I was always impressed by that project. I think wladimir looked into it for core but it didn’t gain traction. I have yet to deep dive.
Discussion
Would like to hear what stopped it from gaining traction if anyone recalls
It was full of shitcoins, they had an ICO and so on. Now (in the last two months) they have dropped all the shitcoin stuff.
Promising
i believe twitter solved alternative crypto backend verification issues with people posting ass pictures... then teams pirating sensitive "nfts" and selling them on the black market unbeknownst to the subjects. causing harassment and blackmail etc for real human identity by in-person validators. or something like that. ish. 
Could be simplified. Some good stuff in there though