Questions tagged [testnets]

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

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Pending Transactions [closed]

I am reaching out to the Ethereum community hoping to get better understanding of what my fiancé created with his platform. When we log into BTC.com (Blockchain explorer) and Etherscan.com we see ...
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1answer
124 views

Do all Ethereum networks return the revert reasons as a “message” field?

I noticed that reverted transactions on Kovan don't include the revert reason. I'm getting the generic "Reverted"/ "VM execution error." Is Koval special in this regard? I know ...
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Can i sell my testnet tokens

I have some testnet tokens Eth,btc,litecoin,I need to know how can I sell this can we swap this to mainnet any site to do this
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Cannot get faucet for rinkeby [duplicate]

whenever I try to get faucet for the rinkeby test network, I get a message : "no address was found to fund", I had tried many accounts uselessly.
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1answer
42 views

Deploy to testnet with brownie

I'm looking to deploy some code to the kovan testnet with Brownie. However I keep getting an error accessing accounts. Here is the command I'm running: brownie run scripts/deploy_price_consumer_v3.py -...
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1answer
31 views

execution reverted: DepositContract: reconstructed DepositData does not match supplied deposit_data_root

I am getting this error when deploying Goerli's Medalla Beacon Contract through Remix. execution reverted: DepositContract: reconstructed DepositData does not match supplied deposit_data_root input (...
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Ropsten Node finally synchronized after 3 days: why a blockchain testnet should be so difficult?

I have started a new Ropsten Node running on a Pi4 4GB. Here is the relevant information for those who might want to start a new Ropsten Node: more than 3 day syncing $ geth --ropsten --datadir /mnt/...
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Can we deploy old deployed NFT contract to Ethereum 2.0?

I have already deployed contract on Ethereum. Now I want to deploy it on Ethereum 2.0, is it possible? According to some resources Ethereum 2.0 does not support for smart contract deployment. Thank ...
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2answers
51 views

How do I configure a browser to resolve ENS names from a testnet?

I want to preview a major revision of my Dwebsite before I update the IPFS CID to which the mainnet ENS name resolves; this requires locally resolvable names so hyperlinks and resource references work ...
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How to change contract interactions to kovan?

I am using newest web3 v1.2.4 const Contract = require('web3-eth-contract'); Contract.setProvider(INFURA_KOVAN_HTTPS); const contract = new Contract(CONTRACT_ABI, CONTRACT_ADDR); I have that code and ...
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1answer
43 views

How to handle Ropsten's smart contracts with Truffle?

I work with Truffle, Metamask, and Windows Powershell. I deployed my smart contract to Ropsten with Truffle by the below command in Powershell: truffle migrate --network ropsten Now, I need to ...
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1answer
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What is the purpose of the Zinken Ethereum 2.0 testnet?

The Spadina testnet launched less than 2 days ago. What is the purpose of the Zinken testnet? What is being covered that was not covered in Spadina? Related: What are the Ethereum 2.0 testnets?
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What are the Ethereum 2.0 testnets?

There are many different Ethereum 2.0 testnets, among them Medalla Spadina Zinken What are the differences and what is their purpose?
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Howto check sync with kovan testnet is complete or not?

I am trying to sync with Kovan testnet, docker run --name eth -p 8546:8546 -v ~/ws-002-chainlink/ws00-docker-geth-ropsten:/geth -it ethereum/client-go:stable --testnet --syncmode light --ws --wsaddr 0....
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1answer
35 views

Is there any advantage of using localhost as testnet in Metamask?

I am using Metamask with ganache to deploy my Dapp, i use localhost testnet depend on some tutorials i followed it but really i don't know if it has any advantages comparing with other testnets or no? ...
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What is the expected daily egress traffic from full Testnet node

I have a full testnet node running on GCP with Parity. After about a week of having it fully synced, the egress traffic from the server spiked substantially and started sending out 250GB per day to ...
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1answer
34 views

How can I obtain testnet REP for use on Kovan?

I would like to test the new version of Augur on the Kovan testnet. Where can I obtain testnet REP in order to do so? I found https://faucet.kovan.network/ for Kovan Ether (KETH) but cannot find ...
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1answer
46 views

net.peerCount is zero: Two miners are not connected

I'm trying to build a local private blockchain of Ethereum in my own PC using Geth v1.9.15-stable-0f77f34b. I have installed Geth in a virtual machine with Ubuntu 18.04 OS using VMware Workstation Pro....
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Lightweight Ethereum client for Android and IOS

Are there any available Lightweight version of Geth or Parity client on Android or IOS in order to avoid using Infura service when accessing blockchain form a mobile app?
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1answer
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Automate faucet Ether request to access Ethereum Testnet from a mobile DApp

I want to develop a mobile DApp to interact with a smart contract deployed in a testnet (free of charges). The mobile DApp is designated for public users. The DApp needs first to setup a local wallet ...
3
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1answer
60 views

What caused the forks in the Schlesi testnet?

The Schlesi testnet was the first multiclient testnet for ETH2 clients. Lighthouse, Prysm, Teku were in consensus before it forked. What were the causes of the forks? Is there a technical post ...
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Deploying App on Ropsten or any Test Network

I have a web3.js application which uses truffle and interacts with smart contracts deployed on Ganache. How do I deploy my smart contract on a Test Network and interact with it through my application?
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1answer
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How to handle events for testnet and mainnet?

I know how to handle events using personalised blockchain using ganache, can anyone tell me how to handle events in Kovan,rinkeby testnets?
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1answer
733 views

Recommended 64-bit OS for ETH 2.0 node on Raspberry Pi 4B

I would like to participate in one of the current ETH 2.0 testnet with my Raspberry Pi 4B (ARM64 processor, 4GB RAM) and 500 GB USB 3.1 SSD. Performance-wise, this is possible and I run an ETH 1.0 ...
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Revalidated then Removed node

I have set up a private geth network with a bootnode and a single signer node. I start the bootnode first then the signer node. The signer node starts mining (using PoA) but in the bootnode logs it ...
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2answers
227 views

How to enhance list of accounts for the Truffle tests to run against Ropsten testnet

I am working on the my contracts testing scripts. But I want to run tests not on the local TestRPC or Ganache but in the Ropsten testnet. How can I predefine a list of accounts (private keys and ...
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1answer
74 views

How would a chain specification for a beacon chain look like?

Do Ethereum 2.0 clients, such as Lighthouse, Nimbus, or Prysm implement any standard on defining different chain specifications or genesis blocks comparable to how legacy Ethereum clients do? Would ...
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1answer
335 views

What does the beacon chain deposit contract ceremony entail?

To bootstrap an Ethereum 2.0 beacon chain, the deposit contract has to be deployed on the proof-of-work legacy chain. For the beacon-chain mainnet, we are talking about a ceremony potentially ...
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1answer
52 views

Can I make an ethereum token that runs a certain function every 15 seconds?

I have a rinkeby token, and I wanted to add "merged mining" when someone mines a block, they get awarded 0.25 of that token. function issueBlockReward() { balanceOf[block.coinbase] += 0.25; The code ...
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1answer
219 views

eth.getBalance(eth.accounts[0]) Shows me 0 balance though my syncing is still Running [duplicate]

I am using geth on windows with 1.9.10 version. I used geth --rinkeby --rpc --rpcapi="personal,eth,network,web3,net" command for launch my geth. I am on the Rinkeby testnet, i already transfer 3 ...
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When to stop importing new chain segments from Rinkeby testnet?

I am using geth to sync up with the Rinkeby testnet using the command: geth --rinkeby --syncmode "fast". First it downloaded the blocks, then account states, and now new chain segments are being ...
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3answers
287 views

Do testnets ever merge with mainnets?

Does a testnet ever merge with the mainnet? In other words, if I have ETH on a testnet, will I ever have actual ETH or do testnets remain for testing forever? I Googled in multiple ways but could ...
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1answer
146 views

Difference between Kovan and Rinkeby? [duplicate]

I understand that both the Rinkeby and Kovan testnets employ the Proof of Authority (PoA) consensus algorithms. I also understand how PoA works. However, I still dont understand how Kovan and Rinkeby ...
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1answer
87 views

What is the best way to deploy and test smart contracts on multiple machines?

I have recently started developement on Ethereum and the concepts are pretty much new to me. I need to test event emitting/listening on multiple machines for my contract. For the same, I have tried ...
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2answers
72 views

Create fastest possible localhost Ethereum test net

Is there an Ethereum test blockchain (similar to Ganache) which prioritises calculating transactions and creating a local blockchain 'db' as quickly as possible? Requirements: - Calculate ...
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1answer
25 views

How to get exchange rates for testnets?

I would like to see what a PETH on Kovan is worth in DAI. How can you look for exchange rates on testnets?
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190 views

How to get DAI using Web3.js

I'm building a Web3 app and I'm trying it out on the Kovan testnet. I'm trying to get some DAI. As far as I understand it the way to get DAI is to: Exchange ETH for WETH. Use Sai Tub contract to open ...
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1answer
148 views

How can I debug a my Solidity smart contract with a GUI?

Is there any way to debug a Solidity smart contract with a GUI, like remix? How can I do it for both testnets and mainnet?
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2answers
53 views

Rinkeby not producing blocks

transactions are not getting mined on rinkeby testnet and last block time is almost 2 hours ago. How did such things happen in a decentralised network?
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2answers
891 views

Is there any testnet faucet for ETC Ethereum Classic Coin?

Not able to get testing ETC from available faucet https://etcfaucet.info/, is there any other faucet or way to get ETC for tesing?
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1answer
275 views

How to connect to Rinkeby without using Geth / Parity?

First let me explain my development environment. I am using Jupyter Notebook to play around with the Web3.py front-end code and Remix for the Solidity smart contract code. I am using the Metamask ...
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1answer
46 views

Set up hardforks parameters in parity JSON chain spec file for private network

I want to set up a private network for tests using parity, which will function in the same way as the current mainnet, but with very low block mining complexity. Is Is it true that for this I need to ...
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2answers
3k views

Does Rinkeby have a faucet where I can fill a wallet with DAI?

I'm looking to use a testnet to test an application. I know I can get ether, but is there an easy way I could convert it to Dai? Thanks
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1answer
248 views

Mobile wallets for test eth?

Can anyone suggest mobile wallets (both IOS and Andriod) that supports testnet Eth? Jaxx used to (or at least the IOS version used to), but doesn't look as though it does now.
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1answer
731 views

Which network does truffle use for testing?

I have a network 'foo' that is configured inside truffle.js. Running my tests works just fine truffle test --network foo ./test/*.js then I realized I forgot to start 'foo'. To confirm this running ...
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1answer
54 views

Gas estimation failed when calling the play function

I am trying to deploy this contract on the test network and am able to do so successfully but when i try to call the play function i get gas estimation error and can do nothing further. I am using ...
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1answer
505 views

What is the purpose of Görli Testnet?

Görli testnet is started with the goal of being widely usable across all client implementations supporting Clique PoA engine (EIP-225) (see Comparison of the different TestNets) Since it exists ...
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351 views

Signed transaction vanishing from testnet (Kovan & Rinkeby)

I've been attempting to broadcast transactions to both Kovan & Rinkeby, I'm building and signing them offline and using the Etherscan API to broadcast the signed transactions. I see them in the ...
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2answers
42 views

Is it possible to use MetaMask for a private consortium on Ethereum?

Assuming we create a private consortium chain over Ethereum and we want to use MetaMask for storing the keys and signing transactions to send the tokens belonging to this private consortium. ...
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3answers
79 views

Ether for learning ethereum

Crypto concurrency is not legal in India. If a developer who is citizen of India can learn and develop ethereum applications without buying Ether? If yes how ? I just learn that there is something ...

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