It was made available to Russian state television in the late 1990s and authenticated in public by Yuri Y. Chaika, Russia’s prosecutor general, who at 66 has a long and storied background in kompromat. Mr. Chaika benefited from the video, as it destroyed a predecessor as prosecutor general, Yuri I. Skuratov, who had been looking into suspicions of corruption by President Boris N. Yeltsin and his associates.

Mr. Chaika (pronounced CHIKE-uh) is also the man who is widely considered to have been the source of the incriminating information on Hillary Clinton that Donald Trump Jr. was promised at a meeting last June in Trump Tower with a Russian lawyer and a Russian-American lobbyist. And yet, oddly, the accusations brought to New York fell flat, by the accounts of those present, despite their having originated from such a seasoned master of kompromat.