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Date: Sat, 4 Oct 2014 15:26:39 +0200
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From: Mike Hearn <mike@plan99.net>
To: Kristov Atlas <kristovatlas.lists@gmail.com>
Content-Type: multipart/alternative; boundary=089e01183cbab128fd050498ccc3
Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] bitcoinj 0.12
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Hey Kristov,

> I hate to reply to a release that includes a huge number of new features
> with yet another feature request, so -- with apologies -- any plans for
> bitcoinj to support stealth address sending and/or receiving?
>
Stealth addresses and SPV don't mix well, so no. I wrote up a description
of how to do something similar with the payment protocol here:

https://medium.com/@octskyward/ecdh-in-the-payment-protocol-cb2f81962c1b

Because you can send data around outside the block chain on private
channels, with the pp the same issues don't crop up.

At the moment there are no concrete plans what goes into the next release.
I will be focusing on fully launching Lighthouse and crowdfunding for
decentralisation/crypto related projects, so I won't be doing any major
feature work on bitcoinj. Luckily it's become quite an active project now
and there are lots of contributors, so things won't stand still.

If I were to tackle a big project the next one would not be privacy
related. It'd be refactoring the wallet so it doesn't store transactions
directly anymore, just unspent outputs. Bitcoinj has always been largely
driven by the needs of Andreas' mobile app, and right now the top user
reported problem there is people hitting the scalability limits of the
current design (e.g. they are mining directly into their phone's wallet).

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<div dir=3D"ltr">Hey Kristov,<div class=3D"gmail_extra"><div class=3D"gmail=
_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style=
:solid;padding-left:1ex"><p dir=3D"ltr">I hate to reply to a release that i=
ncludes a huge number of new features with yet another feature request, so =
-- with apologies -- any plans for bitcoinj to support stealth address send=
ing and/or receiving?</p></blockquote><div>Stealth addresses and SPV don=
9;t mix well, so no. I wrote up a description of how to do something simila=
r with the payment protocol here:</div><div><br></div><div><a href=3D"https=
://medium.com/@octskyward/ecdh-in-the-payment-protocol-cb2f81962c1b">https:=
//medium.com/@octskyward/ecdh-in-the-payment-protocol-cb2f81962c1b</a><br><=
/div><div><br></div><div>Because you can send data around outside the block=
 chain on private channels, with the pp the same issues don&#39;t crop up.<=
/div><div><br></div><div>At the moment there are no concrete plans what goe=
s into the next release. I will be focusing on fully launching Lighthouse a=
nd crowdfunding for decentralisation/crypto related projects, so I won&#39;=
t be doing any major feature work on bitcoinj. Luckily it&#39;s become quit=
e an active project now and there are lots of contributors, so things won&#=
39;t stand still.</div><div><br></div><div>If I were to tackle a big projec=
t the next one would not be privacy related. It&#39;d be refactoring the wa=
llet so it doesn&#39;t store transactions directly anymore, just unspent ou=
tputs. Bitcoinj has always been largely driven by the needs of Andreas&#39;=
 mobile app, and right now the top user reported problem there is people hi=
tting the scalability limits of the current design (e.g. they are mining di=
rectly into their phone&#39;s wallet).</div><div><br></div></div></div></di=
v>

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