All Questions
9 questions
0
votes
0
answers
12
views
DNS using blockchain (how can i hashed my domain name ) in the code below help me to complete this code
import Web3 from "web3";
import Registry from "./contracts/Registry.json";
import Resolver from "./contracts/Resolver.json";
import Cache from "./contracts/Cache....
0
votes
3
answers
100
views
How to show the data stored in the blockchain to the client side app
I wrote this contract for an 'Online Birth and Death Registration System' that stores data to the blockchain and now I'd like to know how i can retrieve the data I store so I can display it on another ...
0
votes
2
answers
553
views
How to solve Unhandled Rejection (Error): invalid address error with web3 js
Whenever I run the code I get an error saying
"Unhandled Rejection (Error): invalid address (argument="address", value=["0xF628D397c2C1c4cB485BDF5441ac723B229f4F8f"], code=...
- 11
17
votes
9
answers
18k
views
The endpoint returned a different chain ID: 0x539 (Ganache)
I am trying to connect Metamask to ganache by creating a custom RPC with the following details:
New RPC URL: HTTP://127.0.0.1:7545
Chain Id: 5777
But I keep getting the error message The endpoint ...
- 171
0
votes
2
answers
1k
views
Web3 is not connecting to metamask. TypeError: Null object returned to account
I am currently following the tutorial in Dapp University YouTube channel where I am coding my own ERC-20 token https://www.youtube.com/watch?v=XdKv5uwEk5A&t=21611s. At 5:51:00 onwards you can see ...
2
votes
2
answers
458
views
How to deploy blockchain app in heroku
I want to deploy my blockchain app in heroku and i just want to use ganache as my blockchain network. is that possible?
0
votes
0
answers
234
views
Is it possible to use ganache blockchain when I deploy my web app in heroku? or should I deploy the contract first to a test network?
const web3 = new Web3(
new Web3.providers.HttpProvider(
"https://kovan.infura.io/v3/INFURA_KEY"
)
);
const abi = JSON.parse(
'[ { "constant": false, "inputs": [ { "internalType": "string", "...
3
votes
2
answers
3k
views
ganache-cli: how to persist new created accounts
I start my service by:
ganache-cli -d --gasPrice 0 -q --db=./db
This persists my 10 defaults created accounts, but when I create new accounts using Web3:
web3.eth.personal.newAccount('password')
...
- 31
2
votes
1
answer
3k
views
Difference between `0x01` and `0x1` status code?
Sometimes when running Ganache I receive status code 0x01, sometimes 0x1. Should I treat both as successful executions?
- 359