What does a BlockChain specialist need to know - technologies in Java?

Question

Java

I would like to delve into blockchain technology. Could you tell me what a Blockchain engineer / Blockchain developer Java should know?
Are there any articles on this?
I will be grateful for the answer.

Answer 1

Solidity
Ethereum - Cue ball
existence of private blockchain frameworks (Hyperledger / those in vacancies)
consensus principles, examples, and implementation
and varieties of Vaseline

Answer 2

Fundamentals of cryptography of course. it is unlikely that without a deep knowledge of mathematics it will be possible to create something new, but it is necessary to understand how this or that algorithm works, at least in order to implement it.