What you're describing is very similar to Ethereum, a platform for decentralized applications. Its blockchain is a public database for application data that all

What you're describing is very similar to Ethereum, a platform for decentralized applications. Its blockchain is a public database for application data that all participants in a system need to agree on. Other data is either messaging to discussing parties, static data on a decentralized store, or private data on your own machine. Users of software built with this architecture enjoy unlimited uptime: the software is run by the user and a decentralized computer that only stops running when no one wants to use it anymore.