After not finding a digital text of the Ben Hayyim Rabbinic line Hebrew Scriptures, here is a text I've been working on: going letter by letter through the Miqra according to the Masorah, a digital text based primarily on the Aleppo Codex, comparing with an image scan of the Second Rabbinic Bible; any difference in the text is checked with an image scan of the First Rabbinic Bible, and noted if confirmed.
The first Weekly Torah Portion is complete: please check the text for accuracy: below are links to view or download the portion with and without noted differences, to download the Miqra according to the Masorah text, and the Second and First Rabbinic Bible image scans.

General report: in this portion there are no differences that affect meaning between the two texts, only a few that affect how it is written.
At first I was trying to make the cantillation marks (not part of the text) correspond with the Ben Hayyim line, since Miqra according to the Masorah uses a different system for cantillation, but this has bogged down the process so much that I will seek or create a text with the most ancient cantillation system at a later time and as a separate project.
Miqra according to the Masorah is Creative Commons Attribution, the rest are of course Public Domain.

First Weekly Torah Portion - Ben Hayyim Rabbinic line text, without noted differences from Miqra according to the Masorah
https://docs.google.com/docume....nt/d/1RgXUhHZwFvJlQQ

First Weekly Torah Portion - Ben Hayyim Rabbinic line text, with noted textual differences from Miqra according to the Masorah
https://docs.google.com/docume....nt/d/1KAeLqP8kRtTFgx

Miqra according to the Masorah - (in the "Select Version" drop-down of download options on the right)
https://sefaria.org/Genesis?tab=contents

Second Rabbinic Bible - (the highest resolution is in the online viewer, which can be zoomed in - to download the highest resolution it has to be a zip file of the images, which you can put together into a pdf with a separate program. Keep in mind that Hebrew is read from right to left, and the pages are also read and turned in the reverse order of English.)
https://archive.org/details/se....cond-rabbinic-bible-

First Rabbinic Bible - (not as large text, or as high resolution, as the Second Rabbinic, unfortunately)
https://archive.org/details/fi....rst-rabbinic-bible-v

(With a difference that is a three way difference between the Miqra according to the Masorah, Second Rabbinic, and First Rabbinic, other texts are mentioned in the notes.)