Illustrations
List of Figures
2.1 Different milestones during the evolution of blockchain
2.2 Blockchain – a continuous sequence of blocks
2.3 An illustration of a block
2.5 A cryptographic hash function
2.6 Asymmetric key encryption in blockchain
2.7 Decentralized identifier (DID)
3.2 Creating blockchain account
3.3 Adding peers on the blockchain
3.6 Transacting on the blockchain
3.7 Key characteristics of blockchain
3.8 Input and output UTXOs references
3.9 Proof-of-work – Fault tolerance mechanism
3.10 Limenberg’s representation of hashgraph
4.2 Different subdivisions of the raw data
4.3 Instance of a real coinbase transaction
4.4 Coinbase transaction: reward block
4.7 Top fiat currencies in the world
5.2 Working of Hyperledger Fabric
5.4 Comparison between centralized and distributed systems
6.1 Paper identities across the world
6.2 Digital identities across the world – North and South America
6.3 Digital identities across the world – Europe, Asia, and Africa
6.4 Aadhaar – An identity based on biometric and demographic data
6.5 Entities involved in UID project
6.7 Budget and expenditure of UIDAI (in 10,000,000 INR)
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