Your reasoning is interesting, but you can hardly agree with them. So, you are arguing that the most important basic characteristic of materials is "uniqueness" or "non-reproducibility." People and all living objects in general, in order to ensure their continued existence, must leave offspring, that is, constantly reproduce. Then, according to your theory, we have no signs of materiality. And bitcoin, which is just a mathematical algorithm, has become tangible.
To have materiality, any object must exist in time and space. If the object is not characterized by them, it cannot be recognized as material.