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Questions tagged [testnets]

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

637 questions
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1 answer
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I’m testing a simple smart contract on Sepolia where a user deposits ETH, and it automatically swaps that ETH to USDC using the Uniswap V3 Router. However, whenever I call my deposit() function with 0....
Akula Yashwanth's user avatar
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2 votes
2 answers
55 views

I have a question about RPCs and networks in Metamask. If I am connected to a different network (for example, a custom or virtual testnet RPC) and then switch to the Ethereum Mainnet in Metamask, will ...
peterflash's user avatar
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1 answer
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I’m a beginner in blockchain and am currently working on an Android project. I need approximately 10 Sepolia ETH. My address - 0x23f17f277d98b6d02a9607D065eA6A81e4F53102
PRASHANT SINGH's user avatar
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1 vote
1 answer
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i have an onlick function that adds my deployed token to the user's metamask wallet but when the button is clicked metamask returns an RPC Error saying 'Cannot destructure property 'tokenId' of 'r' as ...
Victor okolie's user avatar
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0 answers
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I'm just getting started with blockchain development and I'm trying to send my very first transaction on the Sepolia testnet. I tried using the Chainlink faucet, but it says I need to hold at least 1 ...
shpinozza's user avatar
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1 vote
0 answers
177 views

Fistly when I open MetaMask, it shows "conneting to sepolia testnet network" and loading sign for a long time, then it shows--"We can't connect to sepolia". Then I have to switch ...
Shrestha Das's user avatar
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0 votes
0 answers
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I need MATIC to test my contract on Polygon Amoy but I cannot find any free MATIC. Can anyone send me some Amoy Testnet MATIC? My wallet:0x72a468C77E9dF8D97854B9409b913B83691a5Bb1
Tagh's user avatar
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1 answer
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how do i bridge Weth or usdc from sepolia eth to monad testnet? Here's the supported cross chain transfers protocols I have tried wormhole tutorial to wrap eth and send to monad with the following ...
Ryan283's user avatar
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4 votes
1 answer
197 views

I have been working with Tornado Cash on the Goerli testnet, but since Goerli is now deprecated, I need to get it working on Sepolia instead. I’m wondering if it’s a simple switch or if there are ...
allexj's user avatar
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0 votes
1 answer
64 views

I am facing an issue running my stagging test below: const { getNamedAccounts, deployments, ethers } = require("hardhat"); const { developmentChains, networkConfig, } = require("../....
Abdul Ahad's user avatar
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1 answer
130 views

I'm currently experimenting with deploying an ERC-20 token on the Sepolia testnet for educational purposes. Could anyone kindly send 0.001+ Sepolia ETH to my wallet? I'd greatly appreciate it! Wallet: ...
Eugene Chetty's user avatar
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I’m currently working on a blockchain project and testing on the Sepolia Testnet. I’ve tried using faucets, but some require a minimum balance, which I currently don’t have. Could someone kindly send ...
Shailesh agrawal's user avatar
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2 answers
56 views

Theoretically , if the contracts can be tested in l1 testnets like Ethereum sepolia , why do l2 testnet chains exist ?
Harigovind M G's user avatar
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0 answers
44 views

Screenshot is shown below. 0.5 ETH I've got successfully, but I'm not getting the links. CAn anyone please help me with this.
Vishwajeet Singh's user avatar
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0 votes
1 answer
162 views

Trying to deploy a contract on zksync sepolia testnet. My Metamask network is zksync sepolia testnet too. I got the following error: Error: "underlying network changed (event=\"changed\"...
ToussaintL's user avatar
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