---
title: "Safi Ullah (@safikhan) | Hashnode"
description: "I love blogging. Read the latest articles by Safi Ullah on Hashnode."
url: "https://hashnode.com/@safikhan"
---

@safikhan

# Safi Ullah

@safikhan · Joined October 2022

I love blogging.

### [What Is a Blockchain? And How Does a Blockchain Work?](https://safikhan12155.hashnode.dev/what-is-a-blockchain-and-how-does-a-blockchain-work?utm_source=hashnode&utm_medium=feed)

A blockchain is a distributed database or ledger that is shared among the nodes of a computer network. As a database, a blockchain stores information electronically in digital format. Blockchains are best known for their crucial role in cryptocurrenc...

6 min read · [safikhan12155.hashnode.dev](https://safikhan12155.hashnode.dev/what-is-a-blockchain-and-how-does-a-blockchain-work?utm_source=hashnode&utm_medium=feed)

[6](https://hashnode.com/posts/what-is-a-blockchain-and-how-does-a-blockchain-work/6363845f2b9f57890ab96661) [Nov 3, 2022](https://hashnode.com/posts/what-is-a-blockchain-and-how-does-a-blockchain-work/6363845f2b9f57890ab96661)