<p>Bitcoin does not have confidential transactions.</p>

CC BY-SA 4.0
2019-03-18T16:11:45.087Z
I mean this feature: https://people.xiph.org/~greg/confidential_values.txt 
where, it's talking about **Confidential Transactions** as a cryptographic tool to improve the privacy and security of Bitcoin. Apparently, it's written by you :)
Questioner
CC BY-SA 4.0
2019-04-15T23:46:26.250Z
@Questioner Yes, a writeup of a technique exists which could be used in theory, but it's not even a proposal, much less in use, so the question makes no sense.
Pieter Wuille
CC BY-SA 4.0
2019-03-16T22:08:15.763Z
2019-03-16T22:08:15.763Z
G. Maxwell
<p>According to the <strong>Ring Confidential Transactions</strong> research paper of <strong>Monero</strong> (<a href="http://file:///C:/Users/KX5710/Downloads/34-394-1-PB.pdf" rel="nofollow noreferrer">Link to the paper</a>), in section <strong><em>1.5. Ring Confidential Transactions Overview</em></strong>, it is mentioned:</p>

<blockquote>
  <p>"We describe a modification to the Monero protocol, a proof-of-work
  cryptocurrency extending the original CryptoNote protocol. The
  modification is based on <strong>Confidential Transactions</strong> which are used on
  the Elements side-chain in <strong>Bitcoin</strong>, <strong>except</strong> it <strong>allows</strong> for their use in
  <strong>ring signatures</strong> <a href="https://people.xiph.org/~greg/confidential_values.txt" rel="nofollow noreferrer"> [cited to this article as reference]</a>. Therefore, the modification is given the obvious
  name of <strong>Ring Confidential Transactions</strong> (Ring CT) for Monero."</p>
</blockquote>

<p>However, in the cited article (<a href="https://people.xiph.org/~greg/confidential_values.txt" rel="nofollow noreferrer">Link</a>), it is mentioned that the <strong>Ring</strong> signature is used in <strong>Confidential Transactions of Bitcoin too</strong>.</p>

<p>If so, why in Monero's paper it is mentioned that <em>"<strong>except</strong> it allows for their use in ring signatures"</em> as its <strong>difference</strong> with <strong>Bitcoin Confidential Transactions</strong> ?</p>

<p>Is "<strong>Ring</strong> Confidential Transactions" used in both Bitcoin and Monero?</p>

<monero><confidential-transactions>
Is "Ring Signature" used in "Confidential Transactions" of the Bitcoin?
Questioner
# Is "Ring Signature" used in "Confidential Transactions" of the Bitcoin?

(Asked by: username_0 on 2019-02-13)

According to the **Ring Confidential Transactions** research paper of **Monero** ([Link to the paper](http://file:///C:/Users/KX5710/Downloads/34-394-1-PB.pdf)), in section ***1.5. Ring Confidential Transactions Overview***, it is mentioned:

> "We describe a modification to the Monero protocol, a proof-of-work
> cryptocurrency extending the original CryptoNote protocol. The
> modification is based on **Confidential Transactions** which are used on
> the Elements side-chain in **Bitcoin**, **except** it **allows** for their use in
> **ring signatures**  [[cited to this article as reference]](https://people.xiph.org/~greg/confidential_values.txt). Therefore, the modification is given the obvious
> name of **Ring Confidential Transactions** (Ring CT) for Monero."

However, in the cited article ([Link](https://people.xiph.org/~greg/confidential_values.txt)), it is mentioned that the **Ring** signature is used in **Confidential Transactions of Bitcoin too**.

If so, why in Monero's paper it is mentioned that *"**except** it allows for their use in ring signatures"* as its **difference** with **Bitcoin Confidential Transactions** ?

Is "**Ring** Confidential Transactions" used in both Bitcoin and Monero?

**Tags:** monero, confidential-transactions


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## 1 answers

### Answer by username_1 on 2019-03-16. Score: 0

Bitcoin does not have confidential transactions.

> **Comments:**
> **username_0**: I mean this feature: https://people.xiph.org/~greg/confidential_values.txt  where, it's talking about **Confidential Transactions** as a cryptographic tool to improve the privacy and security of Bitcoin. Apparently, it's written by you :)  
> **username_2**: @username_0 Yes, a writeup of a technique exists which could be used in theory, but it's not even a proposal, much less in use, so the question makes no sense.  

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