Hii @solexybaba

A well written post you have presented
.Your explanation is clear and easy to understand.I have learned a lot from your post.

Blockchain Technology has the great importance you have clearly explained the issues in the implementation of blockchain Technology. Scalability or energy issues.

There are many key features of the blockchain technology such as transparency,fast transactions, security etc.

These make the blockchain a worthy technology. You have also pointed out the important protocols in the working of blockchain technology.

Zero-knowledge proof is the cryptographic technique of verification that authenticate the users without knowing the personal information.

Thanks for sharing.Good luck for the contest.