See also: http://lsr.di.unimi.it/LSR/Item?id=1113
Cheers,
Pierre

Le jeu. 21 mai 2020 à 11:04, Federico Bruni <f...@inventati.org> a écrit :

> Il giorno gio 21 mag 2020 alle 10:33, Valentin Villenave
> <valen...@villenave.net> ha scritto:
> > All you
> > need to have is a way of proving your anteriority if anyone were to
> > come and claim they’ve written it instead of you.
>
> A modern alternative to sending a sealed package is digital
> watermarking.
>
> Francesco, as you are italian, you may want to try this "almost free"
> service:
> https://www.costozero.org/wai/copyzero.html
> https://www.costozero.org/wai/u2.html
>
> or buy a smart card to do it yourself
>
>
>
>
>

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