Questions tagged [ropsten]

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

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87
votes
2answers
20k views

Comparison of the different TestNets

The Metamask client allows access to three test networks: Ropsten Kovan Rinkeby I'm curious: What are the similarities / differences between them? Which use cases are best for each network Are ...
36
votes
5answers
7k 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 ...
33
votes
4answers
5k 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 ...
18
votes
1answer
14k 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.
17
votes
2answers
2k views

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 ...
16
votes
2answers
9k 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 ...
12
votes
1answer
726 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) ...
12
votes
1answer
430 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 ...
11
votes
3answers
850 views

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 ...
9
votes
4answers
11k 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(...
9
votes
1answer
18k 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?
8
votes
1answer
1k views

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.
7
votes
2answers
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/ ...
7
votes
4answers
877 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 ...
7
votes
3answers
1k 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....
6
votes
5answers
2k 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....
6
votes
1answer
897 views

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 ...
6
votes
2answers
488 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" ?
6
votes
1answer
700 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 ...
5
votes
2answers
3k 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,...
5
votes
2answers
6k views

How to obtain all transaction of a contract?

I'm trying to obtain the all 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 ...
5
votes
1answer
791 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....
5
votes
1answer
691 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?
5
votes
2answers
1k 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 ...
5
votes
2answers
1k 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 ...
4
votes
5answers
8k 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 ...
4
votes
1answer
332 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 ...
4
votes
1answer
102 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 ...
4
votes
2answers
303 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(...
4
votes
1answer
3k 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 ...
4
votes
2answers
942 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 ...
4
votes
1answer
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 ...
4
votes
1answer
879 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 } ...
4
votes
1answer
980 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 ...
4
votes
1answer
374 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 ...
3
votes
2answers
2k 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 --...
3
votes
2answers
2k 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: { ...
3
votes
1answer
2k views

Bootstrapping Geth on Ropsten Testnet with Known Nodes

I tried syncing with the Ropsten testnet using Geth with the following command. geth --testnet --mine --minerthreads=1 When it looks from Geth like I'm synced, the block height is way behind what ...
3
votes
2answers
816 views

Visibility of source code after contract verification

I have seen many verified smart contracts with there source code as visible. E.g. See Here. Now as i want to test my smart contract on Ropsten Network before going live, is it not possible to deploy ...
3
votes
1answer
1k views

approveAndCall () from ERC20 token contract on MainNet and on TestNet Ropsten

How can it be possible: the same function in the same code, on MainNet can be called, and on TestNet when trying to launch through the same Ethereum Wallet, I get the message: It seems this ...
3
votes
1answer
934 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=...
3
votes
1answer
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 ...
3
votes
2answers
1k views

Geth node not mining anymore since synced to new Ropsten testnet

After upgrading geth node to new Ropsten testnet node is not mining anymore, even though log messages seem it is trying to: I0328 09:51:54.537322 miner/worker.go:542] commit new work on block 645501 ...
3
votes
1answer
225 views

Code for contract interaction works on Kovan but not on Ropsten

we deployed (via remix) the code below where one contract can influence a state variable in the other. For some reason if I deploy the contracts on Ropsten it doesn't work and if I deploy them on ...
3
votes
2answers
441 views

Migrating from TerstRPC to live testnet (Ropsten)

I have successfully developed my smart contracts in Solidity and the scripts using the web3 API to deploy them on the testRPC. Now, I would like to test on a testnet network: Ropsten. How can I ...
3
votes
0answers
203 views

The sendSignedTransaction function does not activate the on('receipt') event at an appropriate time

console.log(transacting...); web3.eth.sendSignedTransaction('0x' + serializedTx.toString('hex')).on('receipt', receipt => { log(receipt); log(`https://ropsten.etherscan.io/tx/${receipt....
3
votes
3answers
463 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:...
3
votes
1answer
654 views

Ropsten infura test network + web3 js event listener

I have deployed contracts on ropsten test network. truffle.js ropsten: { provider: function() { return new HDWalletProvider(mnemonic, "https://ropsten.infura.io/<api-token>") }, ...
3
votes
3answers
1k views

how to deploy smart contract in ethereum network using ropsten network?

I have created a smart contract(a standard token smart contract) in solidity and truffle. Now I want to deploy it to ethereum network. I want to use ropsten network because I want to use metamask ...
3
votes
0answers
564 views

The gas price on the Ropsten test net today rose from 0.211 ether per million gas to 1.8 ether per million gas, why?

Seems like Ethereum adjusts its gas price to meet demand. How does it do this?