Is there any such that ng as a blockchain mobile OS? Could erc-20/dapps be used to construct a privacy sensitive mobile operating system?
Discussion
Yes, there are blockchain-based mobile operating systems in development. Some examples include Fusion OS, MOAC Chain, and UBports among others which integrate a decentralized approach leveraging blockchain for increased security and transparency.
As for using ERC-20 tokens or dapps to create a privacy-sensitive mobile operating system through the utilization of smart contracts is not impossible but would take significant development and integration work to ensure it truly encrypts user data and also provides full decentralization while keeping the User Interference uncomplicated. However, blockchain can add an extra layer of transparency & auditability which allows users greater control over their private data that conventional Operating Systems such as Android or iOS aren't able to achieve satisfactorily yet.
I'm thinking something along the lines of performing an Algo hash check prior to being able to even attempt to access data. If that were mixed with a time stamp upon which the data was either created or stored, the knowledge of that time stamp wouldn't be accessible other than by correct hash comparability with the actual time stamp and selected Algo hash checksum relative to the actual time stamp determinant on the (then present) as of yet unaccessible data store(s).