block metadata sample values 111

block size 111

block timing 114

difficulty adj ustment for block creation 111

uncle block 113

Btcde-poll 88

Buttercoin Trade Engine 87

Byzantine Fault Tolerant (BFT) 66, 17 6

C

CalcDifficulty function 112

calcDifficultyHomestead function 112

Cardano 17 8

cash kiosks 9 0

C-DAC 19 9

Celo 17 8

centers of excellence

setting up 184

centralized ledger

versus distributed ledger 3 2

Central K now Your Customers (CK YC) 19 8

Centre of Excellence (CoE) 19 9

certificate authority (CA) 11

cipher 3 , 7

cipher modes

asymmetric ciphers 8

block ciphers 8

defining 7

stream ciphers 8, 9

symmetric ciphers 7 , 8

cold wallet 105

conflict 3 9

resolving 40

congestion 106

consensus 61

mechanism 7 1, 7 2

method 7 2, 7 3

terminologies 7 7 , 7 8

consensus algorithm 65 , 69

Byzantine fault tolerance (BFT) 66

Practical Byzantine Fault Tolerance (PBFT) 66, 67

Proof-of-Activity (PoA) 68

Proof of Burn (PoB) 67

Proof of Capacity (PoC) 68

Proof of Elapsed Time (PoET) 68

Proof of Stake (PoS) 67

Proof of Work (PoW) 65

consensus model 61-64

challenges 63 , 64