You have an assert that would comprise of many claims that are all supported independently by sources, and so you would then have a hypothesis and present it as so (as opposed to a fact, which would be a claim and require evidence, but inherently your idea is jus that).
You present your idea on another forum that's eventually made into a fact by empirical evidence and then later link to that, citing your novel idea. This as you imagine is somewhat self-referential and probably wouldn't work at scale.
I'd say there are two main ways:
You have an assert that would comprise of many claims that are all supported independently by sources, and so you would then have a hypothesis and present it as so (as opposed to a fact, which would be a claim and require evidence, but inherently your idea is jus that).
You present your idea on another forum that's eventually made into a fact by empirical evidence and then later link to that, citing your novel idea. This as you imagine is somewhat self-referential and probably wouldn't work at scale.