Doug Colkitt, founder of the decentralized trading protocol ambient, posted on the on. This means validators and nodes can become stateless and all state can be stored off-chain (more efficiently)."
In response, Andre Cronje, director of the Fantom Foundation, responded: "Any chain using probabilistic finality or any variant of the longest chain law will not solve this problem. But I am confident in saying that we have solved the state of Fantom Expansion problem.
The first is aBFT consensus, which does not require the longest chain rule. After 2n+1/3 validators know the previous 2n+1/3 knowledge, we truncate all the data needed to reach this state. This means we can get rid of everything before the 2 epoch state.
Next up is our new DB Carmen, a flat store with no tree or tree structure while maintaining a cryptographic signature of the world state, which further greatly reduces current active state bloat (2 epochs).
Finally, Carmen supports real-time pruning natively, archive nodes still need to preserve everything, but most validators can run with pruning enabled.
Using the above method has reduced our state from about 2tb (archive) to 60gb (archive). State inflation has been one of our core milestones since our early days. "