[discodachshund]

Isn't that the trace ID? For metrics, it's in the form of exemplars, and for logs it is the log context

[candiddevmike]

That might be dependent on the library then, there isn't an official OTel Go logging library yet. Seems you have to add the trace ID exemplars manually too

[phillipcarter]

Go is behind several of the languages in OTel right now. Just a consequence of a very difficult implementation and its load-bearing nature as being the language (and library) of choice for CNCF infrastructure. If you use Java or .NET, for example, it's quite fleshed out.