Page 211 - Big Data Analytics for Intelligent Healthcare Management

204 CHAPTER 8 BLOCKCHAIN IN HEALTHCARE: CHALLENGES AND SOLUTIONS

Root = Hash (H4, H5)

H4 = Hash (H0, H1) H5 = Hash (H2, H3)

H0 = Hash (TD0) H1 = Hash (TD1) H2 = Hash (TD2) H3 = Hash (TD3)

Transaction Transaction Transaction Transaction
data 0 data 1 data 2 data 3

FIG. 8.7
Merkle tree (hash).

New rule
Rule 0 Rule 0 Rule 1 Rule 1 Rule 1 Rule 1

Rule 0 Rule 0 Old rule

FIG. 8.8
Blockchain forking.

Blockchain

Public Private Consortium
• Public or private
• Public permission • Public or private
permission permission
• Higher cost • Medium cost • Low cost
• Medium security
• Highly secured • Medium security
• Partially
• Decentralized • Almost centralized
decentralized

FIG. 8.9
Different types of blockchain technology.