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Questions tagged [ropsten]

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

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15 views

Interacting with Already deployed Ethereum Contract and recording response

I understand this topic has been discussed before, but my question is specific to web3.py. How can I interact with function of already deployed ethereum contracts on Ropsten TestNet. my code runs with ...
0
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1answer
21 views

How to configure APIs to run with Ropsten addresses

I have my contracts deployed on Ropsten network. I deployed those contracts from my local machine using Truffle migrate. Then I set up an AWS EC2 Ubuntu server to host my RESTful APIs. I installed ...
1
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1answer
24 views

How can I call a function in deployed contract on Ropsten Testnet when I don't have ABI and source code?

For some testing I deployed several contracts on Ropsten Testnet using web3.py but now if I want to execute them or call any function from them, how can I do this? I don't have ABI as I did several ...
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0answers
11 views

How to generate Ethereum accounts using Web3 Python on Ropsten?

Just wanted to know how to use web3.py to generate Ethereum accounts. I tried using ropsten.infura.io/v3/<KEY> as an HTTPProvider, but it does not allows to create me account
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0answers
22 views

Matching inside my contract fails with multiple participants

my contract (can be found on my gist: https://gist.github.com/fabs993/e13fa6ecd9526d30c8a6d85c10180075) fails at more than 5+ participants. So in my use-case I have two kind of participants Producer ...
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2answers
21 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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0answers
18 views

Metamask not loading transaction fee on Ropsten

I'm trying to send test Ether to a contract on Ropsten, but Metamask won't load the gas options on the send transaction screen. It displays a "Loading" text and never renders the Fastest/Fast/Slow ...
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0answers
24 views

Ropsten chain not syncing

I started syncing my ethereum ropsten chain using geth 3 days ago in fast mode. eth.syncing shows false , but the difference between highest block shown by my node and the one shown at ropsten ...
3
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1answer
37 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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2answers
52 views

ropsten: insufficient funds for gas * price + value using web3

Im using "web3": "^1.0.0-beta.37" And I want to understand How can I send rawTransaction My code is: const pk = 'xxxxxxx'; const rawTransaction = { "to": "...
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1answer
35 views

Transactions on Ethereum private network using the MetaMask Ropsten test connection?

I have 4 accounts on my private blockchain ethereum network and one of the account has balance of 10000000000000000000 and other accounts have zero balance each. When I connect to this network from ...
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0answers
27 views

Mainnet sync Broken

I am having a Mainnet on Azure VM which was syncing the network as expected, but mean while after adding Ropsten network syncing on the same VM simultaneously I'm facing problem with Mainnet sync ...
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0answers
34 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
22 views

Event firing before data is actually set [Testnet]

Today I've faced the behavior similiar to this post. Event firing before data is actually set I'm getting events using infura and then checking for the state. I expect to read updated blockchain ...
0
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1answer
36 views

Any option to get larger amount (i.e. 2000) of Rinkeby Ether?

We are planning to open our product to the public for live testing. We want to support both Ropsten and Rinkeby networks, just in case. When registering, each user should get around 10 ether on ...
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2answers
22 views

How to access API's from smart contract deployed on Ropston network from local Machine?

I want to access API's from a smart contract deployed on Ropsten network. This smart contract is written and deployed by some external entity and they have exposed API's. I know the smart contract ...
0
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1answer
30 views

Is there a boilerplate dApp on Github which uses uPort, truffle and infura on the ropsten testnet?

I am developing a dApp using those technologies and facing difficult problems when trying to save information on Ropsten. I can't approve my transaction via uPort because the selected account balance ...
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2answers
26 views

Tokens on a Contract

Want to get tokens amount sent to my contract address on chain, but don't know address of token. Can I get through any function ? Any possible way to so ?
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1answer
45 views

Ropsten Ethereum not showing transaction information

I am using geth 1.7.3-stable-4bb3c89d to sync with Ropsten network. I started synchronization with fast mode and restarted the service. When I type eth.syncing in geth console it always shows false ...
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0answers
31 views

List of Token Exchanges Available on Testing Network?

Found Kyber Network Token Exchange on Ropsten so far. Please share if you know more token exchanges available on any testing network for trading Tokens as a test.
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2answers
153 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 ...
1
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1answer
38 views

Transaction Hash after deploying contract with Web3.py too long

I managed to successfully deploy a contract using Web3.py to the Ethereum Ropsten network using this bit of code def deploy(self): instance = self.w3.eth.contract(abi=self.abi, bytecode=self.bin) ...
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1answer
114 views

How to generate test funds for Infura Ropsten Network wallet

I have been using Web3.py, and Web3's TestRPCProvider to create some utility functions in Python to deploy a smart contract meant to generate an ERC20 Token, and then communicate with that smart ...
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2answers
58 views

How to solve insufficient funds (Ropsten)?

I have tried adjusting the Gas Limit and GWEI and I get this error. I am using infura and Ropsten. Has anyone any ideas about this? Code - var rawTransaction = {"from":myAddress, "...
1
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1answer
55 views

Syncing on Ropsten taking too long

I am running geth on a debian system and on testnet ropsten. However I notice it's not always fully synchronized. Is this due to the network, the program, or the machine itself? It's always about ...
2
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2answers
47 views

Transaction rolled back and re-mined later?

A few hours ago, I was testing my dapp on ropsten and something strange happened. I sent a transaction (A), to the blockchain, it got mined and my server synced it. Then 30 minutes later, I sent ...
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1answer
63 views

Need help in deploying a dapp on Ropsten without truffle

I am trying to deploy a Decentralized application on Ropsten without using truffle (trying to challenge myself), but for now I am stuck at few places, the deploy.js file which is supposed to deploy ...
0
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1answer
22 views

Strange Ropsten Bug - transactionsRoot and recieptsRoot has same value

I'm testing some stuff on Ropsten network and I've found strange block: 4138624 When I run (using web3 injected in Metamask): web3.eth.getBlock(4138624,function(err,res){ console.log(res); }) I'm ...
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3answers
135 views

Unknown account error while deploying dapp on Ropsten testnet

While trying to deploy/migrate a dapp to Ropsten I get the following error: C:\CrowdBank-master\CrowdBank-master>truffle.cmd migrate --reset --network ropsten Using network 'ropsten'. Running ...
0
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1answer
41 views

How can I withdraw ether balance from contract to a personal account?

How can I withdraw ether balance from a contract to a personal account? İ tried but I couldn't do it on Ropsten. Could anybody tell me step by step how to test this? Thanks.
2
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1answer
40 views

Using Event API of Ropsten

I wanted to get the details of the following transaction hash : https://ropsten.etherscan.io/tx/0x8b43cf5e2c9d4eabb1121036de3d60354f64e9ccc6004caccba0e478c50ed2e6. And Ropsten has got an API to get ...
2
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1answer
127 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.
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0answers
29 views

Why Ropsten Testnet has Total Ether Supply < the biggest ether holder balance?

Let's see two below image that I cropped them from ropsten.etherscan.io. Can someone tell me why Total Ether Supply < the first address balance?
1
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1answer
163 views

How to access a deployed smart contract attributes using web3.eth.contract(abi,address) in python

web3 = Web3(provider=HTTPProvider(http://ropsten.infura.io/v4/API_KEY) abi = '[{"constant":false,"inputs":[{"name":"_utxoPos","type":"uint256"},{"name":"_txBytes","type":"bytes"},{"name":"_proof","...
1
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1answer
57 views

Running out of gas when deploying contract in Ropsten Testnet

I am trying to create a Fomo3d clone contract in Ropsten testnet for debugging purpose. Here is the code: https://etherscan.io/address/0xa62142888aba8370742be823c1782d17a0389da1#code But I am ...
2
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1answer
208 views

Cannot connect to any ethereum networks using API key

I followed a tutorial about how to connect web3 with ethereum networks. I registered in infura.io and get all the urls. But when I try to connect to any network it is not connecting.When I print web3 ...
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0answers
62 views

Unable to deploy contract due to extremely high gas estimate

I'm getting issues with the following contract for no obvious reason (I'm banging my head over this problem last 8 hours), I'm getting: Gas estimation errored with the following message (see below). ...
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0answers
18 views

How can i deploy contract with > 4.7 Mgas required on Ropsten?

I was able to deploy contract that requires more gas than default Ropsten block gas limit: https://ropsten.etherscan.io/tx/0x7c40cd2c539c03d110da8988641518ff6ff907a284f5074ed3d8517eb80b51f9 (5594037 > ...
2
votes
1answer
114 views

Created Crowdsales contract, sending ropsten ETH to the contract and Failed

I created crowdsale contract - https://ropsten.etherscan.io/address/0xfbb2759ef0b7169d0a2effa971845ea0f99f87b1 My token - https://ropsten.etherscan.io/token/0x0f26c1c05f1bbBC7Eff0488F1a98619e8a9758cf ...
6
votes
2answers
305 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
102 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>&...
1
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1answer
47 views

How to get notify if transaction got failed, dropped, or successes [closed]

I am new in dapps world and I want to deduct balance/points when a user buys an item currently I am unable to update balance because sometimes transaction got failed, dropped, or successes after 30 ...
1
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2answers
94 views

Error: gas required exceeds allowance or always failing transaction at chrome-extension

I'm using Remix, Metamask, ROPSTEN and can not deploy any contract...always getting the same message...it used to work...not working any more...happens in different machines, happens with Chrome or ...
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0answers
26 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?
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1answer
56 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 ...
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1answer
102 views

Transaction taking too long on Ropsten testnet

I checked the syncing status, it returns false. I submitted transaction with a very high gas value but it takes long time to get completed. This is my local ropsten node: INFO [08-06|13:16:45.473] ...
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1answer
249 views

Parity, Web3, Nodejs - Error: Transaction was not mined within 750 seconds, please make sure your transaction was properly sent

I'm using Parity ( "ropsten" test net), Nodejs and web3js to deploy smart contract from my system. Parity is synchronised in test mode, but when I run below code using Nodejs, it gave me a transaction ...
0
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1answer
71 views

Created Standard Token, deployed successfully but on Myetherwallet error

Here is the token contract I created - https://ropsten.etherscan.io/address/0x2cccce414fcdf028c0574766af4302a4abeb5788 Address: 0x2CCcCe414FCdF028C0574766Af4302A4aBEB5788 For some reason I can not ...
0
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1answer
118 views

Solidity transfer function not work

I just coded ether transfer function using REMIX IDE on Ropsten testnet. It has only two functions that setting receiver address and amount of ether and sending ether to receiver address. After I ...
2
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2answers
73 views

The contract code couldn't be stored, please check your gas amount. [Zeppelin, Truffle.js, Ropsten]

I am having some problem with deploying the simple Token Contract to Ropsten network. Error is "The contract code couldn't be stored, please check your gas amount". I tried to change Gas values ...