Blockchain for Digital identity security

This presentation dives into how blockchain can reshape the way we manage digital identities. It starts with the basics—what blockchain is and how digital identity works—then explores how decentralization, encryption, and transparency make our data safer. You’ll see real-world examples like smart contracts, secure voting systems, and supply chain tracking, plus a breakdown of the key benefits and challenges. Whether you're a student, tech enthusiast, or just curious about cybersecurity, this is a fresh look at how blockchain is changing the digital world

1. Introduction to blockchain -> What is blockchain ? -> What is digital identity ? -> Why use blockchain for security ? -> How it is done ?

2. working Digital identity Why use blockchain Blockchain What is blockchain A blockchain is a shared digital record book* that is spread across many computers, meaning no one person or group controls it (decentralized).It records information in groups called *blocks, which are then permanently linked together using secure codes, forming a chain. Once a record is added, it cannot be changed or deleted, creating a secure and verifiable history of transactions . What is digital identity f afahfahfoahohaodafofjafohaofhaohoahfoahfoahfoahfoahfoahfoahfoahfoafhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhfo What is digital identity f afahfahfoahohaodafofjafohaofhaohoahfoahfoahfoahfoahfoahfoahfoahfoafhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhfo What is digital identity f afahfahfoahohaodafofjafohaofhaohoahfoahfoahfoahfoahfoahfoahfoahfoafhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhfo

3. working Digital identity Why use blockchain Blockchain What is blockchain A *blockchain* is a *shared digital record book* that is spread across many computers, meaning no one person or group controls it (decentralized).It records information in groups called *blocks, which are then permanently linked together using secure codes, forming a chain. Once a record is added, it cannot be changed or deleted*, creating a secure and verifiable history of transactions . What is digital identity A digital identity is the profile of information that represents you online. It includes everything from your login details and government ID numbers to your browsing history and social media posts. Its main purpose is to let online systems verify who you are so you can access services and complete transactions f afahfahfoahohaodafofjafohaofhaohoahfoahfoahfoahfoahfoahfoahfoahfoafhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhfo What is digital identity f afahfahfoahohaodafofjafohaofhaohoahfoahfoahfoahfoahfoahfoahfoahfoafhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhfo

4. working Digital identity Why use blockchain Blockchain What is blockchain A *blockchain* is a *shared digital record book* that is spread across many computers, meaning no one person or group controls it (decentralized).It records information in groups called *blocks, which are then permanently linked together using secure codes, forming a chain. Once a record is added, it cannot be changed or deleted*, creating a secure and verifiable history of transactions . What is digital identity Why use blockchain for security Blockchain offers several key benefits:- 🔒 Security: Data is encrypted and tamper-proof, reducing fraud and unauthorized access.- 🌐 Transparency: Everyone in the network can see and verify transactions, building trust.- ⚡ Efficiency: Removes intermediaries, speeding up processes like payments and contracts.- 📁 Data Integrity: Once recorded, information can't be changed, ensuring reliable records. What is digital identity f afahfahfoahohaodafofjafohaofhaohoahfoahfoahfoahfoahfoahfoahfoahfoafhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhfo

5. working Digital identity Why use blockchain Blockchain What is blockchain A *blockchain* is a *shared digital record book* that is spread across many computers, meaning no one person or group controls it (decentralized).It records information in groups called *blocks, which are then permanently linked together using secure codes, forming a chain. Once a record is added, it cannot be changed or deleted*, creating a secure and verifiable history of transactions . What is digital identity f afahfahfoahohaodafofjafohaofhaohoahfoahfoahfoahfoahfoahfoahfoahfoafhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhfo What is digital identity Working Blockchain is used to securely record and verify transactions without needing a central authority. It's widely applied in cryptocurrencies, supply chains, and digital contracts. By ensuring transparency and preventing tampering, it builds trust across industries. Its decentralized nature makes data sharing safer and more efficient.

6. Real-World Applications Blockchain technology is moving beyond finance to transform various industries. Cryptocurrencies Decentralized digital currencies (e.g., Bitcoin, Ethereum) enabling peer-to-peer transactions without intermediaries. Supply Chain Tracking Providing transparent and immutable records of a product's journey from origin to consumer, ensuring authenticity and reducing fraud. Smart Contracts Self-executing contracts with the terms of the agreement directly written into code, automating processes and reducing legal costs. Digital Identity and Voting Creating secure, verifiable digital identities and enabling transparent, auditable, and secure online voting systems.

7. Benefits & Challenges Current Challenges Scalability: Difficulty handling high volumes of transactions quickly. Energy Use: Proof-of-Work systems consume significant energy. Regulation: Lack of clear, consistent global regulatory frameworks. Adoption Hurdles: Complexity and resistance to change in established systems. Key Benefits Transparency: All transactions are visible to network participants. Security: Cryptography makes data nearly impossible to tamper with. Decentralization: Eliminates single points of failure and control. Efficiency: Faster settlement times and reduced operational costs.