BlockDAG

BlockDAG x Zelf Integration Grant Proposal

Executive Summary

Zelf proposes to integrate our revolutionary biometric wallet recovery system and decentralized name service with the BlockDAG ecosystem. Our unique technology uses Zero-Knowledge face proofs (ZK Face Proof) to encrypt seed phrases without storing biometric data anywhere, enabling completely offline wallet recovery that works without internet connectivity.

This integration will provide BlockDAG users with:

Human-readable domain names (e.g., john.blockdag)
Biometric wallet recovery without traditional seed phrase storage
Offline-first architecture that works without internet
Enhanced security through zero-knowledge cryptography
Seamless user experience eliminating common Web3 barriers

Funding Request: $50,000 USD

Problem Statement

Current blockchain ecosystems face critical user adoption barriers:

Complex wallet management requiring users to safely store 12-24 word seed phrases
Poor user experience with long, unmemorable wallet addresses
Single points of failure when users lose seed phrases or hardware wallets
Dependency on internet connectivity for most recovery solutions
Privacy concerns with biometric data storage in centralized systems

These issues prevent mainstream adoption and create significant security risks for users.

Our Solution: Zelf's Biometric Recovery & Name Service

Core Technology: ZK Face Proof

Our proprietary Zero-Knowledge Face Proof technology:

Encrypts seed phrases using facial biometrics + optional password
Never stores biometric data - everything happens locally
Creates mathematical proofs that can verify identity without revealing it
Works completely offline - no internet required for recovery

Zelf Name Service (ZNS)

Our decentralized naming system provides:

Human-readable names linked to crypto addresses
Works Multi-blockchain (BlockDAG, ETH, BTC, SOL, SUI, etc.)
Distributed storage via IPFS, Arweave, Walrus
Can be stored also as an NFT since the ZK-Face Proof is stored as a QR Code that weights less than 100kb.
Comprehensive API for integration (if the integration is done for a Node instance > which is an online version where the algorithm computations happen there in case you want to use it in an wallet extension)

Three Integration Approaches

Approach 1: Biometric Wallet Recovery + BlockDAG Name Service

Technical Implementation

Core Features:

Implement john.blockdag naming convention
Generate BlockDAG-compatible wallet addresses
Integrate with BlockDAG's native token economics
Provide API endpoints for name resolution

API Integration Points:

// Search for available names
POST /blockdag-name-service/search
{
  "name": "john.blockdag",
  "duration": "1" // years
}

// Register name with biometric recovery
POST /blockdag-name-service/lease-offline
{
  "name": "john.blockdag",
  "zelfProof": "encrypted_biometric_proof",
  "blockdagAddress": "bdag1234...5678"
}

// Recover wallet using biometrics
POST /blockdag-name-service/decrypt
{
  "name": "john.blockdag", 
  "faceBase64": "user_face_image",
  "password": "optional_password"
}

Offline Workflow:

User takes selfie + chooses name
System generates BlockDAG wallet locally
Creates encrypted ZK Face Proof containing seed phrase
Stores encrypted proof on IPFS with name metadata
User can recover anytime using face scan (offline)

Value Proposition:

$12-240 per name registration revenue for BlockDAG ecosystem
Eliminate seed phrase storage - users only need their face
Works offline - perfect for areas with poor connectivity
Instant wallet recovery in under a minute > ZelfProof + (Biometrics + Optional password) = seed phrase.

Approach 2: Biometric 2FA Authentication

Technical Implementation

Enhanced Security Layer:

Add biometric authentication to BlockDAG transactions
Provide SDK for dApps to integrate biometric verification
Create seamless 2FA without hardware dependencies

Integration Features:

// Authenticate transaction with biometrics
POST /blockdag-auth/verify-transaction
{
  "transaction": "0x123...",
  "faceBase64": "user_face_image",
  "zelfProof": "stored_biometric_proof"
}

// Setup biometric 2FA for BlockDAG address
POST /blockdag-auth/setup-2fa
{
  "blockdagAddress": "bdag1234...5678",
  "faceBase64": "user_face_image",
  "authLevel": "REGULAR" // or HARDENED
}

Security Benefits:

Prevent unauthorized transactions even with compromised private keys
Phishing protection - attackers can't replicate user's face and we have a 2D liveness detection integrated that is extremely good.
Compliance ready for institutional adoption and users worrying about privacy.
No additional hardware required (uses phone camera) and it doesn't depend on iOS nor Android, it's OS agnostic and device agnostic.

Approach 3: Decentralized Identity (DID) System

Technical Implementation

Comprehensive Identity Solution:

Create verifiable digital identities on BlockDAG
Link biometric proofs to on-chain identity records
Enable reputation systems and cross-platform verification

DID Features:

// Create decentralized identity
POST /blockdag-did/create-identity
{
  "name": "john.blockdag",
  "faceBase64": "user_face_image",
  "attributes": {
    "email": "john@example.com",
    "verified": true
  }
}

// Verify identity claims
POST /blockdag-did/verify-claim
{
  "did": "did:blockdag:john",
  "claim": "identity_verification",
  "proof": "biometric_signature"
}

Use Cases:

KYC/AML compliance for DeFi protocols
Social verification for DAOs and communities
Cross-chain identity portability
Reputation systems for marketplaces

Technical Architecture

System Components

Biometric Encryption Engine
- Face detection and processing
- ZK proof generation using o1js
- Local encryption (never uploads biometric data)
BlockDAG Integration Layer
- Wallet generation for BlockDAG addresses
- Transaction signing and verification
- Native token support
Distributed Storage
- IPFS for encrypted proof storage
- Optional Arweave for permanent archival
- Metadata indexing for fast lookups
API Gateway (Online version > Node instance : Docker container)
- RESTful endpoints for all operations for the online version
- Rate limiting and security controls
- SDK packages for easy integration

Security Architecture

┌─────────────────┐    ┌──────────────────┐    ┌─────────────────┐
│   User Device   │    │   Zelf Backend   │    │   BlockDAG      │
│                 │    │                  │    │   Network       │
│ ┌─────────────┐ │    │ ┌──────────────┐ │    │ ┌─────────────┐ │
│ │ Face Scan   │ │───▶│ │ ZK Proof Gen │ │───▶│ │ Name Record │ │
│ │ (Local)     │ │    │ │ (No Bio Data)│ │    │ │ Storage     │ │
│ └─────────────┘ │    │ └──────────────┘ │    │ └─────────────┘ │
│                 │    │                  │    │                 │
│ ┌─────────────┐ │    │ ┌──────────────┐ │    │ ┌─────────────┐ │
│ │ Encrypted   │ │◄───│ │ IPFS Storage │ │◄───│ │ Verification│ │
│ │ Recovery    │ │    │ │ & Retrieval  │ │    │ │ System      │ │
│ └─────────────┘ │    │ └──────────────┘ │    │ └─────────────┘ │
└─────────────────┘    └──────────────────┘    └─────────────────┘

Zelf Technical Architecture: Online vs Offline Systems

Overview

Zelf's biometric recovery system operates in two distinct architectural modes, each optimized for different use cases and security requirements:

Online Architecture - Full backend integration with all operations processed through Zelf servers or in-house servers. The biometric data goes to the node instance encrypted with PGP.
Offline Architecture - Local biometric processing with minimal backend interaction for storage authorization. The biometric data never leaves the device.

Both architectures maintain the core principle: biometric data never gets stored.

Online Architecture

System Flow Diagram

┌─────────────────────────────────────────────────────────────────────────────────────┐
│                                ONLINE ARCHITECTURE                                  │
└─────────────────────────────────────────────────────────────────────────────────────┘

┌──────────────────┐     ┌──────────────────────────────────────────────────────────┐
│   User Device    │     │                 Zelf Backend (Docker)                   │
│                  │     │                                                          │
│ ┌──────────────┐ │     │ ┌─────────────┐  ┌─────────────┐  ┌─────────────────┐   │
│ │   Camera     │ │────▶│ │   API       │  │ Encryption  │  │   Storage       │   │
│ │   Capture    │ │     │ │  Gateway    │  │   Engine    │  │   Controller    │   │
│ └──────────────┘ │     │ └─────────────┘  └─────────────┘  └─────────────────┘   │
│                  │     │        │               │                    │           │
│ ┌──────────────┐ │     │        ▼               ▼                    ▼           │
│ │  Encrypted   │ │◄────│ ┌─────────────┐  ┌─────────────┐  ┌─────────────────┐   │
│ │  ZelfProof   │ │     │ │ Validation  │  │ ZK Proof    │  │ IPFS/Arweave   │   │
│ │  Response    │ │     │ │ Middleware  │  │ Generator   │  │ Integration     │   │
│ └──────────────┘ │     │ └─────────────┘  └─────────────┘  └─────────────────┘   │
└──────────────────┘     └──────────────────────────────────────────────────────────┘
                                            │
                                            ▼
                         ┌──────────────────────────────────────────────────────────┐
                         │               External Storage                           │
                         │                                                          │
                         │ ┌─────────────┐        ┌─────────────────────────────┐   │
                         │ │    IPFS     │        │         Arweave             │   │
                         │ │  Network    │◄──────▶│        Network              │   │
                         │ └─────────────┘        └─────────────────────────────┘   │
                         └──────────────────────────────────────────────────────────┘

Component Details

1. User Device Layer

Camera Capture: Face detection and image processing
Local Validation: Basic image quality checks
Response Handling: Receives ZelfProof from backend

2. Zelf Backend (Docker Container)

┌─────────────────────────────────────────────────────────────────────────────────────┐
│                            DOCKER CONTAINER                                         │
│                                                                                     │
│  ┌─────────────────┐    ┌─────────────────┐    ┌─────────────────────────────────┐  │
│  │   API Gateway   │    │  Core Services  │    │     Storage Layer               │  │
│  │                 │    │                 │    │                                 │  │
│  │ • Rate Limiting │    │ • Face Proc.    │    │ • IPFS Client                   │  │
│  │ • Auth Control  │    │ • ZK Proof Gen  │    │ • Arweave Client                │  │
│  │ • Input Valid.  │    │ • Encryption    │    │ • Metadata Index                │  │
│  │ • Response      │    │ • Name Service  │    │ • Backup Systems                │  │
│  │   Format        │    │ • Wallet Gen    │    │                                 │  │
│  └─────────────────┘    └─────────────────┘    └─────────────────────────────────┘  │
│           │                       │                          │                      │
│           └───────────────────────┼──────────────────────────┘                      │
│                                   │                                                 │
│  ┌─────────────────────────────────┼─────────────────────────────────────────────┐  │
│  │                     Message Queue / Event Bus                                 │  │
│  └─────────────────────────────────────────────────────────────────────────────--┘  │
└─────────────────────────────────────────────────────────────────────────────────────┘

3. External Storage

IPFS Network: Distributed storage for encrypted proofs
Arweave Network: Permanent archival storage
Redundancy: Cross-platform replication

API Endpoints (Online Mode)

// Complete name service workflow
POST /zelf-name-service/v2/lease
{
  "zelfName": "john.blockdag",
  "faceBase64": "encrypted_face_data",
  "type": "create",
  "duration": "1",
  "password": "optional_password"
}

// Full decryption service
POST /zelf-name-service/v2/decrypt
{
  "zelfName": "john.blockdag",
  "faceBase64": "encrypted_face_data",
  "password": "optional_password"
}

// Search with backend processing
POST /zelf-name-service/v2/search
{
  "zelfName": "john.blockdag",
  "environment": "both"
}

Risk Mitigation

Technical Risks

Biometric spoofing: Advanced liveness detection prevents photo attacks
ZK proof integrity: Audited cryptographic implementations
Storage availability: Multi-provider redundancy (IPFS + Arweave + Walrus + NFT)
Key management: Hardware security module integration

Business Risks

Regulatory compliance: Privacy-by-design architecture
Market adoption: Extensive user testing and feedback loops
Competition: First-mover advantage and patent protection
Technology obsolescence: Modular architecture enables upgrades

Operational Risks

Service availability: 99.9% uptime SLA with monitoring
Data integrity: Cryptographic checksums and verification
Disaster recovery: Geographic distribution and backups
Team scaling: Established hiring and onboarding processes

Offline Architecture

System Flow Diagram

┌─────────────────────────────────────────────────────────────────────────────────────┐
│                               OFFLINE ARCHITECTURE                                  │
└─────────────────────────────────────────────────────────────────────────────────────┘

┌────────────────────────────────────────────────────────────┐
│                    User Device (Offline)                   │
│                                                            │
│ ┌─────────────┐  ┌─────────────┐  ┌─────────────────────┐  │
│ │   Camera    │  │   Local     │  │    ZK Proof         │  │
│ │  Capture    │─▶│ Processing  │─▶│   Generation        │  │
│ └─────────────┘  └─────────────┘  └─────────────────────┘  │
│                         │                   │              │
│                         ▼                   ▼              │
│ ┌─────────────┐  ┌─────────────┐  ┌─────────────────────┐  │
│ │ Biometric   │  │  Wallet     │  │   Encrypted         │  │
│ │ Validation  │  │ Generation  │  │   ZelfProof         │  │
│ └─────────────┘  └─────────────┘  └─────────────────────┘  │
│                                             │              │
│                                             ▼              │
│                                  ┌─────────────────────┐   │
│                                  │     QR Code         │   │
│                                  │    Generation       │   │
│                                  └─────────────────────┘   │
└────────────────────────────────────────────────────────────┘
                                             │
                                             ▼
┌────────────────────────────────────────────────────────────┐
│              Limited Zelf Backend                          │
│                                                            │
│ ┌─────────────┐           ┌─────────────────────────────┐  │
│ │    Auth     │           │      Storage Auth           │  │
│ │  Service    │──────────▶│       Controller            │  │
│ └─────────────┘           └─────────────────────────────┘  │
│       │                              │                     │
│       ▼                              ▼                     │
│ ┌─────────────┐           ┌─────────────────────────────┐  │
│ │ Permission  │           │    IPFS/Arweave             │  │
│ │ Validation  │           │     Integration             │  │
│ └─────────────┘           └─────────────────────────────┘  │
└────────────────────────────────────────────────────────────┘
                                             │
                                             ▼
                         ┌──────────────────────────────────────────────────────────┐
                         │               External Storage                           │
                         │                                                          │
                         │ ┌─────────────┐        ┌─────────────────────────────┐   │
                         │ │    IPFS     │        │         Arweave             │   │
                         │ │  Network    │◄──────▶│        Network              │   │
                         │ └─────────────┘        └─────────────────────────────┘   │
                         └──────────────────────────────────────────────────────────┘

Local Processing Components

┌─────────────────────────────────────────────────────────────────────────────────────┐
│                        USER DEVICE - LOCAL PROCESSING                               │
│                                                                                     │
│ ┌─────────────────────────────────────────────────────────────────────────────────┐ │
│ │                            OFFLINE SDK                                          │ │
│ │                                                                                 │ │
│ │  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐  ┌─────────────────────┐   │ │
│ │  │   Face      │  │ Biometric   │  │   Crypto    │  │    Wallet           │   │ │
│ │  │ Detection   │  │ Processing  │  │  Library    │  │   Generator         │   │ │
│ │  │             │  │             │  │ (o1js)      │  │                     │   │ │
│ │  │ • Liveness  │  │ • Template  │  │ • Poseidon  │  │ • Mnemonic Gen      │   │ │
│ │  │ • Quality   │  │   Extract   │  │ • ZK Proofs │  │ • Multi-chain       │   │ │
│ │  │ • Alignment │  │ • No Storage│  │ • Encrypt   │  │ • Key Derivation    │   │ │
│ │  └─────────────┘  └─────────────┘  └─────────────┘  └─────────────────────┘   │ │
│ │                                                                                 │ │
│ └─────────────────────────────────────────────────────────────────────────────────┘ │
│                                          │                                          │
│                                          ▼                                          │
│ ┌─────────────────────────────────────────────────────────────────────────────────┐ │
│ │                      LOCAL STORAGE (TEMPORARY)                                  │ │
│ │                                                                                 │ │
│ │  • Encrypted ZelfProof (memory only)                                            │ │
│ │  • QR Code (temporary display)                                                  │ │
│ │  • No biometric data stored                                                     │ │
│ │  • Auto-cleanup after processing                                                │ │
│ └─────────────────────────────────────────────────────────────────────────────────┘ │
└─────────────────────────────────────────────────────────────────────────────────────┘

API Endpoints (Offline Mode)

// Offline registration (device generates ZelfProof locally)
POST /zelf-name-service/v2/lease-offline
{
  "zelfName": "john.blockdag",
  "zelfProof": "locally_generated_encrypted_proof",
  "zelfProofQRCode": "base64_qr_image",
  "duration": "1"
}

// Local decryption (no backend needed)
// This happens entirely on device using stored ZelfProof

// Preview stored name (minimal backend query)
POST /zelf-name-service/v2/preview
{
  "zelfName": "john.blockdag",
  "environment": "both"
}

Competitive Advantages

Technical Superiority

True offline capability - works without internet connectivity
No biometric storage - eliminates privacy concerns and attack vectors
Multi-chain compatibility - not limited to single blockchain
Instant recovery - sub-10 second wallet restoration

Business Model Innovation

Sustainable revenue from name registrations and renewals
Low operational costs - decentralized storage model and no server usage
Scalable architecture - handles hundred of millions of users
Compliance ready - meets regulatory requirements

User Experience

Familiar metaphors - domain names everyone understands
Mobile-first design - optimized for smartphone usage
Error resistant - biometrics more reliable than passwords
Universal access - works in any geographic location

Architecture Comparison

Feature	Online Architecture	Offline Architecture
Biometric Processing	Backend (Docker)	Local Device
ZK Proof Generation	Backend Server	Local SDK
Wallet Creation	Backend Service	Local Generation
Internet Dependency	Required for all ops	Only for storage auth
Privacy Level	High (encrypted transfer)	Maximum (local only)
Speed	Network dependent	Instant local
Scalability	Server resources	Device resources
Storage Authorization	Backend managed	Backend minimal
Recovery Process	Backend decrypt	Local decrypt

Detailed Technical Flows

Online Mode: Complete Workflow

┌─────────────────────────────────────────────────────────────────────────────────────┐
│                        ONLINE MODE - COMPLETE WORKFLOW                              │
└─────────────────────────────────────────────────────────────────────────────────────┘

1. USER REGISTRATION
   ┌──────────────┐    ┌──────────────────┐    ┌─────────────────-┐
   │ Face Capture │───▶│ Upload to Backend│───▶│ Server Processing│
   └──────────────┘    └──────────────────┘    └─────────────────-┘
                                                        │
   ┌──────────────┐    ┌──────────────────┐    ┌─────────────────--┐
   │ Return Proof │◄───│ Store in IPFS    │◄───│ Generate ZelfProof│
   └──────────────┘    └──────────────────┘    └─────────────────--┘

2. USER RECOVERY
   ┌──────────────┐    ┌──────────────────┐    ┌─────────────────-┐
   │ Face Capture │───▶│ Send to Backend  │───▶│ Decrypt ZelfProof│
   └──────────────┘    └──────────────────┘    └─────────────────-┘
                                                        │
   ┌──────────────┐    ┌──────────────────┐    ┌─────────────────-┐
   │ Wallet Access│◄───│ Return Metadata  │◄───│ Verify & Extract │
   └──────────────┘    └──────────────────┘    └─────────────────-┘

Offline Mode: Local Processing

┌─────────────────────────────────────────────────────────────────────────────────────┐
│                       OFFLINE MODE - LOCAL PROCESSING                               │
└─────────────────────────────────────────────────────────────────────────────────────┘

1. USER REGISTRATION (LOCAL)
   ┌──────────────┐    ┌──────────────────┐    ┌─────────────────--┐
   │ Face Capture │───▶│ Local Processing │───▶│ Generate ZelfProof│
   └──────────────┘    └──────────────────┘    └─────────────────--┘
                                                        │
   ┌──────────────┐    ┌──────────────────┐    ┌─────────────────-┐
   │ Show QR Code │◄───│ Create QR Image  │◄───│ Local Encryption │
   └──────────────┘    └──────────────────┘    └─────────────────-┘
                                                        │
   ┌──────────────┐    ┌──────────────────┐    ┌─────────────────┐
   │ Confirm Save │───▶│ Auth Request     │───▶│ Store in IPFS   │
   └──────────────┘    └──────────────────┘    └─────────────────┘

2. USER RECOVERY (LOCAL)
   ┌──────────────┐    ┌──────────────────┐    ┌─────────────────-┐
   │ Face Capture │───▶│ Load ZelfProof   │───▶│ Local Decryption │
   └──────────────┘    └──────────────────┘    └─────────────────-┘
                                                        │
   ┌──────────────┐    ┌──────────────────┐    ┌─────────────────┐
   │ Wallet Access│◄───│ Extract Metadata │◄───│ Verify Locally  │
   └──────────────┘    └──────────────────┘    └─────────────────┘

Security Considerations

Online Architecture Security

┌─────────────────────────────────────────────────────────────────────────────────────┐
│                          ONLINE SECURITY LAYERS                                     │
└─────────────────────────────────────────────────────────────────────────────────────┘

1. TRANSPORT SECURITY
   ┌──────────────────┐    ┌──────────────────┐    ┌─────────────────┐
   │ TLS 1.3 Encrypt  │───▶│ Certificate Pin  │───▶│ Request Signing │
   └──────────────────┘    └──────────────────┘    └─────────────────┘

2. BACKEND SECURITY
   ┌──────────────────┐    ┌──────────────────┐    ┌─────────────────-┐
   │ Rate Limiting    │───▶│ Input Validation │───▶│ Process Isolation│
   └──────────────────┘    └──────────────────┘    └─────────────────-┘

3. STORAGE SECURITY
   ┌──────────────────┐    ┌──────────────────┐    ┌─────────────────┐
   │ Encryption at    │───▶│ Access Control   │───▶│ Audit Logging   │
   │ Rest             │    │ Lists            │    │                 │
   └──────────────────┘    └──────────────────┘    └─────────────────┘

Offline Architecture Security

┌─────────────────────────────────────────────────────────────────────────────────────┐
│                         OFFLINE SECURITY LAYERS                                     │
└─────────────────────────────────────────────────────────────────────────────────────┘

1. LOCAL PROCESSING
   ┌──────────────────┐    ┌──────────────────┐    ┌─────────────────┐
   │ Memory Only      │───▶│ No Disk Storage  │───▶│ Auto Cleanup    │
   └──────────────────┘    └──────────────────┘    └─────────────────┘

2. BIOMETRIC PROTECTION
   ┌──────────────────┐    ┌──────────────────┐    ┌─────────────────┐
   │ Liveness         │───▶│ Template         │───▶│ Mathematical    │
   │ Detection        │    │ Extraction       │    │ Hash Only       │
   └──────────────────┘    └──────────────────┘    └─────────────────┘

3. CRYPTOGRAPHIC SECURITY
   ┌──────────────────┐    ┌──────────────────┐    ┌─────────────────┐
   │ ZK Proof         │───▶│ Local Key        │───▶│ No Key          │
   │ Generation       │    │ Derivation       │    │ Transmission    │
   └──────────────────┘    └──────────────────┘    └─────────────────┘

Implementation Guidelines

Choosing the Right Architecture

START: Analyze Requirements
    │
    ▼
┌─────────────────────┐     ┌─────────────────────┐
│ High Privacy Needs? │────▶│ Choose OFFLINE      │
│ Low Connectivity?   │     │ Architecture        │
└─────────────────────┘     └─────────────────────┘
    │
    ▼ No
┌─────────────────────┐     ┌─────────────────────┐
│ Need Analytics?     │────▶│ Choose ONLINE       │
│ Enterprise Features?│     │ Architecture        │
└─────────────────────┘     └─────────────────────┘
    │
    ▼ No
┌─────────────────────┐
│ Hybrid Approach     │
│ - Local processing  │
│ - Optional backend  │
└─────────────────────┘

Development Considerations

SDK Requirements

// Offline SDK must include:
- Face detection libraries
- Cryptographic functions
- Wallet generation tools
- QR code generation

Backend Services

// Minimal backend for offline mode:
- Authentication service
- Storage authorization
- IPFS/Arweave integration
- Metadata indexing

Security Auditing

// Both architectures require:
- Cryptographic review
- Penetration testing
- Code audit
- Privacy assessment

Why BlockDAG?

Technical Alignment

Performance focus - DAG architecture matches our speed requirements
Scalability - can handle millions of name registrations
Innovation culture - embraces cutting-edge cryptographic solutions

Strategic Benefits

First-mover advantage - be first major chain with biometric recovery
Differentiation - unique value proposition vs other chains
Network effects - attracts users and developers
Revenue sharing - sustainable economic model

Community Synergy

Shared values - user empowerment and decentralization
Technical expertise - strong cryptography and security focus
Growth mindset - ambitious goals for mainstream adoption
Global reach - international user base and perspective

Implementation Timeline

Phase 1: Foundation (Weeks 1-4)

BlockDAG wallet integration - Generate native addresses
Core API development - Search, lease, decrypt endpoints
ZK Face Proof adaptation - Optimize for BlockDAG ecosystem
IPFS storage setup - Configure metadata schemas

Phase 2: Name Service (Weeks 5-8)

Name resolution system - *.blockdag domain support
Registration workflows - Online and offline leasing
Payment integration - BDAG token and more detailed support of the chain.
UI displaying all the progress - Demo application

Phase 3: Advanced Features (Weeks 9-12)

2FA authentication - Transaction verification
DID framework - Identity management
SDK development - Integration libraries
Security audits - Smart contract and API testing

Phase 4: Production (Weeks 13-16)

Mainnet deployment - Full system launch
Documentation - Developer guides and tutorials
Community tools - Dashboards and analytics

Market Opportunity & Impact

Addressable Market

Domain name market: $7B annually (growing 15% YoY)
Digital identity market: $13B (projected $53B by 2030)
Crypto wallet users: 100M+ globally with high churn due to seed phrase loss

BlockDAG Ecosystem Benefits

User Acquisition:

Lower barrier to entry - no complex seed phrase management
Improved retention - users can't lose access to wallets
Viral growth - easy-to-remember names drive adoption
Cross-chain bridge - attract users from other ecosystems

Revenue Streams:

Name registration fees: $12-240 per domain per year based on specific names and length.
Premium name auctions: $100-10,000+ for short/valuable names
Transaction fees: Small percentage on authenticated transactions

Network Effects:

Increased transaction volume from easier wallet access
dApp development attracted by superior UX
Enterprise adoption enabled by compliance features
Developer ecosystem growth through APIs and SDKs

Budget Allocation ($80,000)

Development ($55,360)

Senior blockchain developers (2 for 3 months): $33,600
Frontend/mobile developers (1 for 3 months): $16,000
Senior Designer (1 for 3 months): $5,760

Integration & Testing ($16,800)

Integration testing: $4,800
Security audits and penetration testing: $6,400
User acceptance testing: $3,200
Performance optimization: $2,400

Infrastructure & Tools ($3,840)

Cloud hosting and CDN (For the online Version): Machine $500 a month > 4 months = $3,200
Development tools and licenses: $320
Third-party services (IPFS, monitoring, RPCs, Blockchain API integrators): $320

Documentation & Community ($4,000)

Technical documentation: $1,600
Developer tutorials and guides: $1,600
Community engagement and support: $800

Success Metrics & KPIs

Technical Metrics

Registration speed: <60 seconds for offline registration
Recovery time: <30 seconds for biometric unlock
System uptime: 99.9% availability
API response time: <200ms average

Adoption Metrics

Name registrations: 10,000+ in first 6 months with the help of BlockDAG
Active users: 5,000+ monthly active users
Developer adoption: 10+ dApps integrated
Transaction volume: $250k+ on Name registrations + $1M in processed through wallet/system

Business Metrics

Revenue generation: $250,000+ in first year
User retention: 70%+ yearly retention rate
Support satisfaction: 4.5+ star rating
Cost efficiency: <$10 customer acquisition cost (depending how effective the marketing strategy is)

Long-term Vision

Year 1: Foundation

50,000+ registered names on BlockDAG
Integration with major wallets (MetaMask, Trust Wallet, etc.)
Mobile app launch with 100K+ downloads
Partnership with 3+ major dApps

Year 2: Expansion

Enterprise solutions for institutions
Advanced features (smart contracts, automation)
International expansion to 10+ countries
More dApps integrations

Year 3: Ecosystem

1M+ registered users
Decentralized governance transition
Open-source community development
Industry standard for biometric crypto recovery

Conclusion

The integration of Zelf's biometric recovery technology with BlockDAG represents a transformative opportunity to solve crypto's biggest user experience challenges. By eliminating seed phrases, providing human-readable names, and enabling offline functionality, we can dramatically accelerate blockchain adoption.

Our proven technology, experienced team, and clear roadmap position this project for immediate impact and long-term success. The requested $80,000 investment will deliver a production-ready system that enhances BlockDAG's competitive position while generating sustainable revenue streams.

This is more than just an integration - it's the foundation for mainstream crypto adoption.

Contact Information

Zelf Team

Website: https://zelf.world
GitHub: https://github.com/zelf-wallet
Documentation: https://docs.zelf.world
Apps: https://zelf.world/download/

Project Lead: Miguel Treviño Email: [miguel@zelf.world] Telegram: [@jmigueltrevinom]

This proposal represents a significant step toward making blockchain technology accessible to mainstream users through innovative biometric security and intuitive naming systems. We look forward to partnering with BlockDAG to realize this vision.

BlockDAG x Zelf Integration Grant Proposal​

Executive Summary​

Problem Statement​

Our Solution: Zelf's Biometric Recovery & Name Service​

Core Technology: ZK Face Proof​

Zelf Name Service (ZNS)​

Three Integration Approaches​

Approach 1: Biometric Wallet Recovery + BlockDAG Name Service​

Technical Implementation​

Approach 2: Biometric 2FA Authentication​

Technical Implementation​

Approach 3: Decentralized Identity (DID) System​

Technical Implementation​

Technical Architecture​

System Components​

Security Architecture​

Zelf Technical Architecture: Online vs Offline Systems​

Overview​

Online Architecture​

System Flow Diagram​

Component Details​

API Endpoints (Online Mode)​

Risk Mitigation​

Technical Risks​

Business Risks​

Operational Risks​

Offline Architecture​

System Flow Diagram​

Local Processing Components​

API Endpoints (Offline Mode)​

Competitive Advantages​

Technical Superiority​

Business Model Innovation​

User Experience​

Architecture Comparison​

Detailed Technical Flows​

Online Mode: Complete Workflow​

Offline Mode: Local Processing​

Security Considerations​

Online Architecture Security​

Offline Architecture Security​

Implementation Guidelines​

Choosing the Right Architecture​

Development Considerations​

Why BlockDAG?​

Technical Alignment​

Strategic Benefits​

Community Synergy​

Implementation Timeline​

Phase 1: Foundation (Weeks 1-4)​

Phase 2: Name Service (Weeks 5-8)​

Phase 3: Advanced Features (Weeks 9-12)​

Phase 4: Production (Weeks 13-16)​

Market Opportunity & Impact​

Addressable Market​

BlockDAG Ecosystem Benefits​

Budget Allocation ($80,000)​

Development ($55,360)​

Integration & Testing ($16,800)​

Infrastructure & Tools ($3,840)​

Documentation & Community ($4,000)​

Success Metrics & KPIs​

Technical Metrics​

Adoption Metrics​

Business Metrics​

Long-term Vision​

Year 1: Foundation​

Year 2: Expansion​

Year 3: Ecosystem​

Conclusion​

Contact Information​

BlockDAG x Zelf Integration Grant Proposal

Executive Summary

Problem Statement

Our Solution: Zelf's Biometric Recovery & Name Service

Core Technology: ZK Face Proof

Zelf Name Service (ZNS)

Three Integration Approaches

Approach 1: Biometric Wallet Recovery + BlockDAG Name Service

Technical Implementation

Approach 2: Biometric 2FA Authentication

Technical Implementation

Approach 3: Decentralized Identity (DID) System

Technical Implementation

Technical Architecture

System Components

Security Architecture

Zelf Technical Architecture: Online vs Offline Systems

Overview

Online Architecture

System Flow Diagram

Component Details

API Endpoints (Online Mode)

Risk Mitigation

Technical Risks

Business Risks

Operational Risks

Offline Architecture

System Flow Diagram

Local Processing Components

API Endpoints (Offline Mode)

Competitive Advantages

Technical Superiority

Business Model Innovation

User Experience

Architecture Comparison

Detailed Technical Flows

Online Mode: Complete Workflow

Offline Mode: Local Processing

Security Considerations

Online Architecture Security

Offline Architecture Security

Implementation Guidelines

Choosing the Right Architecture

Development Considerations

Why BlockDAG?

Technical Alignment

Strategic Benefits

Community Synergy

Implementation Timeline

Phase 1: Foundation (Weeks 1-4)

Phase 2: Name Service (Weeks 5-8)

Phase 3: Advanced Features (Weeks 9-12)

Phase 4: Production (Weeks 13-16)

Market Opportunity & Impact

Addressable Market

BlockDAG Ecosystem Benefits

Budget Allocation ($80,000)

Development ($55,360)

Integration & Testing ($16,800)

Infrastructure & Tools ($3,840)

Documentation & Community ($4,000)

Success Metrics & KPIs

Technical Metrics

Adoption Metrics

Business Metrics

Long-term Vision

Year 1: Foundation

Year 2: Expansion

Year 3: Ecosystem

Conclusion

Contact Information