---
layout: forum
title: 'Re: Proof-of-work difficulty increasing'
grand_parent: Forum Posts
parent: Bitcoin Forum
nav_order: 217
date: 2010-07-16 17:29:28 UTC
original: https://bitcointalk.org/index.php?topic=43.msg3537#msg3537
---

# Re: Proof-of-work difficulty increasing

---

```
Re: Proof-of-work difficulty increasing
July 16, 2010, 05:29:28 PM

Yes, about 20 hours.  (120 conf / 6 blocks per hour = 20 hours)  That's the normal length of time before you can spend it.  You know long before that that you won one.
```