[100% Off] Blockchain: Build, Secure And Deploy Real-World Applications

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

Added on September 26, 2025 Finance & Accounting 4 min read

What you’ll learn

Explain the fundamental concepts of blockchain including distributed ledgers
consensus mechanisms
and cryptographic principles.
Differentiate between types of blockchains (public
private
consortium
hybrid) and identify their use cases.
Describe the architecture of Bitcoin and understand how transactions
wallets
mining
and forks operate.
Compare Ethereum and Bitcoin
and explain the role of smart contracts
DApps
and gas fees in the Ethereum ecosystem.
Write
deploy
and test smart contracts in Solidity using Remix
Ganache
and the Ethereum Virtual Machine (EVM).
Evaluate security vulnerabilities in smart contracts (e.g.
reentrancy
integer overflow) and apply mitigation techniques.
Understand the design and architecture of Hyperledger Fabric and contrast permissioned vs. permissionless blockchains.
Explore interoperability solutions such as Polkadot and Cosmos
and explain how different blockchain networks communicate.
Analyze emerging trends such as Decentralized Finance (DeFi)
Layer-2 scaling
and AI-blockchain integration.
Assess blockchain security threats (51% attacks
Sybil attacks
eclipse attacks) and apply strategies for mitigation.
Implement cryptographic techniques such as RSA signing
hashing
and zero-knowledge proofs in blockchain contexts.
Build a simple blockchain prototype in Python
including block creation
proof-of-work
and transaction recording.
Develop blockchain-based applications in various domains such as voting
land registry
healthcare
supply chain
and identity management.
Apply decentralized identity and confidential transactions concepts to real-world scenarios.
Critically evaluate regulatory and legal challenges associated with cryptocurrencies and blockchain adoption in enterprises.

Requirements

Enthusiasm and determination to make your mark on the world!

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

Transaction Initiation
- A user requests a transaction (for example, sending cryptocurrency, recording a contract, or logging supply chain data).
Transaction Broadcast
- The transaction is broadcast to a network of computers (nodes).
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.
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)
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.
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