Questions tagged [testnets]
testnets are an alternative blockchains to be used for testing and development with no value attached
2
votes
1answer
20 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
16 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
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0answers
23 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
23 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
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0answers
21 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
37 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
27 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
14 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
29 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
21 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 ...
0
votes
0answers
45 views
How to set sealers in extradata genesis block in PoA?
Which is the sintaxis to set up the sealers in extradata field?
This is an example:
"extraData": "...
0
votes
0answers
48 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
41 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
22 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
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0answers
18 views
Get tx/s in a local testnet
I am using geth to create my local testnet.
How can I get the tx/s in my testnet?
0
votes
1answer
22 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
36 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
58 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
54 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
59 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
74 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
35 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
54 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
227 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
9 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
77 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
268 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
163 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
131 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
136 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
169 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
375 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 ...
6
votes
2answers
389 views
Is it possible to use “Oraclize” on a testnets such as “Ropsten” or “Kovan” or “Rinkeby” or even local blockchain such as “TestRPC”?
Is it possible to use Oraclize on a testnet such as "Ropsten" or "Kovan" or "Rinkeby" or even local blockchain such as "TestRPC" ?
0
votes
1answer
127 views
Why is the different “highest block” of --network id 3 and --testnet?
I think both of --network id 3 and --testnet mean to the Ropsten network.
But, The result of "eth.syncing" differ from each.
--testnet result "highestBlock: 3852529"
$ geth --testnet console 2>&...
0
votes
1answer
30 views
Launch more than one node connected to Rinkeby from the same machine (change the port doesnt work)
I would like to know if it is possible to launch more than one node connected to Rinkeby from the same machine through Geth and Mist.
In a local testnet, it is possible to do it changing the --port ...
0
votes
1answer
320 views
How to add ICONS to our tokens on test network? [closed]
I have seen several questions about adding icons to the existing Tokens in main net. But is it possible to add icons and other information to tokens on test network ??
((just for testing purpose)...
1
vote
1answer
60 views
How can I use performance data on Rinkeby to project performance data on the Ethereum Mainnet?
I'm testing a DApp on the Rinkeby testnet, and want to know how well it would perform on the mainnet if I deployed it there, specifically how much gas was consumed by the DApp. Is there any way for ...
0
votes
0answers
32 views
Who runs the Rinkeby and Ropsten networks? [duplicate]
What organisation, or entity is responsible for running the Rinkeby PoA test network?
Similarly, who operates and maintains the Ropsten network?
1
vote
1answer
76 views
What is the reason for not just issuing a token on the testnet (e.g. Rinkeby) for your token so that Gas costs are free (Rinkeby ETH from faucet)?
If someone wants a token to be usable and easily transferable between users, without the prohibitive costs of paying for gas every time with real ETH (and thus, money), why not just deploy it on ...
3
votes
1answer
94 views
Is there any lifespan of data on Rinkeby testnet?
I read that there are pre-autorized nodes which creates blocks on rinkeby testnet.
If developers keep publishing smart contract and do transactions for testing purpose isn't the size of testnet will ...
3
votes
0answers
187 views
how to send transaction with geth running in light mode on testnet
I am having troubles to sendTransaction with geth running in light mode.
Startup:
geth --testnet --syncmode "light" --rpc --rpcport 10001 --rpccorsdomain "*" --rpcaddr 127.0.0.1 --datadir /opt/...
0
votes
1answer
363 views
MetaMask cannot connect to “localhost 8545”
When I choose localhost 8545 in MetaMask, apparently it is not able to connect. Please see screen shot:
I tried with several internet connection, however the same result.
Whereas, I can easily ...
0
votes
1answer
42 views
What kind of security measures do Testnets have in place?
Cryptographic work is spent verifying transactions on Ethereum, without which, there would be little to nothing preventing colluding to start a 51% attack or creating false identities to start a Sybil ...
1
vote
1answer
108 views
Possibility of transferring “real funds” and “real ether” on “ testnet ”?
According to THIS ANSWER (by user "eth") :
(1) Testnets are "play money" so that you can try out applications
without spending real money.
And According to THIS WEBSITE :
(2) Tobalaba ...
0
votes
0answers
13 views
Eth on unlocking auto transfers
Facing a weird issue on geth console on my private network.
So, I was trying to unlock an account so that my web3 can access it.
As soon as I unlocked, all my ethers just vanished in seconds.. I could ...
0
votes
0answers
83 views
Is there any Ropsten (or any other testnet) node with whisper enabled?
I am trying the embark framework which has whisper integration. I wanted to deploy the dapp and test it live. If there is one could you let me know the endpoint and port. Thanks :)
0
votes
1answer
73 views
ENS with Smart Contract [duplicate]
Is it possible to assign a name with Ethereum Name Service to a Smart Contract's address on a testnet? I found a description only for personal wallet.
0
votes
1answer
343 views
How do I tell if initial geth sync is done in 'light' mode on testnet
I just installed geth on Windows 10. Then I did the initial sync in light mode on testnet, and my status is as shown on the screenshot below.
I have two questions (related):
How do I tell if the ...
1
vote
2answers
144 views
Execution difference of method call in MainNet vs TestNet
I was looking at the new smart contracts submitted list on Etherscan to pass the afternoon, and I came across this one:
https://etherscan.io/address/0x70bf9df6967dc96156e76cc43b928a7ef02e159a
The ...
1
vote
1answer
182 views
Manual TX over Testnet - Error: exceeds block gas limit
I was trying to follow: https://github.com/ThatOtherZach/Web3-by-Example/wiki/Send-Ether-Transaction to create and broadcast my first transaction on the ethereum testnet rinkeby.
However, I am ...
