diff options
author | Jeff Garzik <jgarzik@exmulti.com> | 2012-09-22 03:28:05 -0400 |
---|---|---|
committer | bitcoindev <bitcoindev@gnusha.org> | 2012-09-22 07:28:15 +0000 |
commit | e3d5b82404ffeb74cfa185ecf29e6214b4452c58 (patch) | |
tree | 2058e4b6d6aae0be1dae2ba759c55e9bc11aa443 | |
parent | 1c6c6ac230737feb8942a65b8c7e398d8224559c (diff) | |
download | pi-bitcoindev-e3d5b82404ffeb74cfa185ecf29e6214b4452c58.tar.gz pi-bitcoindev-e3d5b82404ffeb74cfa185ecf29e6214b4452c58.zip |
[Bitcoin-development] Atomic coin swapping?
-rw-r--r-- | 94/d3aa6b56445bd6fa5b96c2fb8ef6d7296949ea | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/94/d3aa6b56445bd6fa5b96c2fb8ef6d7296949ea b/94/d3aa6b56445bd6fa5b96c2fb8ef6d7296949ea new file mode 100644 index 000000000..f9102c12b --- /dev/null +++ b/94/d3aa6b56445bd6fa5b96c2fb8ef6d7296949ea @@ -0,0 +1,85 @@ +Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] + helo=mx.sourceforge.net) + by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) + (envelope-from <jgarzik@exmulti.com>) id 1TFK8N-0006VW-TK + for bitcoin-development@lists.sourceforge.net; + Sat, 22 Sep 2012 07:28:15 +0000 +X-ACL-Warn: +Received: from mail-qc0-f175.google.com ([209.85.216.175]) + by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) + (Exim 4.76) id 1TFK8J-0006Uz-E8 + for bitcoin-development@lists.sourceforge.net; + Sat, 22 Sep 2012 07:28:15 +0000 +Received: by qcad10 with SMTP id d10so3318187qca.34 + for <bitcoin-development@lists.sourceforge.net>; + Sat, 22 Sep 2012 00:28:05 -0700 (PDT) +X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; + d=google.com; s=20120113; + h=mime-version:x-originating-ip:date:message-id:subject:from:to + :content-type:x-gm-message-state; + bh=8AJM3/sQjYWHn/WJDmCVBvn3qRuCRgL6DJ8sdK22bZI=; + b=MkT6AFmRlZp67qjvT4RPMrPk4AfbLDr83mdHa8QTJ7MEqPp9YssNEQGjC/qmAIYKke + E//IZyn9JNSxK9p5uBGuRAJERONX/Yrv120lDi8+ee8z7uZzucZ034mkF1aNgzZN55Xw + QdmHWqS+3IlvQYEsveHATpmHcS9gZS11jSH6q7E7/reRHTyxzoCRCsd8TrCZxKanH/xs + YdpWG+CVIQYsNWpbgDGYLIKBTVLzcdSkxKgUYZg4IgF6xZ5pkBi68AGhRl0kkWbgfcWn + odju/aGvNVjHQpSMirPW1cbaKEvE2pKcfzFvBeCSFekNXDqnX7eWESEbPLZtJl+usbSD + xVTg== +MIME-Version: 1.0 +Received: by 10.224.115.208 with SMTP id j16mr17829992qaq.54.1348298885616; + Sat, 22 Sep 2012 00:28:05 -0700 (PDT) +Received: by 10.49.97.6 with HTTP; Sat, 22 Sep 2012 00:28:05 -0700 (PDT) +X-Originating-IP: [2001:4830:1603:2:21c:c0ff:fe79:c8c2] +Date: Sat, 22 Sep 2012 03:28:05 -0400 +Message-ID: <CA+8xBpczY1DkgmHsVL8m30JaM1d+FwN_gpBhq6DFScm1nvLF5w@mail.gmail.com> +From: Jeff Garzik <jgarzik@exmulti.com> +To: Bitcoin Development <bitcoin-development@lists.sourceforge.net> +Content-Type: text/plain; charset=ISO-8859-1 +X-Gm-Message-State: ALoCoQmP3x4VdtsIkyEoPlU7TKlSXkyriB1Qu1qOiB2j4yJft4AM+dz3bJAr9u2834iYFIUpblkL +X-Spam-Score: 0.0 (/) +X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. + See http://spamassassin.org/tag/ for more details. +X-Headers-End: 1TFK8J-0006Uz-E8 +Subject: [Bitcoin-development] Atomic coin swapping? +X-BeenThere: bitcoin-development@lists.sourceforge.net +X-Mailman-Version: 2.1.9 +Precedence: list +List-Id: <bitcoin-development.lists.sourceforge.net> +List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>, + <mailto:bitcoin-development-request@lists.sourceforge.net?subject=unsubscribe> +List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum_name=bitcoin-development> +List-Post: <mailto:bitcoin-development@lists.sourceforge.net> +List-Help: <mailto:bitcoin-development-request@lists.sourceforge.net?subject=help> +List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>, + <mailto:bitcoin-development-request@lists.sourceforge.net?subject=subscribe> +X-List-Received-Date: Sat, 22 Sep 2012 07:28:16 -0000 + +Forum URL: https://bitcointalk.org/index.php?topic=112007.0 + +gmaxwell was talking about colored coins[1] in IRC recently. They are +potentially interesting in the context of distributed bonds[2], which +I am currently pursuing with pybond[3]. + +Here is the problem I am trying to solve, does the crowd have an answer? + +1. Alice transfers a 1-satoshi colored coin to Bob. +2. Bob transfers 100 BTC to Alice. May be restricted to 1 txout, if +that eases implementation details. +3. Steps #1 and #2 happen as an atomic unit, all-or-none. +4. Alice and Bob must both approve this atomic transfer of coins, with +appropriate signatures. + +Is this possible within the current bitcoin system? As far as I can +see, the answer is "no" but maybe I'm missing something. + +My best guess to the answer is "possible, but requires a new SIGHASH_* type"? + +[1] https://bitcointalk.org/index.php?topic=106449.0 +[2] https://bitcointalk.org/index.php?topic=92421.0 +[3] https://github.com/jgarzik/pybond + +-- +Jeff Garzik +exMULTI, Inc. +jgarzik@exmulti.com + + |