>By Baker ID, what do you mean?
The "ID" that is shown for posts, see here.
Yours is 42a5a9.
I would get the ID of the first few posts of a thread, and that would be the ID that I expect the baker to be.
On 8kun the ID changes afaik when the IP changes, and sometimes when the cookies are deleted, but I tried just deleting the cookies and it still used the same ID for me. I even posted using Firefox after posting using a different browser and the ID was also the same.