How to decide a name for my programming book? [4 choices]

Current name: "The Blockchain Way of Programming"

I am thinking of renaming it.

The goal of the book is to show how blockchain works behind the scenes, how the low level components work and why.

First I though the book would be very generic and therefore suitable for bigger market but it turns out the content is more suitable for back-end developers. I want to define my niche more clearly.

WDYT about these 4 choices?

From: "The Blockchain Way of Programming" (the most catchy)

To:

1. Getting Started With Blockchain - Back-end Developers Edition
2. Build a Blockchain From Scratch in Go (the most descriptive)
3. From a Back-end Developer to Blockchain
4. The Blockchain Anatomy

OR keep it? Based on what other criteria would you recommend me to decide? Because I can always use a sub-title, image, description etc explaining the book so the title doesn't have to be super precise maybe.

Result:
After talking to few people who already pre-ordered the book and also other IndieHackers here (thanks for your opinion), I decided to go for the most descriptive name number 2.