Blockchain Course

Lesson 1 • Consensus Mechanisms Overview

Surveys proof-of-work, proof-of-stake, and delegated variants as agreement protocols. Understanding trade-offs here prepares learners for platform selection in later chapters.

Lesson 2 • The Problem Blockchain Solves

Examines trust failures in centralised systems and the double-spend problem. Establishes the motivation for decentralised record-keeping that underpins every subsequent topic.

Lesson 3 • Cryptographic Primitives for Blockchain

Covers hash functions, digital signatures, and public-key cryptography as used in blockchain. These tools are the security backbone referenced throughout the course.

Lesson 4 • Network Architecture and Node Types

Explains peer-to-peer propagation, full nodes, light clients, and miner or validator roles. This section grounds learners in how blockchains operate as live networks.

Lesson 1 • Wallet Types and Use Cases

Compares custodial, non-custodial, hot, and cold wallets by security and usability trade-offs. Choosing the right wallet type is essential for both personal and enterprise deployments.

Lesson 2 • Transaction Lifecycle and Mempool

Traces a transaction from broadcast through mempool queuing to block confirmation. Understanding this lifecycle is critical for diagnosing delays and setting fees correctly.

Lesson 3 • Transaction Construction and Signing

Walks through input/output selection, fee calculation, and cryptographic signing. Learners build and sign raw transactions, reinforcing cryptographic concepts from Chapter 1.

Lesson 4 • Security Threats and Best Practices

Identifies phishing, clipboard hijacking, and key-exposure attacks targeting wallet users. Applying mitigations here protects assets in all practical exercises that follow.

Lesson 1 • Writing Contracts in a High-Level Language

Introduces syntax, data types, functions, and modifiers in a smart contract language. Learners write their first contracts, applying the structural knowledge from the previous section.

Lesson 2 • Gas Optimization Techniques

Analyses opcode costs, loop patterns, and storage access to minimise execution fees. Optimisation skills are applied in every subsequent contract development exercise.

Lesson 3 • State Management and Storage Patterns

Covers storage vs. memory vs. calldata, mappings, and structs for efficient state design. Efficient storage directly reduces gas costs explored in the next section.

Lesson 4 • Deployment and Interaction Workflows

Guides learners through compiling, deploying to testnets, and calling contract functions via scripts. This end-to-end workflow is the foundation for all applied labs ahead.

Lesson 1 • Audit Report Writing and Remediation

Teaches severity classification, remediation recommendations, and professional report formatting. Learners deliver a complete audit report, a key deliverable in blockchain security roles.

Lesson 2 • Secure Coding Patterns

Applies checks-effects-interactions, pull-payment, and role-based access patterns to eliminate vulnerabilities. These patterns are enforced in all contracts written from this point forward.

Lesson 3 • Common Vulnerability Classes

Catalogues reentrancy, integer overflow, access control flaws, and front-running as primary attack vectors. Knowing the threat landscape is the prerequisite for all defensive techniques.

Lesson 4 • Static and Dynamic Analysis Tools

Uses automated scanners and fuzz testers to surface vulnerabilities before deployment. Tool proficiency accelerates audits and complements manual review covered next.

Lesson 1 • DeFi Risk Assessment and Monitoring

Applies on-chain analytics, health factor monitoring, and protocol risk scoring to active positions. Learners build a risk dashboard integrating data from multiple protocol sources.

Lesson 2 • Stablecoins and Peg Mechanisms

Compares fiat-backed, crypto-collateralised, and algorithmic stablecoin designs and their failure modes. Peg stability analysis informs risk assessment for any DeFi strategy.

Lesson 3 • Automated Market Makers and Liquidity

Explains constant-product and concentrated liquidity formulas, impermanent loss, and fee mechanics. Learners calculate returns and risks for liquidity providers using real data.

Lesson 4 • Lending and Borrowing Protocols

Covers collateralisation ratios, interest rate models, and liquidation triggers in on-chain lending. Understanding liquidation mechanics is critical for risk management in DeFi.

Lesson 1 • Provenance, Authenticity, and Use Cases

Applies NFTs to ticketing, credentials, gaming assets, and real-world asset tokenisation. Provenance verification techniques ensure authenticity across all these domains.

Lesson 2 • Royalties and Secondary Market Mechanics

Implements on-chain royalty standards and analyses marketplace enforcement trade-offs. Royalty design is a key revenue consideration for creators and platform builders.

Lesson 3 • Minting Mechanisms and Launch Strategies

Implements allowlist, Dutch auction, and open edition minting patterns with gas-efficient batch minting. Launch strategy selection directly affects collection revenue and community fairness.

Lesson 4 • Metadata Design and Storage

Covers on-chain vs. off-chain metadata, decentralised storage options, and URI schemes. Robust metadata design prevents asset loss and supports long-term collection value.

Lesson 1 • Public vs. Permissioned Blockchain Trade-offs

Contrasts throughput, privacy, identity, and governance differences between public and permissioned chains. This analysis guides platform selection decisions made throughout the chapter.

Lesson 2 • Enterprise Integration and Legacy Systems

Connects permissioned networks to existing databases, APIs, and ERP systems via middleware. Integration patterns enable blockchain adoption without replacing legacy infrastructure.

Lesson 3 • Chaincode and Business Logic Development

Writes and deploys chaincode implementing endorsement policies and private data collections. Chaincode development on permissioned platforms parallels smart contracts from Chapter 3.

Lesson 4 • Permissioned Network Architecture

Designs ordering services, peer organisations, channels, and certificate authorities for a consortium network. Each component maps directly to enterprise requirements for data isolation.

Lesson 1 • Layer-2 Scaling Solutions

Compares rollups, state channels, and sidechains by security model, latency, and cost. Learners select and justify a Layer-2 solution for a given application requirement.

Lesson 2 • Building a Blockchain Adoption Strategy

Applies use-case evaluation, build-vs.-buy analysis, and stakeholder mapping to create an adoption roadmap. Learners synthesise all course knowledge into a structured strategic proposal.

Lesson 3 • Scalability Challenges and the Trilemma

Analyses the decentralisation-security-scalability trilemma and its practical implications for protocol design. This framework structures all scalability solution evaluations in the chapter.

Lesson 4 • Regulatory and Compliance Considerations

Maps blockchain activities to compliance obligations including data privacy, asset classification, and reporting. Compliance awareness is essential for any production blockchain deployment.