The day it was verified of course.
Problem is, it wasn't verified by anybody at TG, and God knows when Activision verified it.
Jace Hall claimed on the TG forum that some unknown TG referee "tacitly verified" it by finding it somewhere and making the decision to enter it in the TG scoreboard.
Jace calls that "the truth of the matter"; I call it horseshit. When I see "Referee" in the verification method column on the scoreboard, that means to me that a TG referee witnessed the performance. Is there somewhere in the scoreboard where it is made clear that "Referee" in the verification method column may simply mean that the score was found somewhere by a referee and entered? Perhaps an entry of "Referee (Tacit)" could be used to differentiate between that sort of referee "verification" and the cases where the score was really witnessed by a TG referee.
The year listed doesn't bother me nearly as much as the verification method being misleading.