“oh by” is a simple primitive that you can use to condense information

We have an "HN FAQ" for things that (I think) would interest the HN Community, but there is, of course, a regular FAQ as well.[1]

There are also examples[2].

The most interesting emergent use-case we have seen is ad-hoc organizational details ... that is, I know that you're all going to meet somewhere at time X, and when you all get there you will need information Y, but that information doesn't exist yet ... so when you get there, look for the Oh By Code and that will give you the information you need.[3]

[1] https://0x.co/faq.html

[2] https://0x.co/examples.html

Oh wow, yeah, are we supposed to get "zero x" out of "oh by"? Even having that explained to me barely makes sense.

Something like "FYI" (for your information)would be more intuitive.

Even trying something like *.co (asterisk) would make more sense while still being weird because asterisks usually mark the fact that more information is available.

0x/"oh by" is an unfortunate name because "0" and "O" are difficult to distinguish in most fonts. It'll be even more confusing because the character is "0" and you're suggesting to pronounce it as "oh". Outside the programming/math worlds, most people will not know that "oh by" probably means "0x" or that "0x.co" is probably not "Ox.co".

Otherwise I generally like the concept, as long as it's not used as a URL shortener (per my previous comment).