Skip to main content

Questions tagged [testnets]

testnets are an alternative blockchains to be used for testing and development with no value attached

Filter by
Sorted by
Tagged with
0 votes
1 answer
13 views

contract deployment success in other network but fails in amoy testnet

I try to deploy contract in amoy testnet, but it failed. I have plenty of balance, and had no problem with provider. This is my failed transaction (https://amoy.polygonscan.com/tx/...
rrrrssss's user avatar
1 vote
1 answer
33 views

How are network changes propagated across ethereum network?

quick knowledge question: if ethereum decides to change some parameters of the network, such as; SECONDS_PER_SLOT SECONDS_PER_ETH1_BLOCK ETH1_FOLLOW_DISTANCE how will these be propagated to the ...
Muhammad Yasir's user avatar
0 votes
1 answer
41 views

How to test my Wrapped token/Stablecoin in a testnet?

Is it possible to test if my wrapped token or stablecoin peg system is working in some testnet? Or I need to deploy it in the mainnet?
Ryan Holanda's user avatar
1 vote
1 answer
76 views

Storing MQTT on Ethereum Chain or is there a better way?

I'm working on a college project where we are using IoT sensors (raspberry pi) to monitor the supply chain conditions, think temp, pressure, humidity etc. This data is being transmitted via MQTT to a ...
howtomqttblockchain's user avatar
0 votes
1 answer
19 views

How to determine whether code is running in a JS VM such as Remix, as opposed to ETH mainnet?

block.chainid always returns 1 for both Remix VM and ETH mainnet. There has to be some intrinsic variable that will always return a different value compared to the other environment. I'm aware I could ...
Ashraile's user avatar
  • 125
0 votes
2 answers
27 views

storing login credentials, mySQL or IPFS

hi im very new to developing, total newbie here and im on my final year project on blockchain development. i want to ask if for creating a login session we must store the credentials (username & ...
rokuroxx's user avatar
1 vote
1 answer
280 views

Full node on sepolia

I want to start testing my smart contract on an ethereum 2.0 testnet. I know there are different node providers like alchemy or quicknode but using these services I can incurr in rate limiting. The ...
ayman's user avatar
  • 15
0 votes
0 answers
19 views

My code doesnt return token address from contract

contract.js file: import { ethers } from "ethers"; import CustomDexABI from "../utils/CustomDex.json"; import CustomTokenABI from "../utils/CustomToken.json"; export ...
Fabo Joseph's user avatar
0 votes
0 answers
68 views

Error: could not decode result data (value="0x", info={ "method": "retrive", "signature": "retrive()" }, code=BAD_DATA, version=6.11.1)

const fs = require("fs-extra") const ethers = require("ethers") const { JsonRpcProvider } = require("ethers") require("dotenv").config() async function main() {...
Muhammad Arif zafary's user avatar
0 votes
1 answer
25 views

Looking for BSC RPC Provider with Log Monitoring

I'm in search of a reliable RPC provider for accessing the Binance Smart Chain (BSC) network, preferably with log monitoring capabilities similar to Alchemy. Any recommendations or insights would be ...
adam mr's user avatar
  • 131
0 votes
1 answer
12 views

Test-net recovery

Guys I send my token to the testnet address when I trying recover that on Coinbase wallet it’s telling me that I don’t have access to the right account, I can still recover my tokens or everything it’...
Martin's user avatar
  • 1
0 votes
2 answers
610 views

Does Uniswap allow testing swap on testnets?

I am testing my smart contract on goerli testnet. Everything is working. After I complete adding an LP when I want to test whether it is able to swap, the system keep showing "Insufficient ...
yaoyao's user avatar
  • 1
0 votes
1 answer
54 views

ZkSync Sepolia support?

we are currently developing a solution to tokenize billions of dollar of real world asset on ZkSync Era and we need add support for multi-signature scheme. I can see here that there is support for ...
dymayday's user avatar
1 vote
1 answer
29 views

How does the Sepolia Test Network work?

How do Test Nets like Sepolia stay in operation? According to chat GPT hosting a node has no token or financial award so why do people do it? In that case how are people supplying free faucets if ...
AlwaysCodedFresh's user avatar
0 votes
1 answer
64 views

Foundry Anvil (local test network) database

I am using the Foundray Anvil local network to test my application. Is there an option while initiating the test network to store data of blockchain in a specific location? Similar to this --db /my/...
111Seven's user avatar
0 votes
0 answers
13 views

while executing transaction on Bitfinity Testnet RPC Error: Internal JSON-RPC error

The error VM278:1 MetaMask - RPC Error: Internal JSON-RPC error. {code: -32603, message: 'Internal JSON-RPC error.', data: {…}} code : -32603 data : {code: -32015, message: 'internal error: the ...
Kartik Bankar's user avatar
0 votes
1 answer
96 views

I want a GRT tokens faucet site or any link where I can buy these testnet

I want a Graph-Token (GRT) faucet site or any link where I can buy these testnet.
hammad ali's user avatar
0 votes
0 answers
20 views

How can I get strategy of the Linea-Goerli with the vault address?

Like in mantle, we can get the strategy and the contract by navigating to the site https://explorer.mantle.xyz/address/{} How can I get the same for the line I have tried the https://explorer.goerli....
Lakshay khattar's user avatar
0 votes
0 answers
22 views

How to perform a beacon deposit for a new validator in a Custom Testnet?

I am trying to add a validator to an already running testnet How can i make a beacon deposit, to allow that validator to start staking / validating blocks on the same testnet ? Help appreciated!
Muhammad Yasir's user avatar
1 vote
1 answer
57 views

How to activate a validator in a local testnet?

I am trying to add a validator to my local testnet, however the validator keeps giving the same message ( awaiting activation ); For context, the network topology is as follows; There are two ...
Muhammad Yasir's user avatar
0 votes
0 answers
63 views

Prysm : Issue while onboarding new Validators in Testnet

I am trying to setup Devnet in my machine and things are smooth so far. But when I am trying to onboard new validators, it is Waiting for deposit to be observed by beacon node" prefix=validator ...
iappmaker's user avatar
  • 813
0 votes
1 answer
487 views

HOW TO SET UP TRUFFLE CONFIGURATIONS FOR SEPOLIA ETH

** HOW TO SET UP TRUFFLE CONFIGURATIONS FOR SEPOLIA ETH ** I want to know how to set up my config on truffle to be able to deploy my contract on the eth testnet, I already have an infura api key
Emkiddo Skits's user avatar
0 votes
2 answers
3k views

USDT on Sepolia

I'm currently working on testing ERC-20 transactions on the Sepolia testnet and I'm looking to obtain some USDT for this purpose. Could anyone guide me on how to acquire USDT on Sepolia? I've been ...
Somaye Ebrahimi's user avatar
0 votes
0 answers
41 views

Polygon Mumbai Testnet Explorer: read/write contract error

One of the ABI in my contract is shown below. I found out the input for _suitableProductIDss (string[][]) triggered error when I was trying to write [[SCSG1]] into it in Mumbai Testnet Explorer, the ...
dewchan's user avatar
0 votes
0 answers
197 views

Is there a V2 Router for BaseSwap DEX on the Base Chain Testnet?

I am currently working with the BaseSwap decentralized exchange that runs on the Base Chain. I noticed that they have a router for facilitating transactions on mainnet, but I am particularly ...
Jenny From the Block's user avatar
0 votes
4 answers
203 views

Seeking testnet and wallet for students to learn how to use ethereum?

I have a class on finance and have been trying to make it relatively painless for students to learn about getting a wallet, Ethereum address, learn about transaction hash and block, etc. Unfortunately ...
artiefufkin's user avatar
1 vote
1 answer
92 views

NFT Not Show In Opensea Collection Profile

I am trying to buld ERC721 to my NFT. But the NFT not show in NFT opensea profile Collection. I am using openzeppelin library and the basic project is using Hashlib labs. The skenario is when i mint ...
angga danar's user avatar
0 votes
1 answer
740 views

jsonrpc":"2.0","error":"[ethjs-query] while formatting outputs from RPC '"transaction underpriced\"

I'm trying to deploy a BEP20 contract using Remix on Binance TestNet, but I keep getting this error: creation of TToken errored: Returned error: {"jsonrpc":"2.0","error":&...
mazagngy's user avatar
1 vote
1 answer
217 views

How do I fix Error: Deployment Failed on ganache?

I am encountering this error while deploying my smart contract on the Ganache blockchain, can anyone help me fix it? Error: *** Deployment Failed *** "Coffee" hit an invalid opcode while ...
kaustubh sharma's user avatar
0 votes
3 answers
935 views

Sepolia Testnet

I am using Sepolia testnet to work and develop my dapp. I created the contract and deployed to the Sepolia network. I will be making several transactions in this similar manner. I know it is possible ...
111Seven's user avatar
-1 votes
1 answer
54 views

how can i deploy my Dapp?

what if I have deployed my smart contract on truffle and used ganache to deploy the same and i havn't used any test network, so if I go to deploy it on netlify to demonstrate the same will it work??
kaustubh sharma's user avatar
0 votes
1 answer
492 views

Sushiswap Router Contract Address on Sepolia Public Testnet?

I'm trying to interact with Sushiswap on the Sepolia public testnet, and I already found the Uniswap Router contract address. However, I can't seem to locate the Sushiswap Router contract address for ...
Ibrahim Khalil's user avatar
2 votes
1 answer
604 views

Error with Sepolia Faucet - ReCAPTCHA not Recognized Despite Correct Completion

I am facing an issue while using the Sepolia Faucet provided by Alchemy through sepoliafaucet.com. Every time I try to access the faucet and complete the ReCAPTCHA, I encounter the error message, &...
Ibrahim Khalil's user avatar
0 votes
0 answers
2k views

How do I add Sepolia Testnet to Trust wallet

I linked my Trust wallet to Chainlist to 'get access' to Sepolia Testnet. And I transferred some Sepolia ETH to the address, but it is yet to reflect in Trust, despite etherscan confirming this ...
Chibyke_py's user avatar
0 votes
1 answer
13 views

How can I get randomNumber from chainlinkVRF?

this is RandomNumberConsumer.sol // SPDX-License-Identifier: MIT pragma solidity ^0.8.7; import "@chainlink/contracts/src/v0.8/VRFConsumerBase.sol"; contract RandomNumberConsumer is ...
Tomas Wolfgang's user avatar
0 votes
1 answer
13 views

Why Cic testnet transaction cost is high?

I was testing my smart contract on cic testnet but the transaction cost for a simple transaction like updating the string was asked for 65 cict how to resolve this issue?
Anwar's user avatar
  • 51
1 vote
3 answers
1k views

Using Goerly Testnet for development requires 0.001eth in wallet [duplicate]

Using Goerly Testnet for development requires 0.001eth already existing in the wallet. I tried alchemy's and quicknode's sites but same requirement. Which faucet should i use for my first O.OO1 eth ...
Vocci's user avatar
  • 23
0 votes
1 answer
263 views

Subgraph indexed network is missing from manifest

i tried to deploy many times and got this errors messages. ✖️ Failed to deploy to Graph node https://api.thegraph.com/deploy/: subgraph failure::Subgraph indexed network is missing from manifest
Horus Cash's user avatar
0 votes
2 answers
965 views

How can I bridge ETH to zkEVM Testnet?

I want to get some ETH in Polygon zkEVM Testnet network. How can I bridge it and from which network should I do it?
Falcon Stakepool's user avatar
0 votes
0 answers
21 views

add faucet to metamask failed [duplicate]

I am using meta mask for the second time and I wanted to add some test ethers in my meta mask from test ether faucet in order to deploy my own smart contract implemented using remix. Unfortunately, ...
RAHMA TRABELSI's user avatar
0 votes
2 answers
4k views

Ethereum test network for Uniswap

I need to test my contract with Uniswap and I'm facing difficulty in using test networks of Ethereum. For example, the Goerli faucet wants us to buy actual Ethereum on the mainnet. Besides that, is ...
Fariha Abbasi's user avatar
0 votes
1 answer
2k views

Loolong for tusdt faucet Sepolia [closed]

Found only one but it is not working . Can anyone please point out a working one. Thank you
Shah's user avatar
  • 1
1 vote
1 answer
336 views

How to convert testnet BTC to WBTC?

How can I convert my test BTC to WBTC so that I can then communicate with EVM Ethereum?? Should I use a particular DEX over others or are there methods that already exist in the bitcoin libraries out ...
AlexCav's user avatar
  • 51
2 votes
0 answers
74 views

How to build a ethereum private chain after the Merge?

I want the build an ethereum private chain that similars toward the exsiting ethereum network. But i find there were not any documents about how to build the ethereum private chain after the Merge
frystal's user avatar
  • 21
0 votes
1 answer
127 views

TestNet ETH Disappear after receiving it immediately

Whenever I get any Testnets (Sepolia or Goerli) to my MetaMask Its Immediately transferred away from my wallet to another address 0x000ED96F3C5636BBB1A4fa59B96C2CCD042e5000 without any of my ...
Salma Sameer's user avatar
2 votes
2 answers
4k views

Where can Developers get Sepolia Testnet ETH? [duplicate]

Where can web3 developers get free Sepolia Testnet ETH to use in their development process?
anataliocs's user avatar
1 vote
0 answers
21 views

Creating a local ETH2 environment for testing L2 solutions

I'm developing a Layer 2 network that runs on top of current Ethereum and has to do a lot with staking. run controlled local testnet incl beacon and staking. deploy smart contracts What is the ...
yosher lutski's user avatar
0 votes
1 answer
129 views

How To Do Bulk Transaction with USDC(AVAX)

I am trying to make a bulk transaction using USDC (AVAX). I saw that it was recommended to use transaction builder. But the directions to use it was unclear to me. i was hoping that someone could help ...
Raphael's user avatar
0 votes
1 answer
107 views

What is the size of Polygon Mumbai chain in GB?

I want to know the total size of the chain because I am running a The Graph Node on an EC2 instance and I have to allocate resources to that.
Falcon Stakepool's user avatar
2 votes
1 answer
98 views

Metamask Unity Plugin shows different Ethereum amount for user confirmation on Metamask mobile wallet than that requested by Unity

I am integrating the MetaMask Unity Plugin given here: https://assetstore.unity.com/packages/decentralization/infrastructure/metamask-246786 and followed the docs provided here: https://c0f4f41c-2f55-...
Naruto Ujumaki's user avatar

1
2 3 4 5
13