Question content area

Part $1$

A blockchain is

A$.$

the practice of using a network of remote servers hosted on the Internet to$$ store, manage, and process data.

B$.$

a codified agreement that$$ self$-$executes when the conditions are met.

C$.$

a method for identifying items through the use of radio signals from a tag attached to an item.

D$.$

a digital record of transactions in which individual$$ records, called$$ blocks, are linked together in a single$$ list, called a chain.