Questions tagged [ropsten]

Questions related to the Ropsten testnet: https://blog.ethereum.org/2016/11/20/from-morden-to-ropsten

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Comparison of the different TestNets

The Metamask client allows access to four test networks: Ropsten Kovan Rinkeby Goerli I'm curious: What are the similarities / differences between them? Which use cases are best for each network ...
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40 votes
5 answers
8k views

Ropsten testnet is under kind of attack? What can we do?

For the last approximately 24 hours, Ropsten testnet is under an attack in my opinion. The gas limit is raised to 200m and the attacker was proposing blocks with more than 4,000 internal txs ...
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37 votes
4 answers
6k views

What is Olympic, Frontier, Morden, Homestead and Ropsten Ethereum blockchain?

I am studying Ethereum and have not been able to figure out the difference between Homestead and Morden. In some docs, it is written that Homestead uses a new algorithm which takes less time. I don't ...
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19 votes
1 answer
16k views

Steps to deploy a contract using MetaMask and Truffle [closed]

i'm noob, I want to deploy my contract on Ropsten network with MetaMask & Truffle, plz explain to me the steps to deploy it.
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18 votes
2 answers
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What prevents the market from assigning value to testnet ETH?

If enough people mine testnet ETH for testing purposes, difficulty will rise along with the cost of generating testnet coins. In some a circumstance why would the value of testnet coins not rise based ...
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16 votes
2 answers
13k views

Connecting to hosted web3 provider from NodeJS backend

I'm using these instructions from etherchain. Here's a similar question(seems like duplicate, but it's not). The solution provided there doesn't work for me, because I don't have a local ethereum ...
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14 votes
1 answer
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Why are the Rinkeby and Ropsten testnets named after Swedish locations?

Why are the Rinkeby and Ropsten testnets named after Swedish locations? I know what they are but am wondering why they were named this way.
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13 votes
4 answers
28k views

How to connect to the Ropsten test-net using web3.js

I want to connect to the Ropsten test-net: // Is there is an injected web3 instance? if (typeof web3 !== 'undefined') { App.web3Provider = web3.currentProvider; web3 = new Web3(...
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13 votes
1 answer
23k views

What is actually Ropsten? What is a new "network"? [duplicate]

Where can we read about what exactly is Ropsten and it's influence to the Etherium in general?
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13 votes
1 answer
1k views

Is it possible and sensible to deploy a contract to the same address on Mainnet and Ropsten?

Traditionally when people have deployed contracts for public use they have tended to publish separate contract addresses for Testnet and Mainnet. Often this then requires them to include code to check ...
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12 votes
1 answer
793 views

parity Ropsten testnet forked at block 296151?

I am seeing what looks like a fork in the Ropsten testnet at block 296151 (Jan 6, 11:14 PM UTC). Is this expected? My local Parity node (Parity/v1.4.7-beta-f2058bd-20161227/x86_64-macos/rustc1.13.0) ...
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  • 518
11 votes
1 answer
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How to generate a vanity address for a smart contract to be deployed on?

I am aware of the possibility to generate vanity addresses for normal accounts. However, how is possible to generate vanity addresses for external owned accounts (which host smart contracts)? I'm ...
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11 votes
3 answers
14k views

How to obtain all transaction of a contract?

I'm trying to obtain all the transactions of a contract, but in all cases I only obtained [] or undefined. I'm following this posts: Common useful JavaScript snippets for geth web3 filter option not ...
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11 votes
3 answers
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Syncing ethereum testnet

I'm syncing my geth client with ropsten testnet and just realized how slow is the syncing process after a certain block(trying to retrieve information from blocks that got in blockchain yesterday) for ...
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9 votes
3 answers
2k views

Deployment Failed : "Migrations" -- only replay-protected (EIP-155) transactions allowed over RPC

I am trying to migrate the code which is already tested in mainnet to ropsten network. I wonder why it is throwing the below strange error. We as a team unable to find a solution for this for past 2 ...
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8 votes
4 answers
1k views

Truffle: Migrate to ropsten - fails silently

When I run the following command I receive no output whatsoever: truffle migrate --network ropsten This is just after creating a new project using truffle init and creating a single contract. When ...
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  • 235
8 votes
3 answers
3k views

How to send a lot of transactions to ethereum, using js

I'm trying to send a lot of transactions to Ethereum with one program written in js. I use node js, web3 and infura ropsten. The problem is: if i send transactions at once, most of them just disappear....
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7 votes
2 answers
4k views

How to switch from Morden to Ropsten?

I installed a v.0.8.7 client and tried switching to Ropsten, following these instructions. Namely, I typed in: dyn906-29:~ sam$ geth -- datadir /Users/sam/Library/Ethereum/testnet/geth/chaindata/ ...
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  • 488
7 votes
2 answers
9k views

What should be the gas and gasPrice for Ropsten Network in Truffle Config?

I just want to test my smart contract to be deployed in the Ropsten network, and I'm still puzzled on what should I put for the gas and gasPrice in the Truffle config. Thoughts about this? ropsten: { ...
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  • 461
7 votes
6 answers
17k views

What happened to Ropsten Faucet?

I usually get ether for Ropsten Tesnet at http://faucet.ropsten.be:3001/, now the site seems to be offline. My question is what happened to the site, but more important, now how can I get ether for ...
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7 votes
1 answer
900 views

ETH stolen on Ropsten

Has anyone encountered the following scenario on Ropsten: You create an account in Geth, and proceed to transfer some ETH to yourself via a faucet. You unlock the account and proceed to start ...
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6 votes
5 answers
4k views

How to deploy contract to the Ropsten test-net using web3.js

I am newbie in solidity. I don't understand what steps I must do for deploy contract in the Ropsten test-net. This is my contract: pragma solidity ^0.4.15; import './ERC20.sol'; import './SafeMath....
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6 votes
2 answers
2k views

Is there a reason Ropsten doesn't have the same block gas limit as mainnet?

It appears as though Ropsten still has a limit of 4.7m gas while mainnet is almost 8m. This makes testing for real-world dapps difficult. Why is it that ropsten and mainnet are not in alignment with ...
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6 votes
2 answers
2k views

Transaction logged at geth node, but unable to locate Transaction entry on Ropsten

When sending new transactions one at a time (meaning separated by 1 or several minutes in time) they are correctly broadcasted and mined. But when sending several of them one after another (spearated ...
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6 votes
2 answers
745 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" ?
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5 votes
2 answers
3k views

Geth v1.7.2 not connecting to peers on ropsten?

I'm using geth from Ethereum Wallet (as you can tell from the command path). $ '/home/myalias/.config/Ethereum Wallet/binaries/Geth/unpacked/geth' console --testnet --datadir=/home/rshi/.ropsten --...
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  • 203
5 votes
2 answers
4k views

Deploying contracts in Ropsten with Truffle

I have another n00b question... sorry about that :( I'm trying to deploy a smart contract to Ropsten. I have synched the Ropsten network with geth --testnet --fast --rpc --rpcapi eth,net,web3,...
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  • 139
5 votes
3 answers
11k views

Where can I get Ropsten Eth?

I want to create my own coin but I want to experiment first. I'm trying to deploy in the Eth wallet. All the websites to get Ropsten eth are down.How can I try making a coin without spending any money?...
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5 votes
2 answers
12k views

Error while buying test ether from https://faucet.metamask.io/ - Mastering Ethereum

I am using Ethereum wallet MetaMask chrome extension and I am connected to Ropsten test network. I am following the instructions from the book Mastering Ethereum: Building Smart Contracts and DApps ...
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5 votes
1 answer
841 views

How to point a domain registered with ENS to swarm content?

I'm hosting my web site on swarm now. And I registered a .test FIFS domain to point to it: 5.test I can verify that I am the owner of that domain with the ensutils.js: > ens.owner(namehash('5....
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5 votes
1 answer
760 views

What's the difference between Olympic, Morden and Ropsten?

Canonical question about the public Ethereum testnets. What's the difference between Olympic, Morden and Ropsten? What are their network IDs, which ones are still considered active?
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5 votes
2 answers
5k views

How to fix "TypeError: Cannot read property 'sendTransaction' of null" when deploying a contract on Ropsten with hardHat?

I am getting this error: TypeError: Cannot read property 'sendTransaction' of null when running this command: $ npx hardhat run scripts/deploy.js --network ropsten with HardHat on Ropsten network. ...
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  • 181
5 votes
5 answers
5k views

web3.eth.getGasPrice() always return 1GWei

For estimate transaction cost, I use web3.eth.getGasPrice() function. The return callback value always 1Gwei(1,000,000,000) in ROPSTEN. web3.eth.getGasPrice(function(error, result){ console.log(...
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5 votes
4 answers
7k views

Are there ropsten ERC20 testnet tokens?

I am trying to write an application using web3.js and I want to integrate some ERC20 functionality. But rather than muddy up the mainnet, I'd like to try things on the Testnet first. I see that https:/...
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  • 231
5 votes
1 answer
3k views

What happens after selfdestruct is called?

https://ropsten.etherscan.io/address/0xf825d3b3d06a4b46379a3c276df7f26abd055463 After selfdestruct call was made, all the balance was transferred to the deployer of the contract. Why are withdraw ...
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5 votes
3 answers
886 views

"TypeError: Cannot read property 'sendTransaction' of null" error when deploying to Ropsten testnet using hardhat

I am getting the error: TypeError: Cannot read property 'sendTransaction' of null at ContractFactory. (/Users/UserName/Downloads/nft-marketplace-ethereum/node_modules/@ethersproject/contracts/src.ts/...
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  • 51
4 votes
1 answer
2k views

The Ropsten bootnodes of the Eth Foundation are down, can anybody share any other?

Running geth in verbose 5 mode, I get this: TRACE[01-11|12:45:26] Dial task done task="discovery lookup" TRACE[01-11|12:45:26] Skipping dial candidate id=...
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4 votes
1 answer
536 views

What replay attack protections does Ropsten provide?

I understand the Ropsten testnet was partly necessary because of some broken replay-protection measures on Morden. So what's different for Ropsten? Is the nonce simply incremented by a smaller ...
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4 votes
1 answer
109 views

Has Morden issues? [duplicate]

according to https://testnet.etherscan.io/, the last block has been mined more than 12 hours ago, whereas before more than one were mined per minute. Has the difficulty changed so much ? Or has the ...
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  • 285
4 votes
2 answers
2k views

Does The Test Blockchain Get Reset/Cleared?

hi i am working with solidity and blockchain and i wanted to find out about how often the ropsten-testnet gets reset. i cant find what i'm looking for so maybe it doesn't get reset, but if it doesn't ...
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  • 286
4 votes
1 answer
4k views

Issues connecting to the Etherscan Ropsten API via web3.py

I am developing a simple application that transfers tokens between users. The token in an ERC20 standard token. I am really new to the web3 and ethereum development world and I am confused by quite ...
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4 votes
2 answers
1k views

Testing in ropsten network with truffle.js gives me this error

root@ubuntu-4gb-nyc3-01:~# truffle migrate --network ropsten (node:14686) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): TypeError: this.provider.sendAsync is not a ...
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4 votes
1 answer
1k views

Geth or Mist do not sync any more [duplicate]

I am new to ethereum but managed to successfully start Geth on 2 of my machines , and could also install MIST. Now, since several days, one of my machines does not sync with the testnet anymore. I ...
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4 votes
1 answer
1k views

What do the parameters in the Ropsten genesis file mean?

Here's a snippet of Geth's Ropsten genesis: "config": { "chainId": 3, "homesteadBlock":0, "eip150Block":0, "eip155Block":10, "eip158Block":10, "eip160Block":10 } ...
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4 votes
1 answer
2k views

Truffle.js and Kovan/Ropsten

I am trying to use truffle.js and the testnet. I want to test using Kovan an Ropsten. Here is the doc from truffle - networks: { "live": { network_id: 1, // Ethereum public network // optional ...
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  • 41
4 votes
3 answers
1k views

web3.eth.Contract(abi, address) doesn't return contract instance

i'am trying to make a instance of my contract in js using web3, but when I use the function web3.eth.Contract(abi, address) the result is not the expected(I take the ABI from remix). this is the code:...
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  • 307
4 votes
1 answer
451 views

How long does it take to "save artifacts" to Ropsten?

Migrating contracts with Truffle I get stuck at Saving artifacts... Sometimes for 10 minutes or more. I also get: Error: Transaction 0x123...123 wasn't processed in 240 seconds! Is it normal that ...
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  • 263
4 votes
0 answers
231 views

How to handle Ropsten's chain split with geth 1.10.8

I upgraded and restarted geth connected to Ropsten to 1.10.8, but the content is different from Ethrscan and infura.io from 10920274 block. And my geth has the latest block number of about 7,000 ...
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4 votes
2 answers
1k views

Want a large number of Test Ethers. How to get them?

I have made a proof of concept that works on Ropsten Test Network. Now for users to use it I need a large number of Test Ethers in my account. As far as I know, we can get only one ether with one IP ...
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  • 53
3 votes
4 answers
3k views

Good Ropsten USDC faucets?

I'm trying to play around with the DyDx Protocol on Ropsten, but to get any further I need to have some USDC in my account. I've had no luck googling for this. There seems to be this website for it, ...
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