It is a key part of the implementation of Holochain (https://holo.host).
It turns out that global consensus is not required to maintain accounting balance in a global-scale ledger. DHTs and their validation of the data they host is a big part of maintaining the invariant of the system.
I have been excited about this project for quite some time. They recently released their Rust client, although without networking. I cannot wait to play with it further as it holds the most promise amongst all "Web3" decentalized platforms.
It turns out that global consensus is not required to maintain accounting balance in a global-scale ledger. DHTs and their validation of the data they host is a big part of maintaining the invariant of the system.