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Ethereum : Recent Questions and Answers (Page 4)

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

fatal error when try to serve geth in ipc

I have initialized my own genesis block and startedgeth --datadir pom Then I want to use "personal" so I startedgeth --nodiscover --ipcpath pom/geth.ipc --networkid 31337 --rpc --rpcaddr 192.168.225.235...

Asked on 12/23/2021

1 answer

call a contract function which creates a new contract in web3.js makes an error VM Exception while processing transaction: revert

At first I'm developing with truffle v5.1.34, Node v10.16.0, Web3 v1.2.4To make it simple, I have a Two contracts, DApp and UserWhat i'm doing is call a DApp...

Asked on 12/23/2021 by MinKyu

1 answer

Storing and Updating an array in a smart contract (for creating permissioned networks and updating members)

Can I define a smart contract including a dynamic array that I can update its content later? precisely,I have some IoT(Internet of things) nodes sharing the received data from sensors...

Asked on 12/22/2021 by Siamak

1 answer

How long did a transaction spend in the mempool?

I'm trying to create some statistics on how long a transaction spends in the mempool before being included in a block, so I can reason about future gas prices. It...

Asked on 12/22/2021 by jespern

1 answer

How to set a transaction timeout in txpool properly?

I want to limit transaction pending time to 5 seconds, after that the transaction considered as failed; does --txpool.lifetime solve the problem ?...

Asked on 12/22/2021

2 answer

How to create withdraw token requests on my custom token sale dashboard

I created a token sale dashboard. Users can send BTC,LTC,ETH to dashboard. When user send BTC, LTC or ETH to dashboard, they get tokens to their dashboard budget (offchain) based...

Asked on 12/20/2021 by Berk

1 answer

Migrate contract from testnet to mainnet

What is the safest way to migrate a contracted deployed in a testnet (Rinkeby) to mainnet?I can change the configuration of my truffle project and read the code from...

Asked on 12/20/2021

2 answer

Is there some possibility to listen MakerDAO's LogNote events?

I wonder is there some possibility to listen MakerDAO's LogNote events, like we able to do with standard events. What I managed to research: I saw that LogNote was listed...

Asked on 12/20/2021 by Svitlana Moiseyenko

1 answer

Mist runs on one KDE machine no issue; identical version different machine - executable fails. Edit: Helpful Hint Added

I've got a real brain-boggler here. Running mist no issue on one machine Ubuntu 14.04.4 KDE, identical version on another machine (cough) chromebook, chrooted, and the executable won't launch. I'd...

Asked on 12/18/2021

2 answer

Call a smart contract function when condition met

I am currently developing a smart contract with several states:enum State {created, accepted, over}Depending on the state, users are allowed to perform different action. What I would like to...

Asked on 12/18/2021 by YohjiNakamoto

1 answer

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