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Questions tagged [decentralized-applications]

A decentralized application (Dapp, dApp or DApp) is an application that is run by many users on a decentralized network with trustless protocols.

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How to fix requests exceptions ConnectionError in python code?

Link to the code I am executing I am trying to execute this Decentralized File Sharing App and the code runs smoothly but when I click on the "Connect to Block Chain" option I am encountering an Internal Server Error. In the command Line, it…
user14799684
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Showing Recent Messages 65 duplicate symbols for architecture x86_64

I am using Xcode : 12.0.1, "react": "18.1.0", "react-native": "0.70.1" on integrating @walletconnect/react-native-dapp according to the docs async storage is giving error while building project
Azaz Ahmed
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Passing dynamically generated values to ERC20 Constructor

Issue Hi everyone! I'm currently working on an website that autogenerates ERC20 token by the value supplied by user. The biggest concern i've been getting is passing user values to ERC20 constructor since it expects two arguments in the constructor…
Dami Hahfo
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RPC Error: excution reverted" when calling smart contract from next.js

I've looked at similar answers regarding this error, and it seems like the majority of them have to do with using the wrong contract address or the abi. In my case, I do not think this is likely because I am using file saver to update contract…
user19438046
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Is it possible to build a real-world private ethereum blockchain without any transaction fee and what other costs should I be aware of?

Recently I have been working on a class project. I have built a Supply chain Dapp, that was based on truffle framework and ganache as a local blockchain. I have some issues regarding the concepts of private Ethreum blockchain. My question is, is it…
MHS
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I've been trying to implement a DApp browser, but can't understand how the Mobile application is able to communicate with the browser

I'm currently learning different building blocks of blockchain and the different services, applications that currently exist. In a lot of wallet applications, I've seen them implement a DApp Browser, which lets their mobile app directly communicate…
Mohammad Mazin
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How can i find and change the background color of header and footer coming from pancakeswap/uikit

I fork the DexoExchange from GitHub. Now I want to customize it according to myself. But I'm facing an issue.The issue is I cannot find the header and footer tag in this project.Pancakeswap/uikit is used in it which is new to me and some tags are…
sohaib
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How to generate ABI for an algorand smart contract written in pyteal?

I'm coming from Ethereum smart contract development background using solidity to Algorand smart contract development using pyteal. I couldn't found any guide or resource on how to generate ABI for an Algorand smart contract because in solidity the…
Tamim Ehsas
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How do I implement a dapp browser in flutter

I have tired to months to inject window.ethereum in flutter webview but to no avail, i found out i can only inject javascript on page load end, but once the page have loaded finished, window.ethereum would not be available to the dapp, is there any…
Davy King
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Is there a way to programmatically switch accounts on metamask using web3?

I'm trying to add a utility to my dApp where the user doesn't need to access their metamask extension to switch accounts. Is it possible to integrate this? For example, I would like my user to click on a button and it shall call a method, say…
Arjis Chakraborty
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Algorand WalletConnect connection not showing metadata on Pera Wallet

I'm trying to get a working connection between a NextJS application and my Algorand wallet (Pera) using WalletConnect. I am able to connect, but the NextJS application won't send any metadata like dApp name. Is there something wrong with my…
Martijn Vissers
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Is it a bad practice to deploy same contract multiple time?

I have developed this application so that I can deploy contracts with same purpose by only clicking a button. Since I am using the same abi and byte code every time, I wonder if it is a bad practice? This is my dapp. async function deployContract()…
Blockchain Kid
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While running my next.js app that is using solidity smart contracts, I am getting "Cannot read properties of undefined" error

I was running my next.js app and trying to fetch user I am getting "cannot read properties of undefined" error And following error in the console Below is the code I was using import Ewitter from './Ewitter.json'; import ethers from…
Chirag Dogra
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Ethers.js event listeners - Expected behavior for many getLogs/chainId/blocknumber requests?

I'm building a minting site that requires me to check the number of NFTs minted and display that number in real time to the user. At first I was just making a request every few seconds to retrieve the number, but then I figured I could use an event…
user12457151
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Trying to run a Brownie Dapp in Docker

I'm trying to run my brownie dapp in a docker container, but i always have the same error and can't seem to fix it: FileNotFoundError: [Errno 2] No such file or directory: 'C:/Users/username/.brownie/packages/OpenZeppelin/openzeppelin-> >…
joaoM
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