user41513: The following article explains the process of "Merkle Audit Proofs of Certification". (Link to the article)

Is the process the same as "Merkle Proofs in Bitcoin" ? 
If their process is not the same, what are differences?


user90837: We have a unique merkle root for each block in Bitcoin. Next block's merkle root does not use the merkle root of the previous blocks as a proof. As a result we do not have old merkle tree hash and new merkle tree hash. Also, the way of pairwise hashing is different. If you look at Figure 2 in your link, the certificates d4 and d5 are at a higher level than d1-3. In Bitcoin, all the certificates would have been at the same level, resulting in hashing between i & j and k & k (yes, in case of odd number, we hash the same result with it self).
However, if you look in figure 5 of the link you attached, the way of providing proof that a certificate exists is the same way a proof is provide to a SPV node in Bitcoin.

41513: <p>The following article explains the process of <strong>"Merkle Audit Proofs of Certification"</strong>. (<a href="http://www.certificate-transparency.org/log-proofs-work" rel="nofollow noreferrer">Link to the article</a>)</p>

<ul>
<li>Is the process the <strong>same</strong> as <strong>"Merkle Proofs in Bitcoin"</strong> ? </li>
<li><strong>If</strong> their process is <strong>not</strong> the same, <strong>what are differences</strong>?</li>
</ul>
 90837: <p>We have a unique merkle root for each block in Bitcoin. Next block's merkle root does not use the merkle root of the previous blocks as a proof. As a result we do not have old merkle tree hash and new merkle tree hash. Also, the way of pairwise hashing is different. If you look at Figure 2 in your link, the certificates d4 and d5 are at a higher level than d1-3. In Bitcoin, all the certificates would have been at the same level, resulting in hashing between i &amp; j and k &amp; k (yes, in case of odd number, we hash the same result with it self).</p>

<p>However, if you look in figure 5 of the link you attached, the way of providing proof that a certificate exists is the same way a proof is provide to a SPV node in Bitcoin.</p>
