Given below are two statements :

Statement I: A block-chain is a growing list of records, called blocks, which are linked using Cryptography.

Statement II: Block-chains which are readable by the public are widely used by crypto curriencies.

In the light of the above statements, choose the correct answer from the options given below :

The correct answer is Both Statement I and Statement II are true  
Key Points

Statement I: A blockchain is a growing list of records, called blocks, which are linked using Cryptography.

• It keeps a secure, decentralised log of cryptocurrency transactions. In order to eliminate the requirement for a third party, blockchain can ensure the accuracy and security of data records.
• In blocks that are connected in a chain, data is stored in a blockchain database.
• A blockchain is a decentralised, distributed, and public digital ledger that is used to log transactions across numerous computers in a way that prevents changes to the record from being made in the past without also changing all blocks that come after them and getting network consensus.

So, Statement I is correct. 

Statement II: Block-chains which are readable by the public are widely used by cryptocurrencies.

• Blockchain technology is a cutting-edge database system that permits open information exchange inside a business network.

• Immutability, a feature of the blockchain, makes it hard to alter or change data that has already been recorded.

So, Statement II is correct.