Not our sun, but other than the hydrogen (which is only a small portion by weight), they come from suns in general.

But it’s not secure. It’s the IN.

Simply containing each number sequence is a significantly weaker property than having them all occur at the right frequency. Still, while nobody has proven it, it’s generally expected to be true.

Figuring it out on your own is science, but I have a feeling OP didn’t actually personally search the world for one-horned horses or pointy eared-people with long lifespans. I bet they didn’t even work out how biology changes with scale and how evolution works to show that there can’t be tiny winged people.