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Ethereum : Recent Questions and Answers (Page 2)

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

Viewing transaction events by using web3 on geth console

According to https://web3py.readthedocs.io/en/stable/contracts.html#web3.contract.ContractEvents.myEvent web3 allows to extract the pertinent logs from a transaction receipt:tx_hash = contract.functions.myFunction(12345).transact({'to':contract_address})tx_receipt = w3.eth.getTransactionReceipt(tx_hash)rich_logs = contract.events.myEvent().processReceipt(tx_receipt)rich_logs[0]['args'] {'myArg': 12345}but when...

Asked on 01/01/2022 by Juan Ignacio Pérez Sacristán

1 answer

I'm trying to create an app that allows people to exchange ether between themselves but I have the error: "web3.eth.transact is not a function"

<!DOCTYPE html><html> <head> <meta charset="utf-8"> <center> <title>dEnergy</title> </head> <body> <label for="name" class="col-lg-2 control-label">Power you...

Asked on 12/30/2021 by user34915

2 answer

.toml stream did not contain valid UTF-8

While trying to configure parity using the toml file (Tom's Obvious, Minimal Language), I stumbled on this error - $ parity --config /data/parity/node.tomlLoading config file from...

Asked on 12/30/2021 by Chaitanya Bapat

1 answer

Acceptable Gas Usage of Smart Contract functions

So I've been building a smart contract where users can register and store their projects at. I'm wondering if the gas usage of functions within my contract is acceptable or...

Asked on 12/30/2021 by wbt_

3 answer

Reproducing a Ganache Server across multiple computers

There are multiple developers on the team and it seems as though we all want to be working on a specific test network with specific public and private keys with...

Asked on 12/30/2021 by SDG

1 answer

Quorum 7nodes example unable to attach to geth node 1,2,4,5,6,7 but node 3 is working

Quorum 7nodes example all of sudden gave fatal error unable to attach to remote geth.Problem: can't attach to geth nodeEvery time I import metamask account to geth node...

Asked on 12/27/2021 by Surbhi Audichya

2 answer

Metamask Web3js Synchronous Method Error

Okay guys, I'm a complete newbie to Ethereum and Web3.js and going through the Crypto Zombies tutorial and have done okay so far. But, when I use this function in...

Asked on 12/27/2021

1 answer

Use Values Returned from One Function in Another

need a little help if you can spare the time. Making a little card game where people can collect "warrior" cards. We'll have an initial 12 master "cards" that supply...

Asked on 12/27/2021 by Kevin Phillips

1 answer

What is the v part of transaction signature?

If I understand correctly when we send a transaction, we send an unsigned part m and a signature consisting of v, r, s. Each node verifies the signature by checking:...

Asked on 12/27/2021 by Anh Dũng Lê

1 answer

How to convert hashed result into readable format?

I'm trying to convert a hashed block number "30054a" into readable format but I'm getting logs something like this:0JFor another hashed value:Y����#�(�J�d��F,ĦJ/I'm using the following code on my...

Asked on 12/25/2021 by Sowmay Jain

1 answer

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