<p>You have enough entropy in Bitcoin private keys to make this possibility extremely unlikely (just like with non-vanity address). </p>

<p>A nice chapter on vanity addresses (their generation, security etc) can be found at: <a href="http://chimera.labs.oreilly.com/books/1234000001802/ch04.html#_vanity_addresses" rel="nofollow">http://chimera.labs.oreilly.com/books/1234000001802/ch04.html#_vanity_addresses</a>.</p>

CC BY-SA 3.0
2016-07-15T09:44:25.617Z
2016-07-15T09:44:25.617Z
hartmut
<p>Theres a possibility, its still unlikely.</p>

<p>heres a couple of attempts.  Not quite as many characters since it will take to long.</p>

<p>1AbcDeF22LQFTudvxEPzPUo4LQsNLVUUGT</p>

<p>1ABcDefEJv156aq32SmQo8aU4EVPHqwxV4</p>

<p>Case sensitive will take longer.</p>

<p>1ABCDEkreuP3HqnqEivk8NQzLw5afz3mXW</p>

<p><a href="http://directory.io/" rel="nofollow">http://directory.io/</a> has a list of all bitcoin public/private keys</p>

<p>still looking for an atom in the galaxy.</p>

CC BY-SA 3.0
2016-07-16T08:20:14.463Z
Wait, I thought directory.io was fake? https://directory.io/faq Here it says its a joke.
MCCCS
CC BY-SA 3.0
2016-07-18T16:29:07.080Z
@MCCCS it is a joke, but the data generated is real. It's just proving a point that being able to generate the data doesn't really help you, there are still so many addresses that it's impossible to search.
morsecoder
CC BY-SA 3.0
2016-07-16T01:39:38.887Z
2016-07-16T01:39:38.887Z
OpticBit
<p>Imagine that there are two really strong computers that try to find an address starting with <code>1ABCDEFGH</code>. Is there a possibility does that two computer find the same private key?</p>

<address><vanity-address><address-generation><vanitygen>
Vanity generator
MCCCS
# Vanity generator

(Asked by: username_0 on 2016-07-15)

Imagine that there are two really strong computers that try to find an address starting with `1ABCDEFGH`. Is there a possibility does that two computer find the same private key?

**Tags:** address, vanity-address, address-generation, vanitygen


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## 2 answers

### Answer by username_1 on 2016-07-15. Score: 0 | Accepted answer

You have enough entropy in Bitcoin private keys to make this possibility extremely unlikely (just like with non-vanity address).

A nice chapter on vanity addresses (their generation, security etc) can be found at: <http://chimera.labs.oreilly.com/books/1234000001802/ch04.html#_vanity_addresses>.


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### Answer by username_2 on 2016-07-16. Score: 0

Theres a possibility, its still unlikely.

heres a couple of attempts. Not quite as many characters since it will take to long.

1AbcDeF22LQFTudvxEPzPUo4LQsNLVUUGT

1ABcDefEJv156aq32SmQo8aU4EVPHqwxV4

Case sensitive will take longer.

1ABCDEkreuP3HqnqEivk8NQzLw5afz3mXW

<http://directory.io/> has a list of all bitcoin public/private keys

still looking for an atom in the galaxy.

> **Comments:**
> **username_0**: Wait, I thought directory.io was fake? https://directory.io/faq Here it says its a joke.  
> **username_3**: @username_0 it is a joke, but the data generated is real. It's just proving a point that being able to generate the data doesn't really help you, there are still so many addresses that it's impossible to search.  

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