Are there hidden collectibles in gta v story mode?

The verified evidence describes Grand Theft Auto Online as the multiplayer component of Grand Theft Auto V, detailing its release history, open-world environment in San Andreas, and player customization features. However, the source does not discuss or reference collectibles, hidden or otherwise, within the single-player story mode of GTA V. Since the evidence is limited to GTA Online's content and structure, it cannot be used to confirm or deny the presence of hidden collectibles in the story mode. Users seeking information about GTA V's story mode collectibles would need to consult sources specific to the single-player campaign, as the provided material is exclusively about the online multiplayer experience.