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Q10. A blockchain is a method of storing an immutable history of transactions in a publicly verifiable ledger. Its immutability is one of the main reasons why it is such an attractive online ledger, able to store all past transactions. Answer the following questions regarding blockchain: | i) Briefly explain the concept of longitudinal integrity via chaining and how it is achieved in a blockchain. j) Considering a chain of hashes is aggregated into a Merkle-Tree, explain why it is enough to keep the root hash in a block, and the other hash tree nodes can be discarded? k) Briefly list the 4 main components of a mined bitcoin block, and note which one of the four is the result of the "mining" process?

Q10. A blockchain is a method of storing an immutable history of transactions in a publicly verifiable ledger. Its immutability is one of the main reasons why it is such an attractive online ledger, able to store all past transactions. Answer the following questions regarding blockchain: | i) Briefly explain the concept of longitudinal integrity via chaining and how it is achieved in a blockchain. j) Considering a chain of hashes is aggregated into a Merkle-Tree, explain why it is enough to keep the root hash in a block, and the other hash tree nodes can be discarded? k) Briefly list the 4 main components of a mined bitcoin block, and note which one of the four is the result of the "mining" process?

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Q10. A blockchain is a method of storing an immutable history of transactions in a publicly verifiable ledger. Its immutability is one of the main reasons why it is such an attractive online ledger, able to store all past transactions. Answer the following questions regarding blockchain: | i) Briefly explain the concept of longitudinal integrity via chaining and how it is achieved in a blockchain. j) Considering a chain of hashes is aggregated into a Merkle-Tree, explain why it is enough to keep the root hash in a block, and the other hash tree nodes can be discarded? k) Briefly list the 4 main components of a mined bitcoin block, and note which one of the four is the result of the "mining" process?
Transcribed Image Text:Q10. A blockchain is a method of storing an immutable history of transactions in a publicly verifiable ledger. Its immutability is one of the main reasons why it is such an attractive online ledger, able to store all past transactions. Answer the following questions regarding blockchain: | i) Briefly explain the concept of longitudinal integrity via chaining and how it is achieved in a blockchain. j) Considering a chain of hashes is aggregated into a Merkle-Tree, explain why it is enough to keep the root hash in a block, and the other hash tree nodes can be discarded? k) Briefly list the 4 main components of a mined bitcoin block, and note which one of the four is the result of the "mining" process?
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