Correct option is A
Statement I: True. A blockchain is a list of records (blocks) linked using cryptographic methods, ensuring secure and tamper-proof data storage.
Statement II: True. Public blockchains (e.g., Bitcoin, Ethereum) are widely used in cryptocurrencies.
Information Booster:
1.
Features of Blockchain:
· Distributed ledger technology.
· Tamper-proof and transparent.
2.
Applications of Blockchain:
· Cryptocurrencies (e.g., Bitcoin).
· Supply chain management, healthcare, and e-governance.
Additional Knowledge:
·
Private vs. Public Blockchains:
· Public blockchains are accessible to anyone (e.g., Bitcoin).
· Private blockchains are restricted to authorized users.