In Twitter we can send messages to around 300k twitter crypto profiles(people that follow Crypto currency pages) out of which you will get a minimum of 5000 followers, upper limit can be higher according to the acceptance idea of Project.
In Facebook, we do similar, but we outreach around 200k people with message and description of Grow Advertising. you will get 3,000 followers and page likes in your Facebook profile.
In case of Reddit, We can bring your post in HOT SECTION of any subreddit like r/Ethtrader or you too can choose any specific subreddit. All 0.2M subscribers of Ethtrader will come across article about your project. You will get around 1.5k more subscribers on Reddit
For Instagram, this will include sending personal message and getting posts by famous cryptocurrency profiles with high number of followers
You will witness much increase in your project after all these are delivered.