Which of the following statements regarding the features of blockchain technology are cor…

Approach: Analyze the core pillars of blockchain—decentralization, immutability, and transparency—to evaluate each statement.

- **Correct Answer:** (c) 1, 2 and 4
- **Statement 1 (Correct):** Blockchain provides a 'single source of truth' where authorized stakeholders can view data in real-time, while cryptographic hashing ensures that the records cannot be altered by any single party.
- **Statement 2 (Correct):** Blockchain is a Distributed Ledger Technology (DLT). Every node (computer) in the network maintains a copy of the ledger, and consensus mechanisms ensure these copies sync rapidly.
- **Statement 4 (Correct):** Once a block is validated and added to the chain, the mathematical hashing (linking blocks) makes it computationally infeasible to change or delete data without altering all subsequent blocks, which would be detected by the network.
- **Why Statement 3 is incorrect:**
- A **Consortium blockchain** is a semi-decentralized network where access is restricted to a pre-selected group of organizations (e.g., a group of banks).
- It is not a 'blend' of public and private blockchains; that definition describes a **Hybrid blockchain**. While consortiums have private elements, they are distinct from the hybrid model.