Adding "tube" to the name can remind peoples that a site is video sharing site. Although most "tube" sites targets mature audience which means that a brand/domain that has a "tube" on its name can leave an impression that it's a porn site, this can certainly help attract a lot of attention not only from mature audiences but also the general audiences because youtube, non porn site, is still the biggest "tube" site.

For my brand name proposal, i have 2 for now:

1. TubeBlock - video sharing site built with blockchain technology
2. Tubeq - to carry the "Q" branding