Error of signature

[TADebastiani]

I'm trying to install Pragha on my Arch Linux but I received this error:

$ sudo pacman -S pragha
resolving dependencies...
looking for conflicting packages...

Packages (6) cdparanoia-10.2-5  glyr-1.0.8-1  gst-plugins-base-1.6.3-1  libclastfm-0.5-2  libvisual-0.4.0-6  pragha-1.3.3-1

Total Installed Size:  2.69 MiB

:: Proceed with installation? [Y/n] 
(6/6) checking keys in keyring                                                                                                                 [#######################################################################################] 100%
(6/6) checking package integrity                                                                                                               [#######################################################################################] 100%
error: libclastfm: signature from "Thorsten Töpper <atsutane@freethoughts.de>" is unknown trust
:: File /var/cache/pacman/pkg/libclastfm-0.5-2-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] 
error: glyr: signature from "Thorsten Töpper <atsutane@freethoughts.de>" is unknown trust
:: File /var/cache/pacman/pkg/glyr-1.0.8-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] 
error: pragha: signature from "Thorsten Töpper <atsutane@freethoughts.de>" is unknown trust
:: File /var/cache/pacman/pkg/pragha-1.3.3-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] 
error: failed to commit transaction (invalid or corrupted package (PGP signature))
Errors occurred, no packages were upgraded.

My system is Arch Linux x86_64 The Kernel Release: 4.4.1-1-ARCH

[matiasdelellis]

Hi @TADebastiani

I do not maintain packages on Archlinux.. Please, report the problem on Arch bugtracker or contact the maintainer..

Regards, Matias