It is true that he does not make that clear in THIS video but did so in the TED Talk presentation. The "zero" is the numerical value of the black hole at the centre of galaxies in relative terms.
Binary code "100101..." is, in my opinion, akin to the "existence" and "non-existance" of protons that "pop" in and out. depending on the pattern of "popping" you get different light information causing particles to form in specific ways.
Seems quite clear to me. But I'm no expert I'm just trying to connect the dots here.
"We are not human beings having a spiritual experience; we are spiritual beings having a human experience"—Pierre Teilhard de Chardin