news: Add entry about this authenticated channel

news.txt

@@ -1,2 +1,22 @@
 (channel-news
- (version 0))
+ (version 0)
+ (entry (commit "c0979ad86fdf0b403c60d5767328cb862ecc00ef")
+        (title (en "guix-north-america channel with authenticated updates"))
+        (body
+         (en "guix-north-america is now a channel (which primary is used as a means to distributes configuration).
+
+This channel takes advantage of support for authenticated updates in @command{guix pull},
+which protects you from attempts to tamper with this repository and ship malicious code
+instead. To ensure you only receive genuine updates from this channel, you should update your
+@file{~/.config/guix/channels.scm} to include the channel introduction:
+
+@lisp
+(channel
+ (name 'guix-north-america)
+ (url \"https://git.rekahsoft.ca/rekahsoft/guix-north-america\")
+ (INTRODUCTION
+  (make-channel-introduction
+   \"c0979ad86fdf0b403c60d5767328cb862ecc00ef\"
+   (openpgp-fingerprint
+    \"F8D5 46F3 AF37 EF53 D1B6  48BE 7B4D EB93 212B 3022\"))))
+@end lisp "))))