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Roronoa Zorro
@roronoazorro
Today we started to get the intensity. Start trying to learn what a node is in a blockchain? 1. Start with the "traditional database": Imagine that you go to a bank to deposit money, and the bank's job is to manage the ledger (record your deposits and withdrawals). The bank's database holds all the customer's account information, and only the bank can modify it. This model is called centralization because all data is managed by a centralized bank, and only the bank has access to modify the data. 2. How blockchain can change this: In the world of blockchain, there are no banks and no centralized institutions. Data is stored and managed decentralized. That is, everyone can have a copy of the ledger on their own computer. These computers (devices) are called nodes. Each node keeps a record of all transactions on the blockchain and works together to ensure that each record is correct.
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Roronoa Zorro
@roronoazorro
How does a node work? Imagine that you and your friends manage a ledger together: Let's say you and your friends decide together to keep a record of everyone's debts and loans. Everyone is in a different place, but everyone has a copy of the ledger. When someone borrows money, everyone else has to record the transaction in their own ledger. If someone tries to make a false account on their own ledger (e.g. by modifying the amount borrowed), the other friends will check for inconsistencies and reject the wrong record. Key points: Blockchain nodes are like these friends who hold a copy of the ledger, they work together to maintain the authenticity of the ledger, and no single authority can control the data. When a new transaction occurs (e.g. someone transfers, borrows, etc.), all nodes check the authenticity of the transaction. If the transaction is validated, the node records the transaction in its own ledger.
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Armstrong
@armstyong
Please follow me.
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