Re: registering a composition

[Federico Bruni]

Il giorno gio 21 mag 2020 alle 10:33, Valentin Villenave 
<address@hidden> 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