<p>No the blockchain does not contain IP addresses.</p>
<p>The bitcoin node or bitcoin API server (if used) that you initially send your transaction will know the IP though and they could keep it in their own databases.</p>
<p>For anonymous buying/selling you can use the <a href="https://www.torproject.org/" rel="nofollow noreferrer">Tor</a> network. You may also be interested in mixing to <a href="https://web.archive.org/web/20230130204901/https://darknetmarkets.org/a-simple-guide-to-safely-and-effectively-mixing-bitcoins/" rel="nofollow noreferrer">anonymize</a> bitcoin address (e.g. if you bought your bitcoins from an online exchange that has your IP plus much more).</p>

CC BY-SA 4.0
2016-01-13T23:34:08.997Z
2024-06-17T22:02:55.993Z
2024-06-17T22:02:55.993Z
karask
<p>If one person sold bitcoins to another person using a smartphone, will a record of the IP addresses of the devices they used be seen in the blockchain?</p>

<blockchain><address>
Anonymous Buying/Selling
user31963
# Anonymous Buying/Selling

(Asked by: username_0 on 2016-01-13)

If one person sold bitcoins to another person using a smartphone, will a record of the IP addresses of the devices they used be seen in the blockchain?

**Tags:** blockchain, address


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## 1 answers

### Answer by username_1 on 2016-01-13. Score: 2

No the blockchain does not contain IP addresses.

The bitcoin node or bitcoin API server (if used) that you initially send your transaction will know the IP though and they could keep it in their own databases.

For anonymous buying/selling you can use the [Tor](https://www.torproject.org/) network. You may also be interested in mixing to [anonymize](https://web.archive.org/web/20230130204901/https://darknetmarkets.org/a-simple-guide-to-safely-and-effectively-mixing-bitcoins/) bitcoin address (e.g. if you bought your bitcoins from an online exchange that has your IP plus much more).


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