Which of the following is NOT a feature of Blockchain technology?

The correct answer is centralized control because one of the fundamental characteristics of blockchain technology is its decentralized nature. In a blockchain system, control is distributed among all participants in the network rather than being concentrated in a single authority. This decentralization enhances security and trust, as no single entity can manipulate the data without the consensus of the network.

Timestamped transaction logs, decentralized data storage, and transparent transaction history are all essential features of blockchain technology. Timestamping ensures that each transaction is recorded with a precise date and time, contributing to the immutability and traceability of the data. Decentralized data storage means that copies of the data are distributed across multiple nodes, reducing the risk of data loss and improving resilience against attacks. Finally, transparent transaction history allows all participants to view and verify transactions, fostering trust within the network.