Hii @artist1111

I appreciate your efforts in creating this article.You have explained well about the topic.Blockchain technology is progressing day by day and we are seeing its updation with new features.

You have discussed some problems in the implementation of the blockchain technology such as scaliibility, energy consumption etc.Blockchain comes up with the lot of key features such as the impressive feature of transparency, security low fee,Decentralization, and immutability that increases the trust of users on the blockchain.

We can make the transparent and efficient transactions that are also stored in the nodes.In the third question you clearly explain the Zero-knowledge proof that is quite good.

Zero Knowledge Proof (ZKP) protocol has emerged as a powerful tool for verifying a user's identity without any compromising their privacy

You have rightly said zero knowledge proof helps in users verification without knowing the personal information that makes it an impressive protocol of authentication.

There are allowed of advantages as well as some disadvantages of Blockchain technology. It's decentralization security low fees and many other features make it an impressive Technology. On the other hand lack of regulation and scaliibility are some of its major drawbacks. if some issues in its implementation can be solved it can be more worthy.

Thanks for sharing your valuable entry in the contest.Good luck.