Look at this one
Not sure what to make of that either. He makes it sound like he independently discovered proof that these episodes exist. How on earth would he be able to do that?
: "Right now I'm holding on to the proof + not leaking it publicly. But I assure you I have proof of 3 tons of film cans arriving"
He may have shipping manifests, inventory logs, that sort of thing, that shows that the BBC took possession of 3 tons of film cannisters in 2011. In short, documentation that the cannisters physically exist. No, that doesn't tell him what's in them, unless he's been given other details.