- Details
- Category: Bitcoin Mining
- Published: Wednesday, 25 November 2015 08:12
- Written by Myric Wilson
- Hits: 2157

## What is Proof of Work?

A proof of work is a piece of data which was difficult (costly, time-consuming) to produce so as to satisfy certain requirements. It must be trivial to check whether data satisfies said requirements.

Producing a proof of work can be a random process with low probability, so that a lot of trial and error is required on average before a valid proof of work is generated. Bitcoin uses the Hashcash proof of work.