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Questions tagged [ethereum-wallet-dapp]

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

2
votes
0answers
21 views

How can ethereum token use as payment gateway on ecommerce website [on hold]

I have problem that if I created ethereum token and I want to use it in real project . especially in payment gateway . How can integrate ethereum token as payment in ecommerce website and how can ...
1
vote
0answers
13 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 ...
2
votes
1answer
17 views

ethereum wallet:Your computer's clock is not synced.

i 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 and on wallet startup wallet is showing the error message here ...
1
vote
1answer
204 views

How to hide my eth balance

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
0
votes
1answer
18 views

Unusual error with bytes calldata

pragma solidity >=0.4.22 <0.6.0; interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes calldata _extraData) external; } contract ...
0
votes
0answers
9 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
1answer
17 views

Token transfer is not working

I am trying to transfer a token from a token contract. the control reaches till the point where I have the transfer statement later it fails. I do not understand why it is failing. I made sure the ...
1
vote
0answers
42 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 ...
0
votes
1answer
31 views

Mineable Tokens? Is it possible? If so, how can I make one? [duplicate]

Just wondering if you could make a ethereum token that is mineable. I saw this link, but don't really know about it and i dont know anything about solidity. Can someone please help me? Thanks, ...
0
votes
0answers
27 views

Returned Error: The method personal_signTransaction does not exist/is not available

I'm on Kubuntu 18.04 using Ethereum Wallet 0.11.1. When I try to send an amount of ETH and put in my password or anything in the password prompt I get the following message: Returned Error: The ...
0
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0answers
27 views

Can I turn any ethreum address to an account on the node?

I am planning to create an account in my client app using web3,I want to have the privateKey on the app too. is there anyway to propagate this address as an account on an Ethereum node?
0
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0answers
13 views

Error on contract code on ethereum website

I have been trying to make a token, but nothing has worked for me. I tried the code on the ethereum site, but no luck. I get this error: Expected identifier, got 'eth_compileSolidity' constructor() ...
0
votes
1answer
14 views

Error creating contracts on Ethereum wallet. Need help [duplicate]

I am trying to create an ERC20 token off of ethereum, but when I put the code in the editor in the ethereum wallet, I get a weird error. It says: "throw" is deprecated in favour of "revert()", "...
-3
votes
1answer
20 views

How to built the own wallet using solidity [on hold]

I am working on blockchain . I created own cryptocurrency and i want to transfer the coin by own wallet so how to built wallet. I want to built own ethereum wallet to transfer the coins.so share the ...
0
votes
0answers
6 views

How to see the balance and users of a smart contract in front-end with web3.js

I have a contract deployed on the mainnet where you can get a daily percent by investing eth. After achieving 200% the contract deletes your address wallet with the option of starting a fresh ...
1
vote
1answer
41 views

address.transfer not working

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

Error while performing a sendSignedTransaction in Web3 js 1.0

This is my javascript code: I do get a response from the signtransaction but the sendsignedtransaction fails. I do not use meta mask for this project . My ganache version is 1.2.2 and web3js version ...
0
votes
0answers
16 views

Error in setup blockchain template in AWS

I Tried to setup aws blockchain template for ethereum as mentioned here i followed all required steps but i got errors. i'm attaching error with this question.
0
votes
2answers
64 views

Error from Remix: “ParserError: Expected primary expression”

This is my code: pragma solidity>0.4.99<0.6.0; contract Election { struct Candidate { string name; uint voteCount; } struct Voter { bool authorized; bool voted; uint vote;...
0
votes
0answers
23 views

moving ETH from address

We have ETH in a wallet. However, we only have the address. The name on the wallet is Havana1943. the address shows on Etherscan with the address. I can not find it. We have a copy of the transaction....
0
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0answers
11 views

Which technology is right for lowering ERC20 transaction fees

What I want to achieve: My users sending ERC20 tokens between each other with low transaction fees usually between known routes (such as user A usually sends to user B and vice versa). What is the ...
0
votes
1answer
17 views

Golang Equivalent to list accounts on node - web3.eth.Accounts()

Does anyone know if its possible to get a list of the accounts on a node using golang, after Dialing to the node, basic PoC would be assuming the accounts are already unlocked via the CLI Basically ...
0
votes
0answers
20 views

steps to use web3js-quorum or web3j-quorum for DApp creation?

I'm trying to use web3 to interact with a Quorum Blockchain. Calls seem to work properly but I can't manage to execute a transaction from my dapp using web3 and metamask. I can execute a transaction ...
5
votes
3answers
211 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
0
votes
1answer
38 views

Getting “Contract Compilation failed” error

I am trying to run my first contract and getting this error "Contract Compilation failed". pragma solidity >=0.4.0 <0.6.0; contract SimpleStorage { uint storedData; function set(uint x) ...
1
vote
1answer
23 views

What is the difference between writing emit in an event and not using emit? [duplicate]

For example, event CoinTransfer(address sender, address receiver, uint amount); What is the difference between CoinTransfer(msg.sender, receiver, amount); and emit CoinTransfer(msg.sender, receiver, ...
0
votes
2answers
44 views

Can a payment be made automatically from a smart contract?

If I have two people who want to make a payment at a certain time, eg 1pm tomorrow for 1 ETH, can a smart contract perform that task without the payer stating their private key at the time of the ...
1
vote
1answer
19 views

How to setup a DOMAIN name for my project? [closed]

I have created one project by writing samrtcontracts and web3api . NOW i want to deploy my code into live using domain name .so that all the users can use it. How can i deploy my code into live and ...
0
votes
1answer
66 views

How to create DApp for Quorum or any blockchain without using web3 and metamask?

I want to create a Dapp for quorum blockchain, the transaction signing via a wallet either in Metamask or pure web3 wallet is an issue and does not work with provateFor transactions in Quorum. So i ...
1
vote
0answers
29 views

What is a suitable pattern for building a web/mobile app that leverages ether? [closed]

Noob to ether dev. Looking to understand how to build an app that leverages Ethereum - what suitable patterns are out there (ideally to go via some tutorials). A few apps examples (from easy to ...
1
vote
0answers
12 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 ...
2
votes
1answer
79 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. ...
1
vote
3answers
40 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, ...
1
vote
2answers
51 views

Escrow account creation in the example ICO contract from openzeppelin

I am understanding the ICO as explained in openzeppelin https://github.com/OpenZeppelin/openzeppelin-solidity/tree/master/contracts/examples When I called the "Buy tokens" the beneficiary is getting ...
0
votes
2answers
70 views

Truffle : dotenv is not working in truffle.js

I am trying to get the seed words from the powershell command prompt. Hence I am using the 'dotenv' in truffle.js require('dotenv').config(); console.log('aa - process.env.MNEMONIC : '+mnemonic); ...
1
vote
0answers
113 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-...
0
votes
0answers
54 views

Can not deploy smart contract using ledger nano s with web3 provider to rinkeby.infura.io?

I am trying to deploy smart contract using ledger nano S but i keep on getting the post to infura error 405 and cant subscribe to new block headers. How ever when i use metamask every thing works well....
1
vote
1answer
125 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 ...
0
votes
0answers
17 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 ...
1
vote
0answers
16 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"; ...
0
votes
1answer
13 views

Unable to Generate Address Endpoint Blockcypher

I am trying to generate an address using Blockcyphers Address Endpoint using cUrl. - https://api.blockcypher.com/v1/eth/main/addrs?token=eth But it returns this error - "Endpoint not found. Please ...
1
vote
1answer
89 views

web3.js new accounts without local node!

I am trying to develop an dapp, but since I am running a small server (Windows Sever 2012 R2) with limited space I don't want to host/install an ethereum node, nor geth in my server, because as many ...
0
votes
1answer
83 views

Truffle Develop Could not find suitable configuration file

Basically, after I installed the truffle the command: nom truffle -g . Then I went to set up the metamask on the google chrome. Once the metamask is set up then I try the command: truffle develop and ...
1
vote
1answer
20 views

Unknown wallet address on private development chain

Apologies in advance for the long post. I'm new to Ethereum and don't know which details are significant and which are not. I'm trying to learn about dapps by following an example in this book. My ...
0
votes
1answer
36 views

Could not resolve placeholder 'XXXX' in value “YYY”

I am unable to read my application.properties file.Here is my code for application.properties: eth.network.url="https://rinkeby.infura.io/v3/9ea96ecdf13c4756a99c19f4f34e679e"; WORKING_DIRECTORY= "~/...
0
votes
1answer
24 views

Estimation of gas in web3js 0.20

Q:- While sending only Ether One wallet to another wallet(NO SMART CONTRACT), do we need to define the default gas limit and price? i.e. 21000 * 3 OR 21000 * 4 OR 21000 * 5 etc Or I've need to use ...
0
votes
1answer
67 views

How to map multiple time and index value on same address

I wish to map the time to the address key. But currently it is working on the index key only. I just want to map time as well. Means the current time. So that I can able to get the record with time as ...
1
vote
1answer
42 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: @...
0
votes
1answer
22 views

acess variable from token contract to ico contract , both placed in diffrent files

//token.sol pragma solidity ^0.4.24; /*import "./Ownable.sol"; */ contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) ...
0
votes
1answer
50 views

How to read previous blocks data?

I'm new to block chain technology. I'm trying to store and read blocks using testRPC along web3.js. I'm able to get the latest block data but not able to fetch previous blocks data. Please some one ...