Hello friend greetings to you, hope you are doing well and good there.

You have beautifully explained the Blockchain technology. You have said that, blockchains are transparent, secure data storage systems similar to digital ledgers. Yes this is very much true. Blockchain keeps all our transaction Data.

You have beautifully explained different kind consensus algorithms.Proof of Work (PoW), Proof of Stake (PoS), Delegated Proof of Stake (DPoS) are these different types of algorithm.

All the types of nodes are very briefly explained too. You have presented a too much beautiful example of explaining the transaction process. Your post is amazing. It's really nice to read it out here.

I wish you very best of luck in this contest.