<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Thu, Feb 23, 2017 at 6:58 PM, Peter Todd <span dir="ltr"><<a href="mailto:pete@petertodd.org" target="_blank">pete@petertodd.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5"><br></div></div>So to be clear, do you agree or disagree with me that you *can* extract a<br>
compact proof from a MMR that a given output is unspent?<br></blockquote><div><br></div><div>After wading through your logic on how updates are done, I agree that that can be done, but apples to apples compact proofs can also be done in a utxo commitment, and proofs of the validity of updates can be done in a utxo commitment, so there isn't any performance advantage to all that extra complexity.</div></div></div></div>