Good question. Now that you asked, I'm wondering myself. Initially it sounds as if ChainBase is limited to the database portion, but the Blue paper makes no other mention of Graphene, so it leaves the door open for doubts. The Steemit FAQ still makes mention of Graphene . . . https://steemit.com/faq.html#How_is_Steem_different_from_Bitcoin

That's not the reason for this comment though. I wanted to alert you to the fact that Steemit Devs are asking for our opinions and ideas for the 2018 road map.

https://steemit.com/roadmap2018/@steemitblog/steemit-roadmap-2018-community-input-requested

I came across a suggestion for the ability to categorize posts within each of our blogs. While there are many who suggest that there be a tab for the likes of resteems and Zappl, this particular suggestion is the only one I have seen to date that talks about a more comprehensive organizational solution. If you’d like to see something like this, please upvote the suggestion and pass this informational note around.

https://steemit.com/roadmap2018/@steemitblog/steemit-roadmap-2018-community-input-requested#@wadepaterson/re-steemitblog-steemit-roadmap-2018-community-input-requested-20171116t201954672z

Just below that same comment I added a couple of ideas that I haven’t yet seen put forth by anyone else. If you like those two ideas, again, please upvote the comment and alert other users you know to do the same.

Thanks a bunch!