Bewildered Arch newbie needs help w/ Arch Forums registration question

I'm trying to register an account on Arch Linux Forums. In order to complete the registration, you have to answer the following question:

What is the output of "date -u +%V$(uname)|sha256sum|sed 's/\W//g'"?

So, I went and ran date -u +%V$(uname)|sha256sum|sed 's/\W//g' in the terminal (I'm using Tails OS at the moment -- not sure if that's the problem, I figured any Linux distro would work) and got this:

ba7fb830d2cbbed734b7991b77535ce164caf3ce7f38fe9a29 20137b777fee19

But, when I pasted the string above into the answer field of the registration, I got an error telling me that my answer was wrong.

This is probably a dumb question, and I'm sure whatever I'm doing wrong is blatantly obvious and I just don't see it. (Stop laughing :( ) Is it because I'm using a different kind of Linux to run the command? Or is it something else?

Thanks in advance.

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