I would have to dig up a decade old computer or scour the web for years. THis is nonsense. It's 100% true that Wikileaks has a cryptographic canary that expired sometime after Julian Assange was incarcerated.
Have you got a link for what it is?
My prior is that any evidence of substance that contributed to a belief in wikileaks being untrustworthy would be /very/ easy to find in many locations. Maybe it's not but I can't think why. Perhaps you know?
I'd assume that once the canary died whichever actors compromised them scrubbed it.
It's been over a decade now, but I do have a machine somewhere with evidence.
Some nerd bigger than me here certainly has evidence available in a dropbox or somewhere accessible. I don't.
Source?
I'm not sure what the cryptographic part has to do with anything. I'd guess it was signed in a way that you can verify the government itself didn't tamper with the notice.