Blockchain: Build, Secure and Deploy Real-World Applications

Learn blockchain from fundamentals to smart contracts, security, Hyperledger, real-world applications across industries.

Description

A warm welcome to the Blockchain Masterclass: Build, Secure, and Deploy Real-World Blockchain Applications course by Uplatz.

Blockchain is a distributed ledger technology (DLT) that records transactions across a network of computers in a secure, transparent, and tamper-resistant way.

Instead of storing data in a single central database, blockchain distributes identical copies of the ledger across all participants (called nodes). Every new transaction is validated by the network and grouped into blocks, which are then linked together in chronological order—forming a chain of blocks, hence the name blockchain.

How Blockchain Works

1. Transaction Initiation

   • A user requests a transaction (for example, sending cryptocurrency, recording a contract, or logging supply chain data).

2. Transaction Broadcast

   • The transaction is broadcast to a network of computers (nodes).

3. Validation

   • Nodes validate the transaction using a consensus mechanism such as Proof of Work (PoW) or Proof of Stake (PoS).

   • This ensures the transaction is legitimate and prevents fraud or double-spending.

4. Block Creation

   • Validated transactions are grouped together into a block.

   • Each block contains:

     • A list of transactions

     • A timestamp

     • A cryptographic hash of the previous block (linking it securely in the chain)

5. Adding to the Chain

   • Once verified, the new block is added to the existing chain of blocks.

   • Because every block links to the previous one, altering data in a block would break the chain, making it extremely tamper-resistant.

6. Distributed Ledger Update

   • The updated blockchain is replicated across all nodes in the network.

   • Every participant now has the same trusted copy of the ledger.

Key Features of Blockchain

• Decentralization – No single central authority; control is distributed.

• Transparency – All participants share the same ledger and can view transactions.

• Immutability – Once data is recorded, it cannot easily be altered.

• Security – Cryptography protects data integrity and user identities.

• Consensus Mechanisms – Ensure agreement on valid transactions.

Example in Practice

Imagine Alice sends 1 Bitcoin to Bob:

• The transaction request is broadcast to the network.

• Nodes validate Alice has enough balance.

• The transaction is grouped with others into a block.

• The block is validated and added to the blockchain.

• Bob receives 1 Bitcoin, and the ledger is updated across the network.

Blockchain Masterclass: Build, Secure, and Deploy Real-World Blockchain Applications – Course Curriculum

Topic 1: Blockchain Fundamentals

• Session 1 – Overview of Blockchain

• Session 2 – Types of Blockchain – Public, Private, Consortium, Hybrid

• Session 3 – Distributed Ledger Technology (DLT) and Hashing

• Session 4 – Consensus Mechanisms – POW, POS, Delegated POS, Byzantine Fault Tolerance

• Session 5 – Cryptographic Principles – Hash Functions, Digital Signatures, Encryption

Topic 2: Bitcoin and Early Blockchain Systems

• Session 6 – Bitcoin Architecture and Protocol

• Session 7 – Mining and the Role of Miners

• Session 8 – Bitcoin Transactions and Wallets

• Session 9 – Blockchain Forks – Hard Forks and Soft Forks

Topic 3: Ethereum and Smart Contracts

• Session 10 – Ethereum vs Bitcoin – Smart Contracts and DApps

• Session 11 – Other Cryptocurrencies (Litecoin, Ripple, Monero, etc.)

• Session 12 – Regulatory Challenges and Legal Aspects of Cryptocurrencies

• Session 13 – Introduction to Smart Contracts

• Session 14 – Ethereum Virtual Machine (EVM) and Solidity PART-1

• Session 15 – Ethereum Virtual Machine (EVM) and Solidity PART-2

• Session 16 – Writing a Simple Smart Contract in Solidity

• Session 17 – Deploying Smart Contracts Using Remix and Ganache

• Session 18 – Ethereum Gas and Transaction Fees

• Session 19 – Security Concerns in Smart Contracts (Reentrancy, Overflow, etc.)

Topic 4: Enterprise Blockchain (Hyperledger & Permissioned Chains)

• Session 20 – Hyperledger Fabric – Introduction and Architecture

• Session 21 – Consensus in Hyperledger and Practical Byzantine Fault Tolerance (PBFT)

• Session 22 – Permissioned vs. Permissionless Blockchains

• Session 23 – Interoperability of Blockchain Networks (Polkadot, Cosmos, etc.)

Topic 5: Emerging Trends in Blockchain

• Session 24 – Decentralized Finance (DeFi) & Yield Farming

• Session 25 – Layer-1 vs Layer-2 Scaling Solutions (Lightning Network, Rollups, Sidechains)

• Session 26 – Blockchain and Artificial Intelligence (AI) Integration

Topic 6: Blockchain Security & Privacy

• Session 27 – 51 Percent Attack, Sybil Attack, Eclipse Attack

• Session 28 – Security Mechanisms and Threat Mitigation in Blockchain

• Session 29 – Zero-Knowledge Proofs and zk-SNARKs

• Session 30 – Private Blockchains and Confidential Transactions

• Session 31 – Decentralized Identity and Self-Sovereign Identity

• Session 32 – Practical RSA Document Signing using Private Key

Topic 7: Blockchain Development with Python

• Session 33 – Block Creation and Hash Linking in Python to Create a Simple Blockchain Structure

• Session 34 – Block Creation with SHA-256 Hashing

• Session 35 – Prototype Implementation of a Linked Blockchain Ledger with SHA-256

• Session 36 – Blockchain with Proof-of-Work (PoW) in Python

• Session 37 – Recording a Transaction in a Block Using Python

• Session 38 – Blockchain with Transactions and Mining

Topic 8: Blockchain Applications – Prototypes

• Session 39 – Voting System Based on Blockchain

• Session 40 – Blockchain-Based Escrow Transaction System Using Python

• Session 41 – Blockchain-Based Land Registry System

• Session 42 – Blockchain-Based Certificate Verification System

• Session 43 – Blockchain-Based Medical Record System

• Session 44 – Blockchain-Based Simple Banking Ledger

• Session 45 – Blockchain-Based Supply Chain Tracker

• Session 46 – Blockchain-Based Digital Identity Management

• Session 47 – Blockchain-Based Academic Transcript Management

• Session 48 – Blockchain-Based Advanced Healthcare Record System

• Session 49 – Blockchain-Based Skill Certificate Authentication System

• Session 50 – Blockchain-Based Vehicle Ownership History System

• Session 51 – Blockchain-Based Public Grievance Redressal System

• Session 52 – Blockchain-Based NGO Donation Tracking System

• Session 53 – Blockchain-Based Product Warranty System

• Session 54 – Blockchain-Based Loyalty Points and Rewards System

• Session 55 – Blockchain-Based Book Ownership Registry

• Session 56 – Blockchain-Based Artwork Provenance Tracker

• Session 57 – Blockchain-Based Package Delivery Tracker

• Session 58 – Blockchain-Based Expense Recording and Verification System

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