We think that’s not a problem, for 2 reasons:
- The database is a flow, and is also bounded in size. We do not need to keep track of every block, we can build states that get regularly updated.
- Small and quick transactions can be operated offline, with Lightning Networks. Duniter is already compliant with them.
So we don’t worry about this subject. Maybe we will, later on, if we missed something, but that won’t be before 3 or 5 years. 