That's them. Although they do look a little different to the POR I have, mine a more like a spikey ball when first emerging (not dissimilar to you ones shown here, the photo is a liitle hard to really make out the detail), so maybe yours are a little more well developed and the spikes are actually starting to flatten.
Nice work anyway.
And just to back up the others here, yep sos those are flowers (actually just saw your sight and you can already tell that

), and hop vines are single sex (if my memory serves me correct they are called monoecious, diecious being if both sexes are on the same plant).
Hope your cuttings are going well. They look fine. I've had cuttings survive up to 2 weeks in a glass of water (that's how I propagate them, then plant them in pots when they shoot roots) before they actually start shooting roots of their own. Keep your cuttings well watered and they will come through fine.
Cheerio.