Part 5/9:
The conclusion drawn is that hash power primarily aids in accomplishing proof-of-work, leaving other security functions, such as transaction signing and data integrity verification, fundamentally unaffected.
The Distribution of Nodes and Network Integrity
A significant point made was regarding the structure of nodes within the network. Contrary to popular belief, a broader distribution of nodes does not inherently equate to security. A more interconnected graph of nodes could withstand failures better than a spread-out network with the same number of nodes.