How do we know that the investment predates the public api documentation?
It does raise an interesting question though: how will the OP prove that their work is the original, that might hinge on a lot of unknowns, more difficult still if the work was originally lifted by an employee of the company and then passed on to Otonomo with them being the unwitting recipients.
So it is definitely possible that the codebase got stolen and the perps missed changing a few hints, resulting in the Otonomo samples generating identical sample code, as shown.