A video named ♐PORT was posted to the channel on December 31, 2017.
The channel was undiscovered until cryptic text posted in a tweet that same night was decoded on January 1, 2018 by discord user Peter, with the text "VUNzZ1JUUkpOeTA1TXVCN2cyWDV1ZXFn" decoding in Base64 to "UCsgRTRJNy05MuB7g2X5ueqg", the text at the end of this channel's URL.
Questions of Authenticity
As with the provenance of the reactivated Twitter account, there was no solid connection to the "original" author(s) of UFSC.
On March 27, 2019. the content on UFSC's G+ page was removed, several days before the service was due to shut down. After that deletion was noticed, a new G+ post claimed which accounts are "real". It claimed Twitter, but only UNTL91517 (i.e., until 9/15/17, the date of the Reset).
The list pointedly did not include the "3rd youtube channel", which has lead to a general agreement that it is "non-canonical".
Value/meaning of un-REAL content
Although apparently not the product of the original creator(s) of UFSC, these videos exhibited a high degree of craft. Whether there is something concealed within them, and how that might relate to canonical UFSC content, is currently unknown.