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

You have said that the main components of a Blockchain are blocks, hashes, transactions, validation, nodes, the block chain and the validation consensus. Yes this is true, Blockchain cover all these things.

You have beautifully explained the Transaction sequencing process of a blockchain network. The concept of HASH, NODES and BLOCKS are very well defined.

The consensus algorithms used in blockchains are very well defined. The PoW and PoS are beautifully explained along with other algorithm mechanism. All the nodes are very well explained and brief explained too.

I wish you very best of luck in this contest.