The Hearth
The NEAR that backs every GOOD. It grows only through fees of fires that catch, and its has never gone down.
Supply
Invariants
Evaluated by the contract on every read. They are also asserted after every state change.
Floor over time
Floor history requires the event indexer
The floor at each catch is in the
fire_caught event (floor_h, floor_b), which needs an event indexer that doesn't exist yet. Contract state only holds today's floor and its high-water mark, so no line is drawn rather than an invented one.