Final answer:
Blockchain technology is a decentralized ledger used for secure record-keeping and is the foundation for cryptocurrencies like Bitcoin. It is not related to hardware, data mining, or spyware.
Step-by-step explanation:
The blockchain technology described in the video is an example of a distributed ledger technology used for maintaining a secure and decentralized record of transactions. Blockchain is the underlying technology behind cryptocurrencies like Bitcoin and has applications across various industries for ensuring data integrity and security.
Blockchain is not an example of hardware as it is not a physical device. It is also not data mining, which is the process of analyzing large datasets to find patterns and correlations. Furthermore, it is not spyware, which is malicious software designed to gather data about a person or organization without their consent.
Therefore, the correct answer to the question is 'b', which represents the concept that blockchain is a type of technology known for its attributes of being decentralized, immutable, and enabling peer-to-peer transactions.