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Re: coercion proof timestamping services




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In <[email protected]>, on 08/20/97 
   at 10:37 PM, Adam Back <[email protected]> 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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