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Date: Wed, 30 Jul 2014 17:50:22 -0400
From: Alan Reiner <etotheipi@gmail.com>
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Subject: [Bitcoin-development] [ANN] Armory 0.92 with Decentralized
	Multi-sig and Simulfunding
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--------------030108010808010808040702
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Hi Everyone,

The Armory team is pleased to announce the official release of our
decentralized multi-signature interface, called "Lockboxes".  It is a
"true" multi-signature transaction interface:

  * Decentralized multi-sig (no third-party servers or signers needed)
  * Any multi-sig from 1-of-2 up to 7-of-7
  * Any or all of the signing devices can be *offline*
  * All private keys can be generated and managed independently
  * Works with existing Armory wallets
  * Simultaneous funding ("simulfunding") features for escrow and
    contracts (basically CoinJoin)
  * All wrapped up in a nice graphical user interface!

Armory 0.92 includes a GUI for creating, funding and spending from
multi-signature lockboxes, anything from 1-of-2 up to 7-of-7.  All
private keys can be generated independently and never have to be
co-located.    Most importantly, any number of the signing keys can be
created and managed on offline computers!  Also, all transaction and
signature data is communicated directly between parties/devices using
ASCII-armored blocks of text, so no third-party servers/services are
needed (though, in the future, we hope to provide an optional service to
help synchronize the data between parties).

The release also includes the ability to do simultaneous funding
("simulfunding") which is basically CoinJoin through a GUI, but intended
to be used for contracts and escrow.  Each party creates a "promissory
note" (which is basically just a list of UTXOs and a change address),
and those can be merged into a single transaction to be signed by all
funders.  Either all contributions are made simutaneously, or none of
them are.   There is no other outcome.  This means that no trust is
required between the simulfunders.  It is a basic contract enforced by
the bitcoin network itself.

Simulfunding would normally be used in conjuction with multi-signature
lockboxes -- two parties that don't trust each other together create a
lockbox, and then simultaneously fund it (and subsequently spend it)
according to some agreement.  However, it can actually be used to
simulfund any address.  To promote this feature, Armory Technologies Inc
is offering to match up to 20 BTC in donations to the EFF, FSF, College
Crypto Network, Chamber of Digital Commerce, and the Bitcoin Foundation
(and hopefully wikipedia, as a late addition to the list).    We posted
a list of ATI "promissory notes" for matching donations on our
website:   https://bitcoinarmory.com/donation-match-list/

We're very excited about this release, which has been in testing for
over three months, and we've been using for management of company funds
between officers for the last two months.  We have not seen anything
else that comes close to matching the flexibility and security afforded
by it (and without being exceptionally inconvenient!).   See our
tutorials, and especially the FAQ at the end: 

https://bitcoinarmory.com/about/using-lockboxes
https://bitcoinarmory.com/about/using-lockboxes/#faq
 
We hope that people will try it out and provide feedback.  Maybe even
match some donations!  We've already matched 3 BTC so far and it was
announced less than 24 hours ago. 

Cheers,
-Alan


------
Press Release: 
http://finance.yahoo.com/news/armory-releases-first-decentralized-multi-233500704.html
------
Changelog:

*VERSION 0.92**
**Released July 29, 2014**
*

    - *Multi-Signature Lockboxes!*
          Full-featured interface for creating multi-signature addresses,
          putting money into them, and collecting signatures to spend them.
          See our tutorials at:
https://bitcoinarmory.com/about/using-lockboxes/

    - *Simulfunding for Addresses and Lockboxes*
          Use the "Multi-Sig" menu to do prepare simulfunding to any
          arbitrary address.  Or click on the "Simul" checkbox in the
          lockbox manager if you are simulfunding a lockbox.  As a promotion
          for this feature we are matching up to 20 BTC worth donations
          to organizations that support Bitcoin, digital security, online
          freedoms, and open-source software.  See our donation list (with
          instructions): https://bitcoinarmory.com/about/donation-match-list

    - *Improved Mac/OSX Stability*
          We merged a couple Qt4 patches that dramatically improved
          compatibility on OSX 10.7 and newer.  Should work with the
          upcoming release of OSX 10.10.

    - *Armory Daemon/API Upgrades (Beta)*
          The Armory API has been upgraded substantially since version 0.91.
          This version has tons of new functionality matching bitcoind,
          as well as unique functionality including lockbox operations.
          Plan to have complete functionality implemented and tested by
          version 0.93.

    - *Upgraded Transaction History Export to CSV*
          Added running balance reporting for individual and all wallets.
          Also fixed a bug where internal transfers within wallets were
          not being reported properly.

    - *Root PUBLIC Key Export*
          You can now export just the root public key data that allows
          you to reconstruct your watching-only wallet.  It is five lines
          that are easily printed or copied by hand.  Could be used to
          provide someone a chain of addresses for multiple payments.


--------------030108010808010808040702
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

<html>
  <head>

    <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    Hi Everyone,<br>
    <br>
    The Armory team is pleased to announce the official release of our
    decentralized multi-signature interface, called "Lockboxes".&nbsp; It is
    a "true" multi-signature transaction interface:<br>
    <ul>
      <li>Decentralized multi-sig (no third-party servers or signers
        needed)</li>
      <li>Any multi-sig from 1-of-2 up to 7-of-7</li>
      <li>Any or all of the signing devices can be *offline*</li>
      <li>All private keys can be generated and managed independently</li>
      <li>Works with existing Armory wallets<br>
      </li>
      <li>Simultaneous funding ("simulfunding") features for escrow and
        contracts (basically CoinJoin)<br>
      </li>
      <li>All wrapped up in a nice graphical user interface!<br>
      </li>
    </ul>
    Armory 0.92 includes a GUI for creating, funding and spending from
    multi-signature lockboxes, anything from 1-of-2 up to 7-of-7.&nbsp; All
    private keys can be generated independently and never have to be
    co-located. &nbsp;&nbsp; Most importantly, any number of the signing keys can
    be created and managed on offline computers!&nbsp; Also, all transaction
    and signature data is communicated directly between parties/devices
    using ASCII-armored blocks of text, so no third-party
    servers/services are needed (though, in the future, we hope to
    provide an optional service to help synchronize the data between
    parties).<br>
    <br>
    The release also includes the ability to do simultaneous funding
    ("simulfunding") which is basically CoinJoin through a GUI, but
    intended to be used for contracts and escrow.&nbsp; Each party creates a
    "promissory note" (which is basically just a list of UTXOs and a
    change address), and those can be merged into a single transaction
    to be signed by all funders.&nbsp; Either all contributions are made
    simutaneously, or none of them are.&nbsp;&nbsp; There is no other outcome.&nbsp;
    This means that no trust is required between the simulfunders.&nbsp; It
    is a basic contract enforced by the bitcoin network itself.<br>
    <br>
    Simulfunding would normally be used in conjuction with
    multi-signature lockboxes -- two parties that don't trust each other
    together create a lockbox, and then simultaneously fund it (and
    subsequently spend it) according to some agreement.&nbsp; However, it can
    actually be used to simulfund any address.&nbsp; To promote this feature,
    Armory Technologies Inc is offering to match up to 20 BTC in
    donations to the EFF, FSF, College Crypto Network, Chamber of
    Digital Commerce, and the Bitcoin Foundation (and hopefully
    wikipedia, as a late addition to the list).&nbsp;&nbsp;&nbsp; We posted a list of
    ATI "promissory notes" for matching donations on our website:&nbsp;&nbsp;
    <a class="moz-txt-link-freetext" href="https://bitcoinarmory.com/donation-match-list/">https://bitcoinarmory.com/donation-match-list/</a><br>
    <br>
    We're very excited about this release, which has been in testing for
    over three months, and we've been using for management of company
    funds between officers for the last two months.&nbsp; We have not seen
    anything else that comes close to matching the flexibility and
    security afforded by it (and without being exceptionally
    inconvenient!).&nbsp;&nbsp; See our tutorials, and especially the FAQ at the
    end:&nbsp; <br>
    <br>
    <a class="moz-txt-link-freetext" href="https://bitcoinarmory.com/about/using-lockboxes">https://bitcoinarmory.com/about/using-lockboxes</a><br>
    <a class="moz-txt-link-freetext" href="https://bitcoinarmory.com/about/using-lockboxes/#faq">https://bitcoinarmory.com/about/using-lockboxes/#faq</a><br>
    &nbsp;<br>
    We hope that people will try it out and provide feedback.&nbsp; Maybe
    even match some donations!&nbsp; We've already matched 3 BTC so far and
    it was announced less than 24 hours ago.&nbsp; <br>
    <br>
    Cheers,<br>
    -Alan<br>
    <br>
    <br>
    ------<br>
    Press Release:&nbsp;
<a class="moz-txt-link-freetext" href="http://finance.yahoo.com/news/armory-releases-first-decentralized-multi-233500704.html">http://finance.yahoo.com/news/armory-releases-first-decentralized-multi-233500704.html</a><br>
    ------<br>
    Changelog:<br>
    <br>
    <b>VERSION 0.92</b><b><br>
    </b><b>Released July 29, 2014</b><b><br>
    </b><br>
    <br>
    &nbsp;&nbsp;&nbsp; - <b>Multi-Signature Lockboxes!</b><br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; Full-featured interface for creating multi-signature
    addresses,<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; putting money into them, and collecting signatures to
    spend them.<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; See our tutorials at:
    <a class="moz-txt-link-freetext" href="https://bitcoinarmory.com/about/using-lockboxes/">https://bitcoinarmory.com/about/using-lockboxes/</a><br>
    <br>
    &nbsp;&nbsp;&nbsp; - <b>Simulfunding for Addresses and Lockboxes</b><br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; Use the "Multi-Sig" menu to do prepare simulfunding to any<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; arbitrary address.&nbsp; Or click on the "Simul" checkbox in
    the<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; lockbox manager if you are simulfunding a lockbox.&nbsp; As a
    promotion<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; for this feature we are matching up to 20 BTC worth
    donations<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; to organizations that support Bitcoin, digital security,
    online<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; freedoms, and open-source software.&nbsp; See our donation list
    (with<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; instructions):
    <a class="moz-txt-link-freetext" href="https://bitcoinarmory.com/about/donation-match-list">https://bitcoinarmory.com/about/donation-match-list</a><br>
    <br>
    &nbsp;&nbsp;&nbsp; - <b>Improved Mac/OSX Stability</b><br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; We merged a couple Qt4 patches that dramatically improved<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; compatibility on OSX 10.7 and newer.&nbsp; Should work with the<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; upcoming release of OSX 10.10.<br>
    <br>
    &nbsp;&nbsp;&nbsp; - <b>Armory Daemon/API Upgrades (Beta)</b><br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; The Armory API has been upgraded substantially since
    version 0.91.<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; This version has tons of new functionality matching
    bitcoind,<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; as well as unique functionality including lockbox
    operations.<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; Plan to have complete functionality implemented and tested
    by<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; version 0.93.<br>
    <br>
    &nbsp;&nbsp;&nbsp; - <b>Upgraded Transaction History Export to CSV</b><br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; Added running balance reporting for individual and all
    wallets.<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; Also fixed a bug where internal transfers within wallets
    were<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; not being reported properly.<br>
    <br>
    &nbsp;&nbsp;&nbsp; - <b>Root PUBLIC Key Export</b><br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; You can now export just the root public key data that
    allows<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; you to reconstruct your watching-only wallet.&nbsp; It is five
    lines<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; that are easily printed or copied by hand.&nbsp; Could be used
    to<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; provide someone a chain of addresses for multiple
    payments.<br>
    <br>
  </body>
</html>

--------------030108010808010808040702--