Question

Which of the following statements about Blockchain is NOT true?

1.The first block created in the blockchain is called a genesis block.
2.When a new transaction occurs a new block that is identical to the previous ones is added to the blockchain.
3.The main advantages of blockchain include immutability, digital trust and possibility of Internet of Things integration.
4.Proof-of-work is used for validating transactions and mining new digital tokens.

Answer 1

The incorrect statement about Blockchain is that a new block added to the blockchain is identical to previous ones. Instead, each new block has a unique set of transactions and a cryptographic hash that links it to the previous block.

Step-by-step explanation:

The statement about Blockchain that is NOT true is: When a new transaction occurs a new block that is identical to the previous ones is added to the blockchain. Here are the correct statements:

1. The first block created in the blockchain is indeed called a genesis block.
2. The main advantages of blockchain include immutability, digital trust, and the possibility of Internet of Things integration.
3. Proof-of-work is a consensus mechanism used for validating transactions and mining new digital tokens.

Each block in the blockchain contains a unique set of transaction data and is connected to the preceding block by a cryptographic hash, making it distinct from the previous ones - not identical.