Questions tagged [dapps]
Questions about applications and projects on Ethereum: a decentralized application (dapp) does not require any servers or backends and runs independent on a distributed blockchain.
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I want to learn decentralized apps (Dapps) development can anyone guide me that how can i become a Dapps developer [closed]
As i am a beginner ii want in this field i want to master in the Dapps development and i want a full learning plan that how can i become a Dapps developer from start to end i need a full guide please ...
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Foundry or Hardhat: I'm really confused about which one should I use?
Hello everyone
I'm new in the smart contract and Dapp development and I'm so confused about choosing a framework. my questions are dumb but I couldn't find the answers by myself. Here is my problem:
I ...
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Why has the Safe{WALLET} dapp iframe an outer scrollbar?
Just integrated the Safe{WALLET} with the XPowermine.com dapp and noticed that the <iframe> on the desktop has this extra scrollbar on the right hand side. Further, since the dapp has its own ...
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React (opts:) not working, am i missing dependency?
I have a basic walletconnect web3 module here.
I am following a video from https://www.youtube.com/watch?v=L65gP0cGC30 but it errors (opts:) on the example video the text actually is grayed out so it ...
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React Dapp, Wont notify user after successful TX
This is my "Test" dapp which i am building, i am struggling to call an event handler to check if the user has approved spending on a certain contract, in this case USDt ...
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51
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Callback After Dapp Approval
I have had a contract made for me, and a dapp set up by a developer.
My question is how can i produce an event on my website when the user has approved spend of a certain token?
Can i use a javascript ...
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37
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Metamask getBalance method doesnt work
When I wanted show my eth balance in my web site it gives me this "0x103cf17cc1518eb4" how can i turn into string?
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How to inspect MetaMask
I was wondering how can I listen to the requests & data that are being sent between the MetaMask extension & DApp, My purpose is to inspect how is MetaMask reacting to DApp requests so that I ...
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truffle migration error
this is the truffle-config.js file:
const path = require("path");
module.exports = {
// See <http://truffleframework.com/docs/advanced/configuration>
// to customize your Truffle ...
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I have enabled a smart contract with transferfrom - Getting GAS error
Any advice on where to start looking for my error?
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Can someone help me embed this crypto calculator on my website?
I am trying to copy this calculator - https://plasbit.com/widgets - into my website and it does not show on my site. Please help me.
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Feasibility of implementing a Decentralized Identity Management System? (DIDs and VCs)
I am currently working on a project focused on creating a Decentralized Identity Management System by using DIDs and VCs. Our goal is to enable users to have self-sovereign control over their ...
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How to make contract transactions with Web3.py
I am getting error while deploying smart contracts with web3.py. The error says "web3.exceptions.ContractLogicError: execution reverted: VM Exception while processing transaction: invalid opcode&...
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What is the method to be able to use the mobile metamask app as a support for mobile chrome?
So this one is incredibly hard to search for because it returns so many generic posts about how to install MetaMask on a chrome browser and various other things.
My query is about how many dapps are ...
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NFT based webapp - Best architecture approach to render data to the front more agile
I am building a book marketplace where each different book launch a limited series of N copies.
Therefore for each book I create an ERC-721 contract with a totalSupply = N.
In each ERC-721 contract I ...
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Connecting to a private Blockchain via a Dapp
How can I choose an a node to randomly connect to on the cluster?
I can already connect my Dapp to the private node. But what happens in case that node is not available or a different node is more ...
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Would a circuit breaker feature always execute one block after the trigger is detected?
Lets say I had a Dapp that used a popular stablecoin whereby the stablecoin had a freeze function. Then say I wanted to detect if the stablecoin accounts were frozen and then circuit break the Dapp.
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Are there any way to pay transaction cost from a hardware wallet when deploying contract using ethers.js?
I am working on developing Dapp and facing a challenge.
▶ Thing I want to achieve ◀
I'd like to create a new wallet instance, then when deploying a contract, I want to pay transaction costs from a ...
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mint NFT for contract address. it is possible to mint nft by passing contract address?
we have 2 contracts which is deployed on Bsc network. the first contract is NFT Contract and the second one is Gataway contract were we accept payment and currency swaps Please find below code
Nft ...
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Not able to relay meta transactions to Biconomy's relayer
When I try to send signed transactions, the transactions are successful but from my personal Account and not Biconomy!!
I'm using Web3 + Personal Sign custom implementation on a basic ERC20 token ...
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Fleek CLI Error: "No api key found" despite FLEEK_API_KEY being set in .env file
I am currently working on hosting a Next.js app for an NFT marketplace on IPFS using Fleek. I've followed the steps to install the Fleek CLI using npm i -g @fleekhq/cli, built the app with npm run ...
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What is the best way to make a chart like this? (historical balance of a certain address)
I wonder how to make a chart like this.
It shows the historical balance of specific tokens.
It shows total net worth in $.
It should be on the Polygon chain.
I've been looking through 3rd party ...
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How to Reduce Wallet Prompts for Enhanced User Experience in a Blockchain Gaming dApp?
I am developing a gaming dApp on the Ethereum network and aim to optimize the user experience, particularly in interactions with the blockchain. A major challenge is the frequent Metamask prompts ...
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is it necessary to use oracles for Integrating IoT Sensors and smart contract in a Supply Chain Management DApp?
What are the best practices and methodologies for developing a decentralized application (dapp) that focuses on streamlining supply chain management processes through the integration of IoT sensors? ...
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467
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How to sign a transaction using metamask or other wallets in nethereum
I searched a lot on the internet and in the documentation, but I still haven't found the answer to my question.
I want to know how to sign a transaction through an external wallet using the nethereum ...
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Is this method technically and logically correct?
I am implementing a practice project on the topic of token pre-sale. Currently, I have created the project in such a way that, for example, a user who is going to participate in the token pre-sale ...
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Ethernaut Challenge: GateKeeper Three | Is it possible to solve this challenge using proxy?
I read online and understand the solution to this challenge. I decided to experiment and solve this challenge using a proxy instead. As per my understanding of proxies and delegate call, the following ...
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Connect & interact with dApp without wallet connection
I have a question regarding the issues I am facing on my current project. I am building NFT marketplace on the Polygon network.
The specific requirement is we should allow the users can interact with ...
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Help with “web3 not defined”
I am cloning a tutorial https://github.com/techaddict0x/liquidityminer
And when I run the debug console I get the error “web3 is not defined”
The code is the exact same, looked all over the internet ...
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currency.methods.transfer is not a function
let cost = CONFIG.WEI_COST;
var _pid = "0";
let contract = "0x3b85A341F79764821cD5c0672A4fD630c8F0DdA2";
var erc20address = await blockchain.smartContract.methods....
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Question about DAPPS
I see lots of Dapps on Ethereum, they say it's decentralized and yet each Dapp is on a domain name with a website, so how is my image that I want to sell in ETH protected?
sorry if this is a silly ...
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Why my test net transactions (created from dart using web3dart) are not getting through?
I have used web3dart to create a few ethereum transactions. All of them are getting stuck in pending.
For example:
https://mumbai.polygonscan.com/tx/...
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Getting inner ERC20 functions data from outer ERC20 deployments
I know the title sounds confusing, I hope I will be able to explain myself.
I'm building an ERC20 token, and I've imported OpenZeppelin implementation for it, changing only the decimals function and ...
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How to match winning numbers to input numbers of users for lottery daoo?
I have tried to build lottery dapps and I feel hard to find first, second, third place winners.
For example,
5 matched number - first place winner
4 matched number - second place winner
3 matched ...
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How to cut commission from the transaction with minimal amount of fees
I'm trying to build a crypto payment provider, and would like to cut a commission and keep the fees minimal on my customer
consider the transaction is from address A (the buyer) to address B (the ...
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What's the best authentication/authorization system for DApp using ReactJS and Metamask
I'm building a DApp with reactJS for the frontend and solidity for the backend. I want to build a solid authentication/authorization system possibly using some libraries but i can't find anything that ...
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Is it possible to create a 1Inch limit order, when tokens are stored in a smart contract?
I am trying to find a way to create a 1inch order, where I wouldn't be holding the tokens, but would only be approved.
Currently, 1inch requires the signature of the token holder when placing an order,...
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Can I get my scammed ETH back? [duplicate]
In a Coin Membership room, the leader introduced the ICO token project and said that now is the seed sale period.
He showed me a screenshot of the site and told me to deposit Ethereum, talking about a ...
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Can I recover the ether sent to the scam address? [duplicate]
I have remitted Ethereum to the Ico token scam address. Can I get a refund? please help
anyone can i help?
my ethwallet 0x8803C24905E9E0Ff4bd0b1Bae444ad4C93E793E9 and ...
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View Function Error in Ethers js
I Use ethersjs Cdn when i call getCounter Function in my SmartContract it return me transaction object not give me counter value. View Function not give me value it give me transaction object
async ...
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I am trying to reproduce the exception caused by metamask
The purpose of obtaining this image is to aid in my attempts to reproduce the issue. Additionally, I am curious to know if anyone within the community has encountered a similar situation before.
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Gasless transaction for student
i am developing a Dapp for the university and want the university to pay for student transaction i tried to use OpenZeppline github code but it is not working
i need a simple dapp which are using ...
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Can i transfer token to a account for next 180 days automatically without any further interaction with function using for loop?
I have written a function to lock some amount of tokens. If user lock tokens then by calling this function then token will be locked for 180 days. One of the important logic I wanted to implement is I ...
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NFTs displayed in a collection
I want to display all the NFTs with the same collection name on my marketplace however I get nothing displayed, I have a home page where it displays each collection as a card and I have a collection ...
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Connect multiple wallets simultaneously to Dapp
Is it possible to have simultaneous connections to multiple wallets?
What I mean, to make it as clear as possible, is to connect a MetaMask wallet to my Dapp and to connect Trust wallet and say one ...
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Getting status = false
I need a help. I used this source code to develop a project and its a voting app but i am stuck on this problem
async function getCurrentStatus() {
const provider = new ethers.providers....
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I am Getting this error ProviderError: Must be authenticated!
ProviderError: Must be authenticated!
at HttpProvider.request (/workspaces/Decentralized-Voting-Application-on-Ethereum-Blockchain/node_modules/hardhat/src/internal/core/providers/http.ts:88:21)
...
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how to read public struct from contract ABI using ethers.js
The contract has a struct which is used in an mapping. The blockchain explorers "code read" section allows to receive the result by providing a wallet address.
Solidity Code
struct Share {
...
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metamask sdk v0.2.4 cant not catch error when reject connect wallet on react native
I develop dapp with react native 0.71.4.
I want to connect wallet in my dapp, I install metamask/sdk 0.2.4
if i reject connection, try catch doesnt know request has been rejected.
here is my code
...
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While importing metamask sdk resolve module `crypto` error
I created a new react native project using npx react-native init and fallowed Use MetaMask SDK with React Native docs but after just importing the MetaMaskSDK it gives an error
Error: While trying to ...
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