<p>This type of transaction is very popular amongst exchanges with hotwallet scheme. They use hotwallet (in this case the 1A7... address looks like it) to send withdrawals to clients, the change is going back to the hotwallet. 
Most bitcoin wallets don't allow for this behavior, creating a fresh change address every transaction.</p>

CC BY-SA 4.0
2020-05-18T23:22:16.513Z
2020-05-18T23:22:16.513Z
Tony Sanak
<p>When looking at <a href="https://www.blockchain.com/btc/block/00000000000000000009eefb7971196febbea455b2bbc18ea65b57c64054fa03" rel="nofollow noreferrer">block 630873</a>, I noticed that some addresses seem to send BTC to themselves:</p>

<p><a href="https://i.sstatic.net/c536T.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/c536T.png" alt="enter image description here"></a></p>

<p>Am I misunderstanding the situation, or does <code>1A7tWftaGHohhGcJMVkkm4zAYnF53KjRnU</code> send large sums of BTC to itself? If that is the case, why is it beneficial?</p>

CC BY-SA 4.0
2020-05-18T23:42:06.370Z
Related: https://bitcoin.stackexchange.com/a/95773/5406
Murch
<change><address-reuse>
Why do some addresses seem to send bitcoin to themselves?
zabop
# Why do some addresses seem to send bitcoin to themselves?

(Asked by: username_0 on 2020-05-18)

When looking at [block 630873](https://www.blockchain.com/btc/block/00000000000000000009eefb7971196febbea455b2bbc18ea65b57c64054fa03), I noticed that some addresses seem to send BTC to themselves:

[![enter image description here](https://i.sstatic.net/c536T.png)](https://i.sstatic.net/c536T.png)

Am I misunderstanding the situation, or does `1A7tWftaGHohhGcJMVkkm4zAYnF53KjRnU` send large sums of BTC to itself? If that is the case, why is it beneficial?

**Tags:** change, address-reuse

> **Comments:**
> **username_1**: Related: https://bitcoin.stackexchange.com/a/95773/5406  

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## 1 answers

### Answer by username_2 on 2020-05-18. Score: 2 | Accepted answer

This type of transaction is very popular amongst exchanges with hotwallet scheme. They use hotwallet (in this case the 1A7... address looks like it) to send withdrawals to clients, the change is going back to the hotwallet.
Most bitcoin wallets don't allow for this behavior, creating a fresh change address every transaction.


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