Category Ethereum

Ethereum Interview Questions – Part 1

Ethereum Interview Questions Part - 1

Who is the founder of Ethereum? Vitalik Buterin What is the average block time in Ethereum? 14–20 seconds What is the average block size in Ethereum? 20–30KB What is the average number of transactions per second? 17–20 Is Ethereum a…

Sharding: The brain of Ethereum 2.0

Ethereum Sharding
In sharding, the history and the state of the whole Ethereum blockchain are divided into individual partitions called shards. Each shard will have its state and a history of transactions.

Beacon Chain: Heart of Ethereum 2.0

Ethereum Beacon Chain
Beacon Chain is the heart of Ethereum 2.0. It is the base upon which the rest components like Shard, eWasm, and cross-link will be built. It (PoS based chain) will run parallelly with the Mainnet (PoW based chain). Beacon chain is mainly made for the validators.

Proposing Future Ethereum Access Control

Ethereum Access Control

Dissecting current standards and proposing possible solutions for fully dynamic access control management in smart contracts Access control is a fundamental element to the security of software infrastructure. Enterprise applications need strict rules on who can do what, depending on…

Building An Ethereum Simulation Game – Part 2 – Playing Tennis Matches

An-Ethereum-Simulation-Game-Part-2
In part one, I outlined the idea for a Tennis Manager simulation game on the Ethereum Blockchain. I created the ERC721 Token and the TrainableTennisPlayer contract which enables owners to increase their player stats by training or resting. Since that article, I’ve written some unit tests and made a few small changes to those contracts. Events have been added to TrainableTennisPlayer to emit when players are trained or rested. Some utility functions that were initially written in TrainableTennisPlayer have been moved to the TennisPlayerBase.

Ethereum Smart Contracts and the Oracle Problem

Ethereum Oracle
“Provable”, formerly known as “Oraclize”, is a service known as an ‘oracle’, built specifically to address this problem. An oracle acts as a relay by aggregating data from external sources such as random number generators, price tickers & computational engines. Once the data is collected, the oracle feeds it into a smart contract.

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