---
title: "Discussion on \"How Hashcash Works: Proof of Work Before Bitcoin\" | Hashnode"
description: "Discussion on \"How Hashcash Works: Proof of Work Before Bitcoin\". Learn how Adam Back's Hashcash introduced asymmetric Proof of Work to stop email spam, and how Satoshi Nakamoto adapted it to create Bitcoin consensus."
url: "https://hashnode.com/posts/how-hashcash-works-proof-of-work/6ad773051e3312af7644b347"
---

[Feed](https://hashnode.com/feed) /

Discussion

# [How Hashcash Works: Proof of Work Before Bitcoin](https://doogal.dev/how-hashcash-works-proof-of-work?utm_source=hashnode&utm_medium=feed)

Learn how Adam Back's Hashcash introduced asymmetric Proof of Work to stop email spam, and how Satoshi Nakamoto adapted it to create Bitcoin consensus.

Oct 20 · 4 min read · doogal.dev  
Read the article

-   [#cryptography](https://hashnode.com/tag/cryptography)
-   [#proofofwork](https://hashnode.com/tag/proofofwork)
-   [#bitcoin](https://hashnode.com/tag/bitcoin)
-   [#computerscience](https://hashnode.com/tag/computerscience)

## Written by

[Doogal Simpson](https://hashnode.com/@doogal)

@doogal

  
[View profile](https://hashnode.com/@doogal)

"hey doogal, what is .... ?"

## Responses

Markdown supported · ⌘↵ to post

No responses yet.