test-Net), I get the error "No data is deployed on this contract address", but I filled in every field. it is a very easy straight ...
4
votes
1answer
991 views

Where's the Solidity code for Mist's default multi-sig contract wallet?

I would like to audit the Solidity code of Mist's default multi-sig wallet contract, where is it in github exactly? Thanks
3
votes
2answers
694 views

Where can I go if I still have problems with syncing the blockchain?

I've searched online, this Stack Exchange, including synchronization, and am still having problems with syncing Geth. Where else can I look and try to get help?
27
votes
3answers
25k 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
38k 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 ~/...
1
vote
2answers
3k views

How to change to private network in etherum wallet?

How can I change to private network in the ethereum wallet. I just got two mainnet and testnet in the wallet. Appreciate your answers
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?
4
votes
2answers
2k views

Missing trie node only on some blocks > is it possible to resync a specific Block?

I'm trying to trace some transactions and I'm getting the "Missing trie node" warning only on some specific blocks, but not on others I've read a solution that suggests to delete the chaindata folder ...
2
votes
1answer
887 views

Should I use Infura with Web3j for Event filter?

I'm using Web3j with Infura for smart contract deployment, calling contract method and transactions. Now I want to use Filter contract event from log. Should I use Infura for this? Is Web3j filter ...
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 ?
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?
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 ...
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
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 ...
4
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 ...
3
votes
1answer
1k views

Ethereum wallet address creation limit and ether storage limit/capacity per address

I am new to Ethereum. I would like to know How many addresses can you create in an Ethereum wallet (limit)? Meaning is it 1K, 10K or 100K addressees you can create in a Ethereum wallet What is the ...
2
votes
1answer
348 views

Metamask Warning

In an effort to improve user privacy, MetaMask will stop exposing user accounts to dapps by default beginning November 2nd, 2018. Dapps should call provider.enable() in order to view and use accounts. ...
5
votes
3answers
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() ...
4
votes
4answers
437 views

Can I use ether.js with truffle

I have buid a dapp with web3, truffle and metamask, which works perfectly fine. Now, instead of using a wallet I want to create my own wallet using ether.js, but couldn't figure out a way to use ...
3
votes
1answer
5k views

Is there a way to manually import a private key into Mist?

I want to move Ether between different wallets. I have a private key and want to move it to the Mist wallet. Any way I can do that?
3
votes
2answers
3k views

How is Ethereum Wallet's transaction cost calculated?

Lately, I've seen wildly varying transaction costs when using Ethereum Wallet. How is the fee range computed? Current range:
1
vote
1answer
6k views

How to fix checksum mismatch in downloaded node for Ethereum Wallet?

I attempted to update Ethereum Wallet to 1.8.2 and was given an error: Checksum mismatch in downloaded node! MD5: 308... Please install the geth node version 1.8.2 manually So I went to https://...
3
votes
3answers
1k views

Lost ether: wallet on some other chain

Yesterday I decided to move my Ethereum coins to my coinbase account from my PC based Ether wallet from Ethereum.org . I had 107ish coins. I sent 1.2 to my coinbase address as a test and they arrived ...
3
votes
0answers
176 views

Ethereum wallet shows “no accounts yet” and 0.00 balance [duplicate]

I last used Ethereum wallet in June or July this year. Yesterday I upgraded on macOS to 0.8.7. It is syncing very slowly; at this rate it will take a week to finish the remaining 189,000 blocks. In ...
2
votes
0answers
41 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 ...
2
votes
1answer
2k views

How to withdraw Ether from a contract

I've been playing with Token contracts, so far so good, however once the Ether is sent and the tokens created, what happens to the Ether? I have some Ether on the contract address, how do I withdraw ...
1
vote
1answer
741 views

How to interact with Smart Contract in private network with 3 nodes using Mist?

I'm looking for a method to interact with a smart contract deployed from the official Ethereum wallet. My client is Geth,and I've synchronized 3 nodes. How is possible to recall a simple method of ...
5
votes
3answers
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 ...
1
vote
1answer
662 views

Buy and sell of my tokens

How to implement the buy of tokens. That is, the customer transfers money to the address and receives tokens at his account. And Similar to sold?
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
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 ...
1
vote
3answers
5k views

How to generate Private key, public key and address

I can't find any documentation online about doing this in Javascript other than this. I want to know how does authentication work in a ethereum dApp's.. As per my understanding user seed somehow gets ...
11
votes
4answers
453 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 ...
8
votes
5answers
10k 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 ...
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 ...
4
votes
1answer
759 views

Ethereum Wallet with private testnet not working: chaindata/LOCK:Permission Denied

Trying to connect Ethereum Wallet with the private test net, but facing issues. Ran this command: geth --genesis /home/cgen.json --datadir '/home/systemname/Desktop/node2/geth.ipc ~/.ethereum/geth....
4
votes
1answer
4k views

How to specify the gas when deploying a new contract in Mist?

When I send transactions to my contract, the wallet tells me that the gas runs out, so how can I specify the gas amount when deploy a new contract?
4
votes
1answer
7k views

Stuck on Downloading Chain Structure, it keeps increasing

How long does it take to download chain structure on Ethereum Mist wallet. DAY 01: I download Mist and Geth. It sync about 20GB, after a while I shutdown system Day 02: Resumes Sync again 30GB plus ...
3
votes
1answer
3k views

Ethereum private keys

When I go to the key store folder via Mist I find a .json-file (doesn't have a .json extension, but I believe this is still a .json file) that corresponds with my ether address (UTC blablabla). If I'm ...
3
votes
2answers
160 views

Is there any other platform to check contract working?

I am trying from past few days but didn't get test ether to test my own contract...is there any other platform where I can test my contract or can you send me some ether ...
3
votes
1answer
136 views

Is it possible to have separate eth receive address with each user

I want to accept ethereum from a crowd for selling something from my webpage. I want each individual to send ethereum on an assigned receive address. Is it possible to assign separate ethereum address ...
3
votes
3answers
1k views

how to deploy smart contract in ethereum network using ropsten network?

I have created a smart contract(a standard token smart contract) in solidity and truffle. Now I want to deploy it to ethereum network. I want to use ropsten network because I want to use metamask ...
2
votes
2answers
189 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
3answers
738 views

Can we create multiple private blockchains in a single computer?

I have already created a private blockchain in my system. Now can I create another private blockchain in the same system? I have tried to create one more by changing the chain id in genesis block and ...
2
votes
3answers
472 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.
1
vote
1answer
165 views

Retrieve lost account password?

I'm a bit upset about my whole situation, I used my LastPass password manager in Chrome to generate a 16 character special password. I put that password in my LastPass secure notes, go back to it ...
1
vote
3answers
520 views

Is it possible to send/receive Bitcoin using a smart contract?

My Question goes in the sense of what's possible in terms of creating a Dapp that allows to send/receive BitCoin just like it would any other given ERC20 Token. Is this possible to achieve for a Smart ...