A defendant was charged with robbery of a savings and loan branch after being arrested near the scene and found with marked bills. An hour after the robbery, the officer investigating the crime videotaped an interview with an eyewitness, in which the eyewitness described the crime and the robber. The officer then arranged for a lineup, at which the teller who was robbed identified the defendant as the robber. The officer later obtained computerized records of that day's deposits and withdrawals at the savings and loan, which allowed the calculation of how much cash was taken in the robbery. A month later, the teller testified before a grand jury, which indicted the defendant. The teller and the eyewitness both died of unrelated causes shortly afterward.

Required:
At trial, what evidence, if properly authenticated, may properly be admitted against the defendant over his attorney's objection that its receipt would violate the confrontation clause?