185
votes
Accepted
Comparison of the different TestNets
Sepolia
Proof of Work (Ethash)
Best reproduces the current Ethereum production environment (PoW)
Website: https://sepolia.dev/
Resources: https://github.com/goerli/sepolia
Goerli
Proof of Authority ...
- 10.9k
44
votes
Accepted
What is Olympic, Frontier, Morden, Homestead and Ropsten Ethereum blockchain?
Each network version gets a name (id). Here is an overview.
Olympic (0) is also regularly referred to as Ethereum 0.9; it launched early 2015 and was the first public Testnet. Deprecated in mid 2015 ...
- 32.8k
27
votes
Comparison of the different TestNets
There are other (test-)networks as well, as described in this SO answer, copied here with their network id numbers:
0: Olympic, Ethereum public pre-release testnet
2: Morden, the public Ethereum ...
- 452
23
votes
Accepted
Ropsten testnet is under kind of attack? What can we do?
Update - 25th March 2017
Ropsten has been revived!
We are pleased to announce that the Ropsten testnet has been revived!
Thanks to a generous donation of GPU hashpower, the Ropsten chain has
...
- 37.6k
17
votes
how to connect "Kovan" or "Rinkeby" from geth
For rinkeby, just type geth --rinkeby from command prompt and you're in
- 171
9
votes
how to connect "Kovan" or "Rinkeby" from geth
For Kovan:
parity --chain kovan
it won't be possible to connect to Rinkeby with parity, only with geth.
Rinkeby with geth:
geth --rinkeby
- 4,327
8
votes
Accepted
Where can I find test-ether for the Kovan Test Network?
Here's a link to information on faucets for the Kovan testnet.
There are currently four ways listed on the above link to get Kovan testnet ETH:
Icarus Faucet (SMS Verified, Automated)
Request ...
- 11.9k
8
votes
What is Olympic, Frontier, Morden, Homestead and Ropsten Ethereum blockchain?
Frontier is the name of the launch and first release of the live Ethereum network. Frontier is the current Ethereum network. It is described more, as well as the names for upcoming releases, here.
...
eth♦
- 85.1k
8
votes
What is Olympic, Frontier, Morden, Homestead and Ropsten Ethereum blockchain?
Frontier is the name of Etheneum's current release stage. It is for early adopters, experimenters. When it was released, there were no Graphical User Interface available, everything had to be done ...
- 3,018
5
votes
Ropsten testnet is under kind of attack? What can we do?
Ropsten is to be considered dead, and parity launched a Proof of Authority testnet called Kovan.
Read the proposal here: https://github.com/kovan-testnet/proposal
To update your testnet from ropsten ...
- 32.8k
5
votes
Accepted
How to sync Kovan (troubleshooting)sn
Red indicates it's a testnet, that's perfectly fine.
You don't need the kovan specification json anymore. with latest versions, just run parity --chain kovan --no-warp. And the --no-warp flag will ...
- 32.8k
5
votes
truffle deployment - runs out of gas on simple contract
If anyone else is getting the error:
Error encountered, bailing. Network state unknown. Review successful transactions manually.
Error: VM Exception while processing transaction: out of gas
Delete ...
- 5,103
4
votes
how to connect "Kovan" or "Rinkeby" from geth
You have to use either the --chain or --networkid options, depending on your client.
The Kovan network is only available when using the Parity client.
From the Parity --help output:
--chain CHAIN ...
- 37.6k
4
votes
What is Olympic, Frontier, Morden, Homestead and Ropsten Ethereum blockchain?
That´s right. Homestead is the current main network whereas morden is commonly called the 'testnet'. They are both similar beside their content and value. Testnet 'coins' are worthless. While users ...
- 221
4
votes
Ropsten testnet is under kind of attack? What can we do?
If you've sent any transaction in last 48 hours or so, then it's because of the 51% attack on ropsten, which is not resolved yet. Follow the link below:
https://www.reddit.com/r/ethereum/comments/...
- 557
4
votes
Accepted
How to test RPC port for accepting traffic
Any call to methods from https://github.com/paritytech/parity/wiki/JSONRPC-eth-module should work for rpc.
For example requesting the current block number
curl --data '{"method":"eth_blockNumber","...
- 31k
4
votes
Where can I find test-ether for the Kovan Test Network?
Use the gitter app, this is the best way to get ether in Kovan Testnet,
URL: https://gitter.im/kovan-testnet/faucet
Upon going to the above url, post your kovan address to instantly get 5 ether to ...
- 141
4
votes
Accepted
Where to find and how to get Kovan USDC testnet tokens
https://staging.aave.com/#/faucet. You just connect with your Metamask wallet on Kovan testnet and select USD Coin. You will be prompted to accept the metamask transaction and after you will receive ...
- 341
3
votes
Geth or Mist do not sync any more
There's currently (still?) an attack on the Ropsten test network:
Ropsten testnet is under kind of attack? What can we do?
what do I have to save in order to not loose my test accounts ? (i
...
- 37.6k
3
votes
Ropsten testnet is under kind of attack? What can we do?
Check this out ! Kovan to the rescue :) http://www.ibtimes.co.uk/parity-pushes-new-ethereum-testnet-kovan-after-spam-attacks-1609901
- 66
3
votes
How do i transfer from main eth network to kovan test network in metamask?
You can't transfer ETH from one network to another. You can get free ETH on most testnets though, here's a link to information on faucets for the Kovan testnet.
There are currently four ways listed ...
- 11.9k
3
votes
Accepted
How many transactions per second can Kovan or Rinkeby Network handle?
Both Kovan and Rinkeby have a gas limit of ~7 million, which is about 330 regular ETH transfers per block (21,000 gas each). Kovan has a ~4 second blocktime and Rinkeby has a ~15 second blocktime, so ...
- 11.9k
3
votes
Accepted
Is there a decentralized way to intercommunicate between two Ethereum networks?
To communicate between two different networks, you need a bridge of some sorts. The most straightforward bridge is an oracle service which relies data between the chains.
To create a decentralized ...
- 28.9k
3
votes
What is this STF error when trying to use a function in a contract
execution reverted: STF means execution is reverted by require assertion in TransferHelper.safeTransferFrom function.
Here is the code of Uniswap V3 Swap Router https://etherscan.io/address/...
- 291
2
votes
How to connect from Remix to Kovan testnet?
run parity with parity --chain kovan. and then in your endpoint provide http://localhost:8545 or http://127.0.0.1:8545
8545 is the RPC port
- 18.7k
2
votes
Truffle.js and Kovan/Ropsten
As far as I know Kovan is only accessible by running Parity. This repo contains all of the info and instructions on getting Kovan setup along with the config file: https://github.com/kovan-testnet/...
- 171
2
votes
How to sync Kovan (troubleshooting)sn
I am using the latest parity version. In this version we don't need to specify a Kovan config file. Below listed is the way i am starting parity. In this case I am getting KOVAN with red background. ...
- 1,794
2
votes
Ethereum Testnet mobile app wallet
Here's a list of mobile wallets that let you change the network to a testnet (Goerli, Kovan, Rinkeby or Ropsten):
MetaMask Mobile (although you cannot connect to localhost because they only allow ...
- 17.3k
2
votes
Where can I get some Kovan Ethers?
Googling gave me This about Kovan Faucet
There are currently a few different methods of receiving Kovan Ether:
Icarus Faucet (SMS Verified, Automated)
Request Via Gitter (Manually Verified)
Use PoW ...
- 9,663
2
votes
How Much Space is Kovan Network to Download (Oct 2018)
It is 18.7 GB, and it took about 6 hours to download with --no-warp
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Only top scored, non community-wiki answers of a minimum length are eligible