Digital Identity in the Blockchain Age: Ownership of Personal Information
Every day, dozens of times, we share our personal information in the digital space. From signing up for a simple website to opening a bank account, everywhere we are asked to provide information about ourselves. But who does this information really belong to? Who has access to it? And do we really have control over it?
The answers to these questions are concerning. In the current system, our digital identity is held by various companies and institutions, each of which may use it in different ways.
But blockchain offers an innovative solution: Self-Sovereign Identity (SSI). In this article, we explore how this technology can return control of digital identity to the users themselves.
What Is Digital Identity?
Simple Definition
Digital identity is a set of information that identifies a person in the online space. This information can include:
-
Full name
-
Date of birth
-
National ID number
-
Address
-
Phone number
-
Email
-
Profile photo
-
And any other identifying information
Types of Digital Identity
| Identity Type | Description | Example |
|---|---|---|
| Centralized Identity | Managed by a central authority | Facebook account, Google account |
| Federated Identity | Shared between multiple entities | Login with Google to other sites |
| Self-Sovereign Identity (SSI) | Fully controlled by the user | Blockchain-based identity |
The Problem with Digital Identity in Current Systems
1. Loss of Control
In the current system, you give your information to various companies and institutions, and afterward, you have no control over it.
Problems:
-
Companies can sell your data
-
Companies can close your account without reason
-
You cannot decide who has access to your data
2. High Security Risk
Your personal data is stored on various servers, each of which can be a target for hacking.
Concerning Statistics:
-
Millions of personal records are stolen annually
-
The cost of data breaches is increasing every year
-
Identity fraud is one of the fastest-growing crimes
3. Lack of Transparency
You don’t know:
-
Who has access to your data
-
How your data is being used
-
Where your data is stored
4. Repetition and Waste of Resources
Every time you join a new service, you have to provide your information again. This means:
-
Wasting users’ time
-
Duplicate data storage
-
Increased security risk
What Is Self-Sovereign Identity (SSI)?
Definition
Self-Sovereign Identity (SSI) is a model of digital identity management in which:
-
Users have full ownership of their data
-
Users have full control over data sharing
-
No central authority can manipulate the data
-
Data is stored in a decentralized manner
Principles of Self-Sovereign Identity
| Principle | Description |
|---|---|
| Existence | Users exist independently |
| Control | Users have full control over their data |
| Access | Users always have access to their data |
| Transparency | Systems and algorithms are transparent |
| Persistence | User identities are permanent |
| Privacy | Users can selectively share information |
| Portability | Users can move data between systems |
| Security | Data is stored securely |
Simple Analogy
-
Current system: It’s like giving the keys to your house to several people and hoping they don’t misuse them.
-
Self-Sovereign Identity: It’s like having a safe deposit box where, whenever someone needs a document, you only show them that specific document without giving them access to the entire box.
How Does Blockchain-Based Digital Identity Work?
1. Decentralized Identifiers (DIDs)
A DID is a unique identifier that:
-
Is created by the user
-
Is stored on the blockchain
-
Cannot be altered or deleted by others
2. Verifiable Credentials
Credentials are digital documents issued by a trusted authority that contain specific information about the user.
Features:
-
Signed by the issuer
-
Cannot be forged
-
The user can selectively share them
3. Identity Wallet
An identity wallet is an application that:
-
Stores the user’s keys
-
Manages credentials
-
Controls information sharing
Step-by-Step Process
Step 1: Identity Creation
-
The user creates an identity wallet
-
A Decentralized Identifier (DID) is generated
-
Public and private keys are created
Step 2: Receiving Credentials
-
The user requests a document from a trusted authority (government, bank, university)
-
The authority issues and signs the credential
-
The credential is stored in the user’s wallet
Step 3: Selective Sharing
-
The user needs to prove identity or a specific attribute
-
The user only selectively shares the required information
-
The verifier can check the credential’s authenticity on the blockchain
Step 4: Identity Verification
-
The verifier checks the credential
-
Verifies the issuer’s signature
-
Without needing access to additional data
Benefits of Blockchain-Based Identity
1. Greater Privacy
| Current System | Blockchain-Based Identity |
|---|---|
| You share all your information | You only share necessary information |
| Information is stored in multiple places | Information stays with you |
| You don’t know who has access | Full control over access |
2. High Security
-
Decentralized storage
-
Advanced encryption
-
No single point of failure
-
Immutability of data
3. Reduced Fraud
-
Forgery of documents is extremely difficult
-
All identity transactions are traceable
-
Stronger authentication
4. Efficiency and Savings
-
Elimination of duplicate processes
-
Reduced identity verification time
-
Reduced administrative costs
5. Global Access
-
No geographical restrictions
-
Usable by everyone
-
Suitable for those without traditional documents
Applications of Blockchain-Based Digital Identity
1. Financial Services
-
Opening bank accounts without physical presence
-
Receiving loans with digital identity verification
-
Identity verification on cryptocurrency exchanges
2. Government Services
-
Electronic voting
-
Registering for welfare services
-
Receiving identity documents
-
Paying taxes
3. Education
-
Digital academic credentials
-
Credential verification by employers
-
Enrolling in educational courses
4. Healthcare
-
Portable medical records
-
Secure sharing of records with doctors
-
Managing electronic prescriptions
5. Travel and Tourism
-
Digital visas
-
Identity verification at airports
-
Hotel and flight reservations
6. Business
-
Customer identity verification
-
Digital contract signing
-
Employee access management
Polygon and Digital Identity
Polygon, as one of the leading blockchain networks, provides a suitable platform for implementing digital identity systems.
Benefits of Polygon for Digital Identity
| Benefit | Description |
|---|---|
| Low cost | Deploying identity systems at very low cost |
| High speed | Fast verification of credentials and identity |
| Compatibility | Ability to use existing Ethereum standards |
| Ecosystem | Access to ready-to-use tools and libraries |
Omid Coin and Digital Identity
Omid Coin, as a project operating on the Polygon network, recognizes the importance of digital identity in the new era.
Omid Coin’s Approach to Digital Identity
Leveraging Polygon’s infrastructure, Omid Coin aims to:
-
Familiarize users with digital identity concepts
-
Prioritize user information security
-
Use international standards in identity management
-
Provide a secure and trustworthy experience for users
Omid Coin = Good Technology = Better Life
Challenges of Blockchain-Based Digital Identity
1. Public Adoption
| Challenge | Solution |
|---|---|
| Many people are not familiar with blockchain | Public education |
| Complex interfaces | Simple user interfaces |
| Resistance to change | Collaboration with traditional institutions |
2. Laws and Regulations
| Challenge | Solution |
|---|---|
| Regulatory uncertainty in many countries | Cooperation with lawmakers |
| Lack of global standards | Developing global standards |
| Unclear legal frameworks | Clarifying regulations |
3. Interoperability
| Challenge | Solution |
|---|---|
| Different identity systems must work together | Developing common standards |
| Incompatibility between platforms | Using open protocols |
| Siloed projects | Collaboration between projects |
4. Key Loss
| Challenge | Solution |
|---|---|
| If a user loses their keys, they lose access to their identity | Advanced recovery mechanisms |
| Single point of failure | Social wallets |
| No backup options | Multi-layer authentication |
5. Infrastructure Costs
| Challenge | Solution |
|---|---|
| Deployment and maintenance costs | Using low-cost networks like Polygon |
| High initial investment | Developing efficient solutions |
| Scaling costs | Economies of scale |
The Future of Digital Identity
Emerging Trends
| Trend | Description |
|---|---|
| Integration with daily life | Digital identity becomes a normal part of life |
| AI-based identity | Identity verification using AI and biometrics |
| Digital governments | Providing government services with digital identity |
| Identity economy | Users benefit from their own data |
| Advanced security | Quantum-resistant encryption |
Predictions
-
By 2026: Over 50% of countries will use blockchain-based digital identity
-
By 2028: Most identity documents will be issued digitally
-
Fraud reduction: Up to 80% reduction in identity fraud
-
Savings: Billions of dollars saved in administrative costs
Summary
Blockchain-based digital identity is one of the most important applications of this technology, capable of transforming the lives of billions of people.
Key Achievements:
-
Returning control to users: Users own and control their information
-
Increased privacy: Selective and targeted information sharing
-
Higher security: Decentralized storage and advanced encryption
-
Greater efficiency: Reduced redundant and administrative processes
-
Global access: Usable by everyone, without restrictions
The Polygon network, by providing suitable infrastructure, and projects like Omid Coin operating on Polygon, are building a future where users have full control over their digital identity.
FAQ
1. What is Self-Sovereign Identity (SSI)?
A model of identity management where users have full control over their personal information and no central authority can access it.
2. What is the difference between traditional digital identity and blockchain-based identity?
In the traditional system, data is held by companies, but in the blockchain-based system, the user owns and controls their own data.
3. Is blockchain-based identity secure?
Yes, due to advanced encryption and decentralized storage, it is much more secure than traditional systems.
4. Can I lose my digital identity?
If you lose your keys, you lose access to your identity. So you must protect your keys properly.
5. What role does Polygon play in digital identity?
Polygon provides the blockchain infrastructure on which digital identity systems are built.
6. Does Omid Coin use digital identity?
Omid Coin, as a project on Polygon, recognizes the importance of digital identity and follows security standards in this area.
7. Are governments embracing blockchain-based digital identity?
Many countries are exploring and implementing these systems, but adoption rates vary.
8. What is the cost of using blockchain-based digital identity?
For everyday users, there is no direct cost. However, for institutions and organizations, there are infrastructure deployment costs, which are reduced using networks like Polygon.
