Here's a video of the animation playing: https://www.youtube.com/watch?v=zMzwmdaloXc
It was a lot of fun to put together, and I know where was a lot of human thought put into the message, but after working with the data of this message for dozens (hundreds?) of hours finessing it and making it as small as possible, the longer I looked at it the less I believe any alien receiving it would be able to decode the meaning we communicated in it. I imagine it's evidence of terrestrial intelligence for aliens who might wonder if they're alone, but I'm not sure how well the intended meaning of the message itself will come through to a non-human being if it's not even obvious to a human being that already knows what it is.
 47:00 https://youtu.be/_ZG8HBuDjgc?t=47m10s
I can wonder how many of those Wampum belts which remain are still well understood?
(Given the use of Wampum to store and transfer knowledge, the reason Native Americans were so eager to trade beaver pelts and such for small colorful beads from Europe was essentially equivalent to people today being willing to trade used empty Starbucks coffee cups for new Flash IC storage chips...)
If we find aliens it will be more like "Don't let the Great Filter get you and maybe we'll have a really slow conversation."
What threat would we be to them?
To ameliorate that I would suggest reading up on other theories. For example great filter or simulation argument.
A more mundane reason might be that interstellar travel and communication turns out to be impossible (or near enough).
On interstellar timescales, any civilization that fears we will develop interstellar offensive capabilities would need to also seriously consider the possibility that we would survive their first strike.
Why attempt to retaliate? This would be like waging war on Italy for atrocities committed in roman times wouldn't it? Even if you could guarantee success, you have no information about the moral culpability of the target, and would have to assume they have lifespans many multiples of humans to assume any such quality, wouldn't you?
Because retaliation shifts our foe's "risk of destruction if drone sent" vs "risk of destruction if drone not sent" tradeoff toward "don't attack".
I don't find this scenario remotely convincing. A good premise for a scifi novel though.
But then humanity is such, exploring, connecting...and fighting :)
It's very hard to say how sensitive listeners might become given enough time for technological development.
Why not pick the square of a prime number, so that it can't be arranged to wrong way?
(Possibly the only computer made ...note that qualifier, please ... that required most users to learn a number base in order to operate it.)