As we are considering what exists materially and not just perception originating as data receipt (Observation ) Leading to formation of observation product.
A material object only exists Now. the object now has coordination of the object and the object to be is a building up or disintegration / degradation or changed arrangement of the object now. The restoration of the object allows it to persist through time. They only persist for some time, they are not everlasting.
If the history of matter is materially real after it has been -Now. The amount of matter is spread over at least two material versions of the universe. Now and at least one then.
Block time?
There is no evidence that the material universe is more than unitary. Different observers have individually made a likeness observation product using the potential sensory data received at their location. From this it seems as if the past continues to exist after it has already been seen to occur, as there is still potential sensory data in the environment from which an observation product can still be formed.
This gives a uni -temporal (one time only)material universe There is also, within the material universe, observers themselves material who experience sequences of observation products, Passage of time is experienced the by awareness of the sequence likenesses.
Advantages of such a model.
Allows relativity of observation
Doesn’t allow grandfather type paradox
Contains both existing material reality and generated images
Explains why the paradoxes of SR theory are not really
Explains the perceived arrow of time
Takes account of how sensory perception occurs.
Fits the laws of thermodynamics, particularly relevant to law 1
Allows the same model of reality irrespective of scale.
Is image reality, that is meaning our observed present (personal sequence of observation products) 4d block time. The observation products can relate to data released at the same time making a uni-temporal ensemble. A moment can therefore have some temporal thickness or spread, the data used to made it originating at different times. Human sight produces an amalgamation of two 2d images, with horizontal and vertical spatial dimensions, also with a virtual perspective spatial orthogonal to them and overlaid by virtual time dimension. Observation products like stars can appear very old because the data they emitted long ago has traveled through near empty space, but not a complete void and not been absorbed in collision with dust particles, rock or debris.
Problems of growing block time models
If each time there change there was addition of a new arrangement of matter to the universe as well as the already existing matter, then there is as doubling each time it happens , in contradiction to thew first lae of thermodynamic. Matter and its arrangement includes energy. Matter that didn’t exist is popping into existence, which has been shown to be problematic (In discussion of quantum physics models.) It should not be assumed.