Yes, the cast vote record has been released, and Begich wins the head to head vs both Palin and Peltota. [1] is a nice writeup on the election (highly recommend the What's Interesting header if you don't have time for the whole thing) and [2] is a link to the released ballot data.

[1] https://electionscience.org/commentary-analysis/rcv-fools-pa...

[2] https://www.elections.alaska.gov/election-results/e/?id=22pr...