Dave found that Feedbin can even produce an RSS feed for all of your likes. Likes is a characteristic of Feedbin, and thankfully additionally NetNewsWire, which syncs the likes again to Feedbin. It’s important to flip a settings swap in Feedbin, however you then get a URL to your likes. This is mine.
Sadly, the feed is not CORS prepared, so you may should run it via a proxy — however it’s doable.
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I have not determined if I’ll toss one up someplace. If I do I am going to in all probability do it with WordPress Transients as I’ve had some expertise with that (that is how the roles web page works, for instance).
Additionally, do you know you may fashion an RSS feed?