From: "William H. Geiger III" <whgiii@amaranth.com>
Date: Thu, 21 Aug 1997 08:00:57 +0800
To: Adam Back <aba@dcs.ex.ac.uk>
Subject: Re: coercion proof timestamping services
In-Reply-To: <199708202137.WAA00738@server.test.net>
Message-ID: <199708202358.SAA23598@mailhub.amaranth.com>
MIME-Version: 1.0
Content-Type: text/plain



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In <199708202137.WAA00738@server.test.net>, on 08/20/97 
   at 10:37 PM, Adam Back <aba@dcs.ex.ac.uk> said:

>One solution to this is for the time-stamper to publish all
>time-stamps (they are quite small being detached signatures), and publish
>a siganature on all the time-stamps stored in one file each day.  Perhaps
>even publish the signature in a newspaper.  Anyone with that newspaper,
>or an archive of the master signature only, will be able to verify any
>claimed time-stamps -- the publically published hash (in the signature)
>must match the time-stamps archived for that day.

This is how Stamper works. The time stampes are published to various NG's
& mailling lists once a week.

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William H. Geiger III  http://www.amaranth.com/~whgiii
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