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# Learning Objectives - Understand blockchain fundamentals - Apply blockchain to supply chain management - Evaluate smart contracts for industry - Basic understanding of distributed systems - Week 8: Supply chain concepts ## 1. Blockchain Fundamentals **Distributed Ledger:** Decentralized, shared database where all...
Learning Objectives
- Understand blockchain fundamentals
- Apply blockchain to supply chain management
- Evaluate smart contracts for industry
- Basic understanding of distributed systems
- Week 8: Supply chain concepts
1. Blockchain Fundamentals
Distributed Ledger: Decentralized, shared database where all participants have the same copy of data. No single point of failure.
Blocks: Groups of transactions linked cryptographically. Each block references the previous block's hash, creating an immutable chain.
Consensus Mechanisms:
- Proof of Work (PoW): Mining, energy-intensive (Bitcoin)
- Proof of Stake (PoS): Validators stake tokens, energy-efficient (Ethereum 2.0)
- Practical Byzantine Fault Tolerance (PBFT): Permissioned networks Smart Contracts: Self-executing contracts with terms written in code. Automatically execute when conditions are met.
2. Supply Chain Applications
Traceability: Track product from raw material source to consumer. Every transfer recorded immutably.
Provenance: Verify authenticity of products (counterfeit prevention). Luxury goods, pharmaceuticals, food safety.
Transparency: All participants see the same data. Reduces disputes, improves trust.
Smart Contracts: Automatic payment on delivery confirmation, automatic release of goods, automatic penalties for delays.
3. Benefits
- Immutable, tamper-proof record
- Trust without central authority
- Reduced paperwork and disputes
- Faster settlement (days to minutes)
- Enhanced transparency and accountability
Q1: How does blockchain improve supply chain traceability?Each transaction (transfer of goods, change of ownership) is recorded as an immutable block. From raw material to finished product, the entire history is transparent and verifiable by all participants. Q2: What is a smart contract in supply chain?Code that automatically executes when conditions are met. Example: payment is released to supplier when IoT sensor confirms goods arrived at warehouse with temperature within required range. Q3: How can blockchain prevent counterfeiting?Each product gets a unique digital identity (NFT) recorded on blockchain. Consumers scan QR code to verify authenticity against the immutable record. Q4: What are the challenges of blockchain in industry?Scalability (transactions per second), energy consumption (PoW), integration with legacy systems, regulatory uncertainty, data privacy, interoperability between different blockchains. Q5: What is a permissioned vs permissionless blockchain?Permissionless: anyone can join (public - Bitcoin, Ethereum). Permissioned: only authorized participants can join (private - Hyperledger, Corda). Industrial use typically permissioned. Join Discord PreviousAR/VR in IndustryNextSustainability & Green Manufacturing