Questions tagged [ethereum-wallet-dapp]

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

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Does Mist Wallet support transfer of Ether through a Smart Contract?

I have implemented a private ethereal blockchain. I have also deployed a simple trading smart contract. It runs fine once deployed through MIST wallet. The problem is that it does not subtract ether ...
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1answer
2k views

How to use custom ERC20 Tokens for payments [closed]

I am currently implementing a private Ethereum Blockchain. I have also created a custom ERC20 Token smart contract. I want to know how to use this custom token instead of ether for another smart ...
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2answers
512 views

Access ethereum client from remote machine

I need to access ethereum client setup on remote hosted machine (google cloud ). How can I access the client from the web browser of my local machine ? Current installations on my machine user@...
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1answer
196 views

input decimal type parameter for contract in ethereum wallet

Is there any way to make ethereum wallet can input decimal type parameter for contract at "WRITE TO CONTRACT". For example, "sellToken" function, I want user can sell 1.23 tokens. I have see the ...
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2answers
43 views

How to reach my ethereum wallet?

I have an Ethereum wallet address, but I don't know from which platform. How can I find out were my wallet is from?
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1answer
57 views

Downloaded Wallet from Ethereum Site and sent money without realizing what I was doing. Help! [duplicate]

I tried really hard to figure this out on my own, but I'm pretty out of my depth, and I feel like the things that I have found that could answer my questions assume I already know some stuff. I'm ...
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1answer
528 views

Error when calling a function of a smart contract with web3j

I am trying to use a function which returns a value of the smart contract (pakoin). contract Pacoin { /* This creates an array with all balances */ mapping (address => uint256) public ...
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1answer
2k views

How to set truffle-hdwallet-provider as the Web3 currentProvider inside a web page

https://github.com/trufflesuite/truffle-hdwallet-provider/blob/master/README.md provides sample usage for the deployment configuration inside tuffle.js. I need a sample that update the Web3 ...
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1answer
352 views

how can you deploy smart contracts on main ethereum network? [duplicate]

I have created a dapp and using truffle I have migrated and tested it on ganache, I was wondering how can I deploy same application on main ethereum network.
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2answers
415 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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1answer
621 views

how does exchanges manage user's Ethereum wallets?

I noticed that Binance exchange created an unique address for every user to deposit ERC20 tokens. after the deposit, Binance transfer those tokens to a specific address, which is marked as "Binance"(...
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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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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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0answers
223 views

Transaction not showing up in Ropsten Etherscan

Around an hour back , I initiated a transaction on Ropsten network . I used Ethereum wallet for the transaction. Attaching a screenshot of the transaction below . But till now I cannot see this ...
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1answer
317 views

How to create custom testnet like ropsten? [duplicate]

Is that possible to create a private testnet which can act like ropsten network. i want to create a private net and i want to see all translation via online from etherscan.com is that possible?
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1answer
1k views

Sent GNT (Golem) from Bittrex to my Ethereum wallet on my Nano Ledger [closed]

Ive just sent some GNT (Golem)coins from Bittrex to my ledger nano s ethereum wallet address, I have just found out that nano doesn't support GNT directly, but only through myetherwallet, is it ...
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1answer
158 views

Transfer ETH from wallet into two different accounts(sites)

Could I have one wallet that can be used for two different cryptocurrency sites? For example: If I transfer ETH into my wallet form one site, could I used my ETH in my wallet to deposit the ETH into ...
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2answers
1k views

How do I update Geth when using Ethereum Wallet

How do I update Geth to the latest version when I am using Ethereum Wallet on a Mac OSX? It is not prompting me for an update to Geth as I skipped it the first time Ethereum Wallet was opened after ...
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2answers
403 views

Does Ethereum Wallet need a separate update of Geth on a Mac

(1) When the Ethereum Wallet is upgraded to 0.9.3 and then opened, it prompts to upgrade to a new version of Geth. Although it's on a Mac computer, the Geth version it suggests is type "amd/64", which ...
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1answer
101 views

Is it possible to host a new smartcontract and access it through api?

Smart contract is already deployed and we can view our own smart contract. Now we want to access its method from API? var tokenContractABI = {your token contract ABI} var tokenContractAddress = "{...
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370 views

How come Go Ether and Ethereum Wallet both say 0 ether but Etherchain says .05? [duplicate]

When I try web3.fromWei(eth.getBalance("<My Account>"), "ether") I get 0. Also when I install and run the Ethereum Wallet, I see my account but it says 0. But when I open etherchain and input my ...
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1answer
296 views

wallet or node installed

After downloading and installing Ethereum wallet for mac from Ethereum web site When I start the app, I get the initialisation screen saying "Ethereum node needs to sync, Downloading block.., ...
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1answer
702 views

How can a user buy tokens from the Web?

I know Token holder can send Token to other user by using Mist Or MyEthereumWallet but How it is possible by any web application? is there any specific ethereum api's by which we can buy sell token ...
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1answer
93 views

Making millions of transactions reliably

I'll explain the situation : I want to log Web2 actions onto a blockchain - say, an access log. On top of that, I'm assuming the content supplied to the browser has passed many hands before reaching ...
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0answers
76 views

Can't deploy contract as I can't input value into “FROM” field

I'm trying to deploy contract through ethereum wallet . But I can't input value into the FROM field . What should I do?
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1answer
91 views

Ethereum Wallet, No TX Confirms, How to adjust gas price

I run a full node on the ethereum wallet 9.3, have attempted to tx's in the past 3 days with no confirmations and Gas limit used 151,458, but how can I adjust the gas price manually, currently at 14.
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3answers
751 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
2k views

Remove Ethereum wallet from Mac downloaded from GitHub

I'm looking to remove the Ethereum wallet I downloaded off of GitHub, from my Mac: https://github.com/ethereum/mist/releases ... I've pulled in the application to AppCleaner, in hopes that it would ...
1
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1answer
613 views

Ethereum Wallet shows 0 balance on Ropsten [duplicate]

I have latest version of Mist. As you can see here https://ropsten.etherscan.io/address/0x0227e9a68e3cf3d970247114afefa9444b9a4e09 I have 10 ethers on my account. I waited for days nodes to get ...
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0answers
487 views

How to get incoming transaction list in ethereum [duplicate]

We want to get all incoming transaction list of our contract with receiver details. We want to catch all new incoming transactions in ethereum
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1answer
904 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 ...
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1answer
288 views

How to send several arguments to an solidity function using an array or a dictionary?

Sorry in advance for my english I am French :) I try to create a simple ethereum wallet. The idea is to allow the user to create a contract and to interact with it. I am using meteor, web3 and an ...
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0answers
180 views

Where does blockchain data come from if there are no peers?

I'm still having problems syncing. I've kept my client up-to-date, I'm using an SSD, and I have 1Gbps/1Gbps internet service. It just hangs with 270 blocks remaining forever. The logs say: INFO [...
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4answers
469 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 ...
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1answer
206 views

How to start GETH console?

I'm getting the following: ➜ voting_truffle geth console WARN [11-29|22:53:43] No etherbase set and no accounts found as default Fatal: Error starting protocol stack: datadir already used by another ...
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2answers
763 views

Unable to test allowance and transferFrom function in a ERC20 contract?

I am learning ERC20 contract and stuck with allowance and transferFrom part. Approve function approves an allowance for an address (spender) to transfer tokens from owner's contract to another ...
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1answer
127 views

Interacting with trade/order function which require sha3 hash

I'm currently building a dapp that use both of theses functions : function order(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce) { bytes32 hash = ...
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1answer
307 views

Why the balance that I see in the Ropsten isn't reflected in Truffle console?

This is my account #1: http://ropsten.etherscan.io/address/0x6bc701e7c3b642fc12a3a6f7d1144b8200a26401 and I sent some ETH to account #2: https://ropsten.etherscan.io/address/...
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1answer
132 views

Is it possible for a ERC20 token to be associated with an application account after the fact?

Say you want to create a new utility token offering, and owning that token will be useful in an application still in development. You don't want to dissuade people from purchasing by requiring a lot ...
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4answers
1k views

How do I make a smart contract on MyEtherWallet?

I've tried downloading the Ethereum wallet but it's taken weeks to download blocks. The only other option is MyEtherWallet. I asked on Reddit someone said theirs a way to do it with MyEtherWallet and ...
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1answer
267 views

Can I buy Ether directly to Ledger Nano S?

Is it possible to buy Ether directly to Ledger Nano S? Because I don't want to download Mist, then create account there, and then wait for the entire blockchain to sync, mainly because while syncing, ...
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1answer
49 views

Is there a way to communicate with big files stored in a database from ethereum blockchain?

For example, if my smart contract holds very basic detail of a patient and I want to access his / her medical report stored in a database (mongoDB) .
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1answer
4k views

Create own ethereum wallet and web app

I am new for ethereum and I have a few knowledge in ethereum token. I already created my own custom cryptocurrency using ethereum wallet app. Now I want to integrate it with my app for transaction ...
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1answer
69 views

How to call a payble function in embark? When I am trying it is showing gas limit exceeds

when I am trying to call payble function in embark it is showing gas limit exceeds. Please tell me where I am wrong? ///////////////// Index.js: $('#buy button').click(function() { ...
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1answer
255 views

The transaction from (account name) to ('undefined' or account name) couldn't be successfully executed [duplicate]

I am trying to do some testing on Ropsten testnet but I cannot deploy contract or even send Ether. I get this error when trying to send ether: The transaction from "Main account (Etherbase)" to '...
1
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1answer
195 views

Should you allow self transfers?

I'm new to this and I have a question regarding the following case: function transfer(address _from, address _to, uint _amount ) internal returns(bool) { // Do not allow transfer to 0x0 or ...
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2answers
130 views

Did I effectively lock me out of my own smart contract?

I am afraid that I have locked myself out of my own contract and that my funds are frozen inside. It would be great if someone could confirm this. I've created the following smart contract using the ...
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1answer
89 views

What were the first 5 technical steps in launching Ethereum?

I am a developer for about 10 years now and quite new to the crypto world. I understand the basic concepts for Blockchains and tokens and proof-of-whatever. But what I am missing is: After ...
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0answers
262 views

How can I debug the interaction between two contracts?

I have a solidity file that has: pragma solidity ^0.4.18; contract World { mapping (address => bool) players; mapping (address => ResourceBank) resourceBanks; function giveZero() ...
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1answer
266 views

If I scan the ETH blockchain, how do I know if the ETH addresses belong to ERC-20-compliant wallets?

If I scan the ETH blockchain, how do I know if the scanned ETH addresses belong to ERC-20-compliant wallets?