As far as I can tell the numbers are statistically computed estimates, based on real reported deaths, so it's not actual counted deaths, and there's still reporting lag skewing the last couple of weeks.
Thanks, yes it looks like recent weeks are weighted for under-reporting (how to figure out the weighting with so much chaos is another question), and they're estimating that a little over 60% of excess deaths in the past few weeks were caused by COVID-19.