Questions tagged [testnets]

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

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Is Uniswap do not allow to test swap on testnet mode?

I am testing my smart contract on goerli testnet, everything is working, but after i complete adding LP, i want to test whether it is able to swap, but system keep appear "Insufficient liquidity ...
yaoyao's user avatar
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1 answer
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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
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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 ...
Antonio Irizarry's user avatar
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How NFT Data is Displayed on EtherScan or from where it fetches it

I want to know how the NFT Data is displayed on etherscan page , from where the it fetches Data. cause if it fetches from transaction , then in my transaction all details are there Like id , and ...
Bhushan Dhiware's user avatar
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1 answer
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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
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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
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1 answer
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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
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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
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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
0 answers
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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
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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
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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
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2 answers
676 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
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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
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101 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
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4 answers
120 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
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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
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1 answer
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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
136 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
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2 answers
585 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
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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
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0 answers
282 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
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0 answers
284 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
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1 answer
356 views

"Uniswap: Insufficient liquidity for this trade." when adding liquidity through contract

I am trying to create an Uniswap v2 liquidity pool for my token with custom tax fees (0x0AeE891A17e570Eba92A9138dB45DA2ecFAd7082) on Sepolia. To create the pool and add liquidity the function ...
root's user avatar
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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
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1 answer
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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
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1 answer
11 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
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1 vote
3 answers
663 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
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1 answer
248 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
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2 answers
777 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
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0 answers
15 views

Request testnet ETH and LINK tokens for the Sepolia testnet [duplicate]

I am trying to get a sepolia test link from faucets.chain.link, I have inserted my wallet address, I have selected the Request type (0.1Eth), I have verified that i am human; But the send request ...
ndifreke Etukudo's user avatar
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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
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2 answers
3k 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
1k 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
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1 vote
1 answer
238 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
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2 votes
0 answers
70 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
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1 answer
103 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
1 vote
2 answers
3k 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
20 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
99 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
101 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
95 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 vote
1 answer
642 views

Transfer eth from one goerli account to another

So, I sent from one goerli testnet account to another: https://goerli.etherscan.io/tx/0xa1a6a53ef3b7e54b5dd58e1f6983b0ab06bf6a2301ba2155e869ce1a77347b9e But the eth did not show up on the intended ...
EmilyJ's user avatar
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0 votes
1 answer
709 views

Deploy to Sepolia Infura Foundry: Solidity Scripting

I'm trying to deploy my contract with Foundry Solidity Scripting to Infura on the Seoplia test net. But Im getting this weird issue that appears to be related to the Infura API Key (formerly Project ...
currenthandle's user avatar
0 votes
1 answer
26 views

Remix not connecting to testrpc

I am trying to deploy a smart contract on testrpc using External Http Provider which I have learnt has replace web3 provider. However when I try to run it. It says 'Error while connecting to the ...
luko's user avatar
  • 1
5 votes
1 answer
3k views

Free Goerli testETH? Why is there a Goerli faucet shortage [duplicate]

Anyone else struggling to get Goerli Ethereum? Feel free to use Alchemy's free goerli faucet - goerlifaucet.com. You can use this faucet to get more testETH every day. We created it because we ...
Alchemy Devs's user avatar
0 votes
1 answer
793 views

i experienced a "code=UNSUPPORTED_OPERATION"-error while learning how to code

Error: cannot override "wertgesendet" (operation="overrides", overrides=["wertgesendet"], code=UNSUPPORTED_OPERATION, version=contracts/5.5.0) guys i am receiving this ...
nazo beyli's user avatar
0 votes
2 answers
221 views

Where to get testnet Eth? [duplicate]

Where do you get testnet Eth now that Ethereum has moved to POS? All the faucets I used to use no longer work.
John5544's user avatar
0 votes
1 answer
190 views

Deploy contract to goerli infuria without signing the transaction

Is there a way to deploy a contract on goerli infuria, using web3.js and metamask so I don't have to sign the transaction, or is it possible to use metamask to sign it, without having to provide the ...
Daniel Reed's user avatar
0 votes
2 answers
129 views

Is it possible to use zkSync in Polygon Mumbai?

I am setting up a project using zkSync and I am seeing that, in the hardhat.config.ts file, the supported network is zkSyncTestnet. hardhat.config.ts import "@matterlabs/hardhat-zksync-deploy&...
Falcon Stakepool's user avatar

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