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Ethereum : Recent Questions and Answers

Find answers to your questions about Ethereum or help others by answering their Ethereum questions.

part of private blockchain disapear

I have a private blockchain, mined by one ec2 instance. When I restart the instance, significant part of the chain disappear with all transaction and contracts on it. How can...

Asked on 01/05/2022 by Tomas Batrla

1 answer

web3 erroneously returning error

This is strange. My web3 script to deploy a contract seems to work, but always activates the .on('error', fcn) clause even though there is no error. The message says Transaction...

Asked on 01/05/2022 by bitsanity

2 answer

I'm trying to use web3js to return the value of a variable in a contract but I'm told isn't a function, anyone know a better method?

<!DOCTYPE html><html><center> <head> <meta charset="utf-8"> <title>Mediachain</title> </head> <body background="blockchain_background.jpeg"> <h1>Mediachain</h1> <h2 id="Return"></h2> ...

Asked on 01/03/2022

1 answer

How to handle exceptions in ethreum private network using revert(),throw

I am running a private ethereum network using geth --rpc --rpccorsdomain "*" --datadir ./chaindata --port "30330" --nodiscover --rpcapi "db,th,net,web3" --networkid 2010 init genesis.jsonand then geth ...

Asked on 01/03/2022 by Arpit Gupta

1 answer

How can I distribute funds to present stakers efficiently?

I am building a smart contract which keep the token holder's eths for a while and give them rewards when they withdraw. The reward is given from the ethers collected...

Asked on 01/03/2022 by Fariha Abbasi

1 answer

Inheriting from contracts of a different Solidity version

The OpenZeppelin version I'm using is Solidity 0.5.0 but I'm using 0.5.15 in my core contracts. Everything is compiling but I'm having some issues verifying the contract on Etherscan and...

Asked on 01/03/2022

2 answer

Does the term "Ethereum ECDSA signature" have a consistent meaning?

If you were writing some instructions and one of them was:Provide the Ethereum ECDSA signature of the file using the person'sEthereum address.Would the above instruction have a consistent meaning...

Asked on 01/03/2022

1 answer

Is Ethereum fast sync feasible to get logs

I want to get the logs of an contract address by filtering the even with transfer Event. I cant use Infura for its restrictions and limits. So i want to...

Asked on 01/03/2022 by mzaidi

2 answer

It is possible to register a name in ENS (Ethereum Name Service) from Mist Wallet?

I want to register a name in ENS, but I have only done it from MyEtherWallet because everything is built-in. But now I want to use an address I...

Asked on 01/01/2022 by Moisés Briseño Estrello

1 answer

I just want to query Parity what setup should I use?

I want to run javascript on node locally against Web3. I require a minimal amount of information security and I just want it to work. I tried snap run parity...

Asked on 01/01/2022

1 answer

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