Is blockchain hard to code?

anyone having a foundation of computer architecture, computer networks, operating systems, network security, distributed computing, proficiency in one programming language will find blockchain extremely easy to understand and later will be able to build a blockchain for any specific use case.

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How data is written to a blockchain?

Blockchains are write-only data structures with no adminis- trative permissions for editing or deleting of the data . The data structures are known as blocks and are distributed in a P2P network. Each block contains the cryptographic hash function of the previous block and is used to develop a link between them.

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