What is blockchain how does it work and is it secure

Blockchain: A digital record book where data is stored in linked blocks, secured with unique codes, and can't be altered without permission. Each block is secured with strong codes A network of computers (nodes) works together to add new blocks to the chain, ensuring its integrity and safety.


How does it work: Blockchain, a peer-to-peer network, uses consensus to execute transactions between nodes, like transferring funds in cryptocurrency or sharing process data in other applications.


Is blockchain secure: Blockchains combine math and cryptography to create a secure system. Each block's design enables consensus and protects the network.


The blocks that form the network consist of :


Data


The hash value of the current block


The hash value of the previous block


Timestamp


Additional information
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