Here are the simplest bullet points that explain how blockchain works:

- Blockchain is like a digital ledger that records transactions.
- Each transaction is a block that is added to the chain of blocks, forming a chain of transactions.
- Once a transaction is added to the blockchain, it cannot be changed or deleted. This makes it a secure and reliable record.
- To add a block to the chain, it needs to be verified by a network of computers called nodes.
- Nodes use complex algorithms to ensure that the new block is valid and authentic.
- Once the block is verified, it is added to the blockchain, and a unique code is created to represent it.
- This unique code is called a hash, and it ensures that the block cannot be altered without detection.
- The blockchain is decentralized, meaning it is not stored in a single location, and all nodes have a copy of the chain.
- This decentralization makes it nearly impossible for hackers to compromise the blockchain.
- Blockchain can be used for many applications, including cryptocurrencies like Bitcoin and Ethereum, as well as supply chain management and voting systems.
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