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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Can blockchain be scalable?

Possibilities for Blockchain Scalability Proof-of-Work-based permissionless blockchain networks are capable of offering a transaction throughput of almost 10 transactions every second . Furthermore, some technical modifications could help in improving the transaction throughput to almost 100 transactions every second.

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