Question

Select the three items that will be included in every block in a blockchain.

a. the unique information identifying the block that precedes
b. it a timestamp the unique
c. information identifying the block that follows
d. it a hash

Answer 1

In a blockchain, every block includes the preceding block's information, a timestamp, and a hash.

Step-by-step explanation:

In a blockchain, every block contains three items:

1. The unique information identifying the block that precedes: Each block in a blockchain contains a reference to the block that came before it, creating a sequential chain of blocks.
2. A timestamp: This is a record of the exact time when the block was added to the blockchain, helping to maintain the chronological order of the blocks.
3. A hash: A hash is a unique digital fingerprint generated by a mathematical algorithm. It represents the content of the block and plays a crucial role in maintaining the integrity of the blockchain.