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Determine the dominant dissipation mechanism: Alfven-wave turbulence, resonant absorption and phase mixing of waves, or nanoflares (small reconnection events) in braided fields. Answer: mechanisms with energy fluxes matching these requirements, by region type.","problem_ref":"fb3295f7e5123579ad2a09ba5ff74518d3c4bd2f5b4197cb0f6231982bc8de9c","references":"","settled_by":"Observations resolving the energy flux in waves and in small reconnection events at the base of the corona, matched to the required heating by region type.","status_note":"","title":"What heats the solar corona above $10^{6}\\ 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