Questions tagged [ethereum-wallet-dapp]

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

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285 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 ...
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0answers
62 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.
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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 ...
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1answer
66 views

mist syncing is in discrepancy with node log

I am facing a strange syncing related situation for a couple of hour now (screenshot below makes it easiest to understand). Although my node is in sync with the network as per the node log (...
2
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0answers
426 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 ...
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0answers
75 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 ...
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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 ...
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0answers
1k views

Changing blockchain storage location in official wallet? [duplicate]

I'm aware that geth can take an option to change the location, as described here: Possible to store the blockchain in a different directory? But what about the graphical Ethereum Wallet? There doesn'...
2
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0answers
38 views

I downloaded the etherum wallet, how do you back it up wallet. [duplicate]

I saw somewhere to copy your etherum key and email it to yourself. this way you have can find it. I would imagine this would be needed, say your computer gets stolen. Please if anyone has suggestions ...
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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 ...
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3answers
571 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 ...
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1answer
84 views

Do i need miners for my own cryprocurrency which is based on ethereum?

I have a question. Do i need to find miners for my own cryprocurrency which is based on ethereum or ethereum will provide them for their fee to let transactions with my currency be accepted?
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3answers
32 views

Why I can not trade coins stored in cold wallet?

There are two kinds of wallet hot wallet and a cold wallet. Ideally, people keep minimum balance for trading in a hot wallet and most of the coins are stored in cold wallet. I am wondering why coins ...
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2answers
469 views

Is the Gas Fee refunded if the transaction fails?

I'm confusing the rule of paying gas fee when caller makes a transaction. The gas fee is needed when the transaction is made and I know that the require() is the guard function that returns all the ...
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1answer
7k 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://...
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1answer
444 views

Using a HD Wallet on server

We are working on a crypto exchange and need to organize deposits and withdrawals. How would we organize our wallet? The only HD Wallet I found so far is https://www.npmjs.com/package/eth-hd-wallet. I ...
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2answers
2k views

How to run a script with geth attach?

I am trying to get latest blocks data and gets all the transaction IDS inside the block and send that transaction IDS array to an api server. I am using this command in geth console : eth.filter('...
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3answers
359 views

From a traditional web based application how can I able to call ethereum network node?

Let's say there is a web application running on server 12.34.45.45 ip. Peer A open this web application in his own browser.Now how he will be able to connect a ethereum node where peer B is running....
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2answers
1k views

Hosting Ethereum on Digital Ocean

I am not quite sure whether this is right place to ask this question but let's carry it forward. I wanted to host Ethereum on Digital ocean. Has anyone ever tried that? Any HowTos on hosting ethereum ...
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1answer
167 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 ...
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1answer
75 views

what is the role of merkle tree in ethereum? [duplicate]

I know the functionality of merkle tree, it makes a root hash from a group of data.My question is how merkle tree is act in ethereum blockchain,precisesly in the place of transaction hash,block hash,...
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1answer
387 views

How to hide my eth balance [duplicate]

i want to hide my eth balance from myetherwallet, etherscan , ethplorer .how to hide my eth balance in my ether wallet , etherscan , ethplorer. any methods available, please reply thanks
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1answer
326 views

Solidity compilation issue : Function overload clash during conversion to external types for arguments

I am new to solidity trying to compile the code which was an old example running good with old compiler. When I tried to compile the same in remix with latest compiler, I am getting the below issue. ...
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2answers
732 views

how ipfs work in ethereum blockchain [closed]

currently i am learning ipfs and ethereum based blockchain technology,I wanted to know can we store data on ethereum blockchain and yes then how. and also wanted to know how exactly ipfs work for ...
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1answer
28 views

Is this 'good enough' randomness?

Say I wanted to create a system on the Ethereum network to place bets on a prize pool that was under the current block reward say 2.5 ETH. Would these steps be a reasonably fair way to make sure ...
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1answer
1k views

Build an Ethereum Wallet using React [closed]

Using React js i am trying to create a wallet I want to implement few functionalities 1) display balances of all the accounts 2) Display tokens by providing smart contract address how can i ...
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1answer
231 views

How can I install the Mist wallet at d:?

Windows is running on my ssd und i want not to install the mist wallet at my ssd but everytime i try to install the wallet it installs instant on c: .
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1answer
112 views

How to export mnemonics for a specific account in MetaMask

How can I get the mnemonics from a specific account in Metamask? I found the reveal seed words in the settings-dialog, but this seems to be something global. Instead of this I want to export the 12 ...
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1answer
138 views

How to trim a string in solidity?

I have a function where one of its arguments is a string. How would I check the string for leading and trailing whitespaces and remove those characters? If i get something like this: " " => ""...
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3answers
77 views

What is Metamask?

I know it's a dApp web3 browser, a wallet. But which ethereum client is used in the back end to interact with block chain? How the same account is able to connect with all networks (mainnet,testnet, ...
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1answer
374 views

What are different between peers and remote in ethereum wallet?

I run ethereum wallet on my Windows 10 PC, sometimes it displays "1 peers", and sometimes it display "remote", would you please see the image? What are different between peers and remote in ethereum ...
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2answers
638 views

What are offchain and onchain Transactions?

What is meant by off-chain and on-chain transactions? I don't get the meaning of off-chain and on-chain in general.
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2answers
1k views

How execute a contract method with private key / sign send method?

I'd like to execute an erc20 contract method without unlocking a wallet, signing the transaction inside my code. Here is how the code should look like: public async send(sender: string, receiver: ...
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1answer
272 views

How to split funds in single send transaction

Scenario: Alice Account = 2 ETH Admin Account = 0 ETH Bob Account = 0 ETH Alice wants to send 1 ETH to Bob using my application. Application will charge 0.01 ETH as it's commission and will be ...
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2answers
560 views

Creating a new wallet mobile application for newly created crypto currency

I am doing as a Intern in Apogee Tech Global in Bangalore on Blockchain for three months. My commitments is to learn solidity language, build smart contracts, learn Ethereum and Hyperledger. I learnt ...
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1answer
83 views

Deploying Smart Contract with Oraclize to the test net

I'm having difficulty deploying my contract to the Rinkeby TestNet. I made a local copy of the Oraclize API and saved it here:n//Users/simon/Documents/usingOraclize.sol In the Ethereum Wallet ...
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1answer
253 views

How to access Mist transaction logs?

I have a private blockchain deployed on one machine and Mist & Ethereum Wallet on another machine. Both the machines are connected through RPC. I have made a simple smart contract which adds two ...
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1answer
611 views

Can not deposit ether into a contract

I tried to build a basic contract from some resources but failed to deposit the ether into this contract. Following is my code, is it correct that "msg.value" and "address(this).balance" be 0 at any ...
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1answer
36 views

Keys and addresses terminology [duplicate]

I am trying to understand the difference between these terms : Wallet private key address in the ethereum ecosystem, and who contains ( sort of one to many or one to one relationships between ...
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1answer
797 views

Setup Ethereum-Wallet as geth RPC

I develop a dapp with truffle.js and wish to deploy to the live network. I have the Ethereum Wallet already installed (mac osx), and I'm pretty sure it runs on top of geth - am I correct? Anyway, does ...
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1answer
150 views

Invoking a smart contract from a front end

I am building a Dapp that will need to invoke a smart contract and then send funds to another address. Do, I need to be running my own node to accomplish sending a request to the Ethereum network? Is ...
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1answer
497 views

How to interact with a network without a wallet installed?

I'm making a Dapp for users who don't have a wallet installed and have no ETH address. I would like users to use my account for all transactions. I'd like to sign my transactions with the contract ...
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2answers
416 views

Ethereum (Mist) Wallet Backup

Last morning I thought it'd be a good idea to get a software wallet for my ether. I've picked Mist and after a few tries (getting stuck on blockchain download) I got it to install. I've put in there ...
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4answers
1k views

My Ether has been automatically sent to another address

I sent 0.04 Ether to my metamask address and within minutes the Ether was resent to another address automatically without my knowledge. this is my address 0x627306090abab3a6e1400e9345bc60c78a8bef57 ...
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3answers
754 views

Can I build Dapp without forcing users to spend ether?

I know this is a weird question but I wanted to see what are the alternatives for quick user adoption of a Dapp. Currently majority of the market is familiar with fiat currency and forcing the user ...
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1answer
429 views

All My Transactions Since Friday Are Still Pending

I've been having a real bad time with Mist and the Ethereum Wallet as no transactions at all are getting confirmed are just pending. My client is fully synced and displays the same block number as ...
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1answer
356 views

How can I build a smart Oracle of my own for a smart contract? [closed]

I need my smart contract to access data from some source. I want to build a smart Oracle in order to achieve this.
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1answer
669 views

how to verify a bitcoin or etherem address?

My project allows a user to add their existing bitcoin/ethereum wallet address. Is there a way to call an API to verify these addresses?
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1answer
865 views

Using the same chain folder for both Parity and Mist/Ethereum Wallet

I have been having some issues with the Ethereum Wallet and after days of on/off syncing I decided to use parity, which works like a charm so far. However, I would like to use the Mist browser to play ...
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1answer
664 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?