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Questions tagged [testnets]

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

2
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0answers
21 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.
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0answers
28 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
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1answer
27 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....
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0answers
20 views

How to setup basic ethereum network

I have 2-3 PC, of which my "internet" or, "world" consists. How can I recreate ethereum network on those? Eg, I want to mine coin on one and send it to another. Is there a simple guide for creating ...
0
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1answer
22 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.
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1answer
22 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
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1answer
36 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
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1answer
57 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 { ...
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1answer
8 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
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1answer
17 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
97 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
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1answer
54 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) ...
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0answers
26 views

new blocks not appended at the end of chain after restart

I run a private testnet with Geth v1.8.17. At the moment only one node is connected and is constantly mining. Most blocks are empty but some contain transactions. After I let the miner run for a few ...
0
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3answers
49 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. ...
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0answers
16 views

ETHER Not Received On My Account on Rinkeby Testnet [duplicate]

I started a local node connected to the Rinkeby testnet... geth --rinkeby --rpc --rpcapi='personal,eth,network,web3,net' ... and then attached the geth console: geth --datadir=%HOMEPATH%/.rinkeby ...
0
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1answer
52 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
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1answer
107 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
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1answer
111 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
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2answers
266 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
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1answer
89 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
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1answer
26 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 ...
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0answers
16 views

Is there any way to simulate the Ethereum mainnet gas price for a Dapp? [duplicate]

I'm currently developing a Dapp, and I've tested it on the Rinkeby testnet. Is there any way for me to figure out the ideal gas price on the mainnet for my Dapp transactions to run within, say, 20-30 ...
0
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1answer
142 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)...
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1answer
37 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 ...
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0answers
23 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
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1answer
52 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 ...
0
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0answers
34 views

how to stop increase difficulty in private ethereum network [duplicate]

According to this discussion: How do I decrease the difficulty on a private testnet? I did the same changes on geth and built geth. The problem is when I modify geth and create my private network, ...
3
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1answer
62 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
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0answers
139 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
167 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
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1answer
32 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
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1answer
95 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
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0answers
10 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
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0answers
60 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
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1answer
57 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
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1answer
260 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
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2answers
115 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 ...
0
votes
1answer
139 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 ...
8
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2answers
341 views

Geth will not start mining in private network!

Will somebody please help me out? I am stuck at this since hours; did the process +3 times, each time deleting the datadir content. Geth still will not start mining!! Specs: Geth 1.8.11, on macOS X ...
0
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2answers
79 views

Difference between rinkeby.etherscan and etherscan alone

Which is the difference between both? Both are useful to have the own ethereum tokens or someone is better than other. Can someone explain??
0
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2answers
342 views

Is it possible to run multiple Ganache nodes for private test network?

I wonder if i can create my own private cluster as it can be done with Geth for development & test purposes : https://github.com/ethereum/go-ethereum/wiki/Setting-up-private-network-or-local-...
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0answers
21 views

Is there a 'simnet mode' for Ethereum?

simnet is a feature of the Bitcoin client btcd, which allows a user to create a virtual test network where he can create blocks at ease. Is there a similar feature for Ethereum/geth? What's the ...
0
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0answers
79 views

Error: invalid chain id for signer on Ropsten

For past few daya , I am unable to sync the blockchain data on my machine with Ropsten network . I have upgraded geth to the latest version 1.8.10 stable . But this does not resolves the issue for me ....
0
votes
1answer
54 views

Transactions confirmation

I am using geth --dev --ipcpath ~/.ethereum/geth.ipc --minerthreads=5 console to run privatenet. So i use Etherium wallet to interact with it. The problem is that i need to do some transfer ...
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0answers
65 views

Getting Errors while syncing of blocks (Ropsten network)

Today the block sync with Ropsten network on my machine is giving me following error :- ERROR[06-05|06:59:12] ########## BAD BLOCK ######### Chain config: {ChainID: 3 Homestead: 0 DAO: <nil> ...
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0answers
25 views

Mist wallet not merging for light / mined ether - Testnet / Ropsten

Mist wallet not merging for light / mined ether - Ropsten / Testnet. In Mist I have 1 testnet (Ropsten) account - called Atest. I have 1 testnet wallet - called Atest1 I am mining with geth When I ...
1
vote
1answer
131 views

EIP20.Sol does not compile. On remix.ethereum.org, I am trying to deploy a test token

I followed the instructions and got an error: Parse Error Expected Token ; got 'LParen' emit Transfer(msg.sender, _to_value); How do I fix this? Code: function transfer(address _to, uint256 ...
1
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0answers
20 views

What use case do peers have on test net?

Hi I am new to Ethereum (and Blockchain) and am trying to set up testnet using Geth to learn about about the intricacies of Blockchain. So this might be a trivial question: A lot of tutorials out ...
1
vote
1answer
90 views

Is there a difference between the terms TestRPC and Testnet?

From what I understand, a testnet is just a local (or private) blockchain for developers to experiment on, and TestRPC is/was a specific implementation of a testnet for the Ethereum blockchain? (I ...
0
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0answers
56 views

goroutine while running geth on aws node

I'm trying to run a testnet node of a private network id on my aws instance. It starts syncing but then it crashes and shows goroutine err. The entire stack trace was too long so just pasting part of ...