  Out-of-time-order correlation (OTOC) functions provide a powerful theoretical
tool for diagnosing chaos and the scrambling of information in
strongly-interacting, quantum systems. However, their direct and unambiguous
experimental measurement remains an essential challenge. At its core, this
challenge arises from the fact that the effects of both decoherence and
experimental noise can mimic that of information scrambling, leading to decay
of OTOCs. Here, we analyze a quantum teleportation protocol that explicitly
enables one to differentiate between scrambling and decoherence. Moreover, we
demonstrate that within this protocol, one can extract a precise "noise"
parameter which quantitatively captures the non-scrambling induced decay of
OTOCs. Using this parameter, we prove explicit bounds on the true value of the
OTOC. Our results open the door to experimentally measuring quantum scrambling
with built-in verifiability.
