Hi
This is my personal opinion
I think, you did the really good job and mentioned most interesting points about the Birdchain
But if you are looking for ideas for improvement here are few:
1) You express your verdict (positive) about the project very soon. So, a reader does not need to read your whole text as he already knows the outcome.
2) You did not mention any of the minuses. If the text is too positive, it can be considered as "bought" or bias. I would recommend mentioning 1-2 weaker points. Even if you don't see any or you know the company is already taking care of it. Mention 1-2 weeker points and explain that they are not such a big deal. In this case, your text would be considered more unbias and sincere.
Either way, I believe that this review is good. You express your opinion, you write in good language, pick-up good points. These are qualities of good review, in my opinion.