Proof for a creation date

[Roman Zeyde]

You can also use OpenTimestamps service as described here:
https://petertodd.org/2016/opentimestamps-announcement

On Mon, Dec 5, 2016 at 2:11 PM, Bertram Scharpf <lists at bertram-scharpf.de>
wrote:

> On Thursday, 01. Dec 2016, 19:59:15 -0800, Schlacta, Christ wrote:
> > On Dec 1, 2016 7:43 PM, "Bertram Scharpf" <lists at bertram-scharpf.de>
> wrote:
> > >
> > > we all know that kidnappers do publish a picture of their
> > > hostage holding up a todays newpaper. The purpose of this is
> > > to proof that the victim was alive _after_ a certain point
> > > of time. I want to do the opposite. I want to make evidence
> > > that I created a document _before_ a certain point of time.
>
> Thank you all for your detailed answers.
>
> I might resume it to two possibilities to accomplish the task:
>
>   - Post a digest to a site where you cannot withdraw it
>     ever and where it can be retrieved by everybody. This
>     could be a Github issue, on Reddit or Twitter or maybe
>     even on the GnuPG mailing list.
>
>     The disadvantage is that you are dependent on the
>     provider of the site to continue the service and that
>     your information can be found there. This could most
>     notably become a problem because the post is, in the
>     end, an abuse of the forum.
>
>   - Let one or more people sign your document and provide
>     the signatures yourself.
>
>     The weak point is how to find these people and to make
>     them do what you want. The service
>     <http://www.itconsult.co.uk/stamper.htm> makes
>     signatures in a format that is no longer supported.
>
> Maybe a combination of both methods is a good way to handle
> the disadvantages.
>
> Bertram
>
>
> --
> Bertram Scharpf
> Stuttgart, Deutschland/Germany
> http://www.bertram-scharpf.de
>
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>
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