Is there a free (as in freedom) alternative to Publons I have just reviewed for a journal that allows me to transfer my information to Publons. It seems Publons is a relatively new thing with limited uptake. It also seems like the type of thing that would be better suited to be managed by a non-profit in a free (at least as in freedom and possibly as in beer) sense.

Is there a free competitor to Publons? If not, what data should I be keeping regarding my reviews such that if at a later date I wish to upload them to Publons, or a competitor, I can?
It seems now there is a free (as in free speech) alternative, via ORCID. A few months ago they introduced a system to make verifiable peer reviews visible in your profile. You can read more about it here. I was thinking of making a Publons profile, but given that it is owned by a commercial entity, it ends up being just another data mining company, very much like academia.edu and researchgate are. Great that we have now an alternative!