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is using a diagram of the Arecibo message that is suspiciously alike in its color-scheme as the one here. Obviously the Arecibo message itself may well be in the public domain. But it struck me that her color-coding is exactly the same color-coding as the one in your own illustration. If YOU devised the color-coding, then my readthrough (hurried, I admit) of the permissions granted seems to require that you be given credit. I have not been able to find that credit given in the video at the URL above. Is your copyright being infringed? I confess I don't know. It depends on whether your colors originate with you or come from the public domain, and on what arrangements the uploader at the URL above has made with you. I'm just concerned about the possibility of someone playing fast-and-loose with their sourcing.~~~~Jasper McJasper