Multiple studies in quantum mechanics support the existence of true randomness in nature by leveraging quantum phenomena such as vacuum fluctuations and discrete charge fluctuations to generate certified random sequences.
The retrieved literature contains multiple experimental and applied physics papers (such as papers 0, 5, and 11) demonstrating quantum non-locality and utilizing quantum mechanical processes—like vacuum fluctuations—as entropy sources for true random number generators. There are no papers refuting the foundational premise of quantum indeterminism or true randomness in nature among the provided sources.