Questions tagged [testnets]
testnets are an alternative blockchains to be used for testing and development with no value attached
401
questions
0
votes
0answers
10 views
local testnet mining error
my genesis.json file
{
"config": {
"chainId": 271,
"homesteadBlock": 0,
"eip155Block": 0,
"eip158Block": 0
},
"nonce": "0x0000000000000042",
"...
0
votes
0answers
20 views
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 ...
4
votes
3answers
269 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 ...
1
vote
1answer
35 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 ...
1
vote
1answer
30 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 ...
0
votes
2answers
31 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 ...
0
votes
1answer
15 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?
1
vote
0answers
66 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 ...
0
votes
1answer
14 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?
0
votes
0answers
19 views
What Android App has block explorer functionality for Ethereum testnet?
I need to interact with my web app that has blockchain functionality and it creates wallets on paper (pls dont ask why). It's using ropsten testnet. Is there an Android app that I can easily scan the ...
0
votes
2answers
35 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?
1
vote
2answers
309 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?
0
votes
1answer
60 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 ...
0
votes
1answer
27 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 ...
2
votes
0answers
268 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
0
votes
1answer
92 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.
0
votes
0answers
40 views
Building Prysm on Windows
I'm currently following the steps to build Prysm from the instructions on Github: https://github.com/prysmaticlabs/prysm
At the step for building the beacon chain I ran this command:
bazel build //...
1
vote
1answer
257 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 ...
0
votes
1answer
23 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 ...
3
votes
1answer
136 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 ...
0
votes
0answers
29 views
what is the standard server configuration for hosting own kovan validator node?
What is the recommended hardware specifications ( CPU, RAM, Network ) to host my own validation node for kovan testnet and what is the average data transfer out from validation node?
2
votes
0answers
145 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 ...
0
votes
2answers
33 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. ...
0
votes
0answers
25 views
IPFS - file stored by all users
Suppose one or many users used my fully decentralized app to store different files on IPFS. How can I keep track of all file hashes by using smart contracts?
1
vote
3answers
45 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 ...
2
votes
1answer
42 views
How can you deploy a contract using the non-interactive mode?
I have a contract written in remix, but I am trying to deploy it using Geth's non-interactive mode using geth attach ipc:<path> -exec "<contract deploy info>".
When I am in interactive ...
1
vote
1answer
84 views
is the gas price on test net equal to main net?
I have 1 contract deploying on test net, let say it use 300,000 gas for executing 1 function.
On main net, this contract will cost 300,000 gas per function also?
Thanks
1
vote
1answer
72 views
Most stable / reliable testnet
I hope this question isn't too vague, but it would really help me to get some advice on from the community on this subject.
Which testnet is the most suitable for testing of a dapp? Do testnet ...
1
vote
0answers
81 views
Is it possible to set miner reward on Geth clique?
I have a private network set up with ethereum & PoA clique consensus.
Using in geth client
miner.setEtherbase(eth.coinbase)
on miner nodes, doesn't seems to work.
Inspecting in block explorer ...
1
vote
1answer
152 views
How to set sealers in genesis block extradata for a Clique PoA network?
What is the format of the Clique PoA genesis extradata field to set up the sealers?
This is an example:
"extraData": "...
1
vote
0answers
93 views
Error in syncing of Ropsten testnet on geth node
I am using a geth node to sync with the ropsten testnet . For the last few days I have been encountering the following error frequently
Error: invalid gas used (remote: 7987157 local: 7897475)
All ...
0
votes
1answer
56 views
Problems with Geth 1.8.19-stable
I am trying to add static peers by static-nodes.json file but with this version it does not work. What is the way to do it ?
If I add peers with admin.addPeer() it works, but if I am using --syncmode ...
0
votes
1answer
31 views
Is there multiple chains of block in ethereum network?
Since blockchain is a chain of blocks,
In ethereum,
1. is there only one chain of blocks
2. are there multiple chains of blocks.
0
votes
1answer
25 views
Problem peers in a cluster [SOLVED]
I have a cluster with 2 nodes and I would like to create a testnet by connecting them with geth.
I am using the following command:
Node1:
geth --datadir node1 --port 30302 --rpc --rpcport 3003 --...
0
votes
1answer
54 views
What is the beginning nonce on the Rinkeby Testnet?
I know that the nonce is representative of how many transfers an account has made and is 0 at the start on the mainnet. However, on testnets, such as the now decommissioned Morden where it was 2^20 I ...
2
votes
0answers
83 views
geth : Unable to fully sync to Rinkeby
I am trying to synchronise geth with Rinkeby node but when around 100 or so block left, it keep on dropping the peer and doesnot sync fully with the test net below are the screenshot for the same.
1
vote
0answers
122 views
Connection of web3 with Ropsten
How do I connect my web3 to ropsten network. I know how to pass the url of ropsten netwrok in web3 instance in my script tag but when i try to to console.log(web3.eth.defaultaccount) it gives me ...
1
vote
1answer
89 views
No data is deployed on the contract address!
I add a new Smart Contract and create it, but I get the following bug. Why is the contract not created? I take the etherium wallet and the ropsten testnetwork
The first picture include the constructor....
0
votes
1answer
143 views
How to setup Testnet in Windows?
What are the commands for windows power shell to make a testnet. I require steps to set up testnet in private network in Windows OS.
1
vote
1answer
49 views
How to test time-dependent contracts on the mainnet?
In Ganache, I use evm_mine to simulate the passage of time.
Assuming block times are accurate enough, what are the best practices to test some contracts on the mainnet or a testnet which depend on ...
0
votes
1answer
70 views
How to limit latest block in Geth
I need some test Ethereum blockchains for development purposes. I need only part of blocks synced for example, blochain synced from 0 to 10'000`th block, because for example Rinkeby synced in archive/...
0
votes
1answer
412 views
How long does it take to sync Rinkeby network with geth?
I am syncing the Rinkeby network with geth
geth --rinkeby --rpc --rpcapi="personal,eth,network,web3,net" --ipcpath="~/.ethereum/geth.ipc"
When I run
eth syncing
in geth console, it is showing
{
...
0
votes
1answer
13 views
unable to connect to TestChain by Code
I am new at Ethereum and intended to connect to a test chain by c#. my code runs greatly on my old laptop win7, but on newer one Win10 it just waits forever. this is my code. has anyone any idea?
...
0
votes
1answer
212 views
how to call function on Ropsten
I deployed a smart contract to Ropsten testnet I want to call its only public function to test it on the network. How can I do such a thing and where I will see the result?
The TxHash is:
...
1
vote
2answers
560 views
Syncing with Mainnet/Ropsten blockchain
If use gethcommand,then the node starts to sync with Ethereum Mainnet by default.If usegeth --testnet --networkid 3 --datadir <testnetdatapath>,then the node will connect to Ropsten.
How does ...
0
votes
1answer
319 views
Golang binding - call contract method and get its return value or tuple?
Suppose i have contract like:
pragma solidity ^0.4.11;
contract MyToken {
uint256 a;
function SimpleGetter() returns(string) {
return "something";
}
function DoTheGreat(address _to) ...
0
votes
3answers
367 views
How to create a faucet for my Ethereum Private network as a clone of https://faucet.ropsten.be/
I have set up a Ethereum Network with 5 nodes on azure. Now I want to make a faucet like https://faucet.ropsten.be/ .Where anyone can go and put there wallet address and can get my network testether. ...
0
votes
1answer
258 views
No etherbase set and no accounts found as default
I am getting: "No etherbase set and no accounts found as default"
when trying to sync my node using:
geth --testnet --rpc --rpcapi db,eth,net,web3,personal --cache=1024 --rpcport 8545 --rpcaddr 127....
2
votes
1answer
209 views
Getting large amount of ropsten ether
I want to get about 150000 ropsten ether for testing. Is there any way to get it? I've seen some faucet websites but they have limitations.
2
votes
1answer
636 views
Using Python to invoke smart contract [duplicate]
I'm currently writing a thesis on a simulation of a peer to peer electricity market. The payments between the agents of the simulation would be settled through an Eth smart contract. I would like to ...
