Despite having been in the market since 2016, it is still relatively unknown, its current little recognition may be due to the protocol used to extract each block that loses followers every time.
If you want to give you an idea of what TAJ is, it is simply a chain of blocks that can be mined using graphics cards, also its protocol is highly decentralized and its code can be used by anyone.
In general you need more information, you can only know about this project what is on its main site. They do not have a Roadmap, without a clear idea of what they plan to develop in the coming months or years. It is considerable that they rethink their current use as it could end up totally discarded.