<blockquote>
  <p>Are we just relying on big numbers(2^160)? </p>
</blockquote>

<p>Yes</p>

<blockquote>
  <p>or Does Bitcoin system has some function to prevent duplicate?</p>
</blockquote>

<p>No</p>

CC BY-SA 3.0
2017-11-16T13:18:35.443Z
2017-11-16T13:18:35.443Z
amaclin
<p>Let's assume that I'm going to make a wallet through Electrum that has some Bitcoin address.</p>

<p>So then, How Electrum do know that is not duplicated(Already owned by another person)?</p>

<p>Are we just relying on big numbers(2^160)? or Does Bitcoin system has some function to prevent duplicate?</p>

<p>Thank you for listening my question. No offense! Just curious about the function or how it works!</p>

<wallet><address-generation>
How do wallets know that address is not duplicated if I'm going to make one?
bitcoinlearner
# How do wallets know that address is not duplicated if I'm going to make one?

(Asked by: username_0 on 2017-11-16)

Let's assume that I'm going to make a wallet through Electrum that has some Bitcoin address.

So then, How Electrum do know that is not duplicated(Already owned by another person)?

Are we just relying on big numbers(2^160)? or Does Bitcoin system has some function to prevent duplicate?

Thank you for listening my question. No offense! Just curious about the function or how it works!

**Tags:** wallet, address-generation


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## 1 answers

### Answer by username_1 on 2017-11-16. Score: 1 | Accepted answer

> Are we just relying on big numbers(2^160)?

Yes

> or Does Bitcoin system has some function to prevent duplicate?

No


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