In our ongoing academic endeavor, we are aggregating every message historically transmitted by humanity to extraterrestrial intelligence (ETI). Below, you will find a shared folder where we are consolidating these files. As part of the registry's development, these messages will be archived for extended preservation and made freely available for all individuals to download. (direct link to Drive folder)

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Sources (non exhaustive), to start from is: 

https://en.wikipedia.org/wiki/Active_SETI
https://en.wikipedia.org/wiki/List_of_interstellar_radio_messages