You have written a comprehensive and well structured post and I enjoyed reading it.

Blocks: Each block is a computerized record or record that contains a bunch of exchanges on a blockchain network. Blocks go about as secure holders for conditional data, each with a one of a kind cryptographic identifier called a hash, connecting it to the past block.

Oh, I got it. Blocks are like digital containers that hold a bunch of transactions. It's like a treasure chest where each piece of treasure represents a transaction, and the chest itself is securely locked with a unique key. My friend once explained it to me using a puzzle analogy, saying each piece fits perfectly with the one before it, forming a chain of clues.

Sequencing: A sequencer gets exchanges from the mempool, chooses their request, and bunches them together. This is essential for keeping the ordered control of exchanges.

It's fascinating how the sequencer organizes transactions, like a conductor orchestrating a symphony. They carefully arrange each transaction, ensuring they flow smoothly and logically. It's like arranging puzzle pieces to complete a picture; every piece has its place, and the sequencer ensures they fit together perfectly.

The Steem blockchain is intended to be quick and scalable, with free transactions and a block time of just 3 seconds, making it suitable for real-time online entertainment applications."

Wow, Steem sounds like the speedster of the blockchain world! With transactions processed in just 3 seconds, it's like the Flash zooming through the network. My experience with slow transactions on other platforms can be frustrating, so having fast and free transactions on Steem gives us a smooth and user-friendly experiance.

Different consensus algorithms used in blockchains include: Proof of Work (PoW), Proof of Stake (PoS), Delegated Proof of Stake (DPoS), Practical Byzantine Fault Tolerance (PBFT).

It's like there are different flavors of consensus algorithms to suit different tastes! Each algorithm has its unique recipe for maintaining the integrity of the blockchain. It's like choosing between different cooking methods to prepare a dish; you go with the one that fits the ingredients and cooking time best. Different blockchauns follow different mechanisms like steem follow DPoS and BTC goes with PoW.

Validator Nodes: In Proof of Stake (PoS) and Delegated Proof of Stake (DPoS) systems, validator nodes are responsible for creating new blocks and validating transactions.

Validator nodes are like the guardians of the blockchain, ensuring only valid transactions make it into the blocks. It's like having trustworthy sentinels guarding a fortress, allowing in only those who pass the security check. In my opinion, their role is crucial for maintaining the network's integrity and security.

I wish you all the best.