Bessemer's last round was a series 'B', by then the bits and pieces would have all been in place, whether it was public or not isn't even all that important.

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.