  Assuming the von Neumann algebra associated with a generic de Sitter observer
is properly infinite (type III) we use Connes cocycle to identify the unique (
up to unitary equivalence) background independent dominant weight on an
extended algebra formally including an external observer. The background
independent algebra defined as the centralizer of this dominant weight is
equipped with a semi finite trace. Quantum gravity effects, as well as an
algebraic version of the no boundary Hartle Hawking partition function, can be
defined by representing, classically different de Sitter closed Universes, as
equivalence classes of finite projections in the background independent
algebra. The associated generalized entropy is determined by the value of the
semi finite trace on each equivalence class of finite projections.
