Live Demos - Technical Analysis

Deep dive into the technical architecture and implementation patterns used in BSV's live proof-of-concept applications, highlighting both atomic transactions and identity integration.

🏗️ Architecture Overview

These applications demonstrate the "new stack" - modern BSV development patterns that eliminate traditional blockchain complexity through atomic transactions, standardized interfaces, and built-in identity accountability.

Core Technologies

  • BRC-100 Wallet Interface - Standardized wallet-to-application communication

  • BEEF (Background Evaluation Extended Format) - Atomic transaction format with SPV proofs

  • BSV TypeScript SDK - Modern development toolkit with identity support

  • Embedded WalletClients - Application-integrated wallet functionality

  • BRC-103 Identity Certificates - Verifiable identity with selective disclosure

  • Type-42 Key Derivation - Shared key universes for private communication

  • BRC-31 Authrite - Mutual authentication protocol

🔧 Technical Deep Dives

1. P2P MNEE Token Transfer

Live Demo | Technical Focus: SPV Token Payments with Identity

// Conceptual implementation pattern with identity integration
// const tokenTransfer = await wallet.createAction({
//   description: 'MNEE token transfer to certified identity',
//   inputs: [senderTokenUTXO],
//   outputs: [recipientTokenUTXO],
//   identityVerification: {
//     recipient: recipientCertificate,
//     selectiveDisclosure: ['name', 'verification_status'],
//     mutualAuth: true
//   }
// });
// SPV verification + identity verification happen instantly

Key Technical Features:

  • SPV Token Verification - Instant validation without external services

  • Identity-Based Routing - Payments to BRC-103 certified identities, not addresses

  • Selective Disclosure - Recipients reveal only necessary identity fields

  • Mutual Authentication - Both parties verify each other's identity certificates

  • Real-Time Balance Updates - Atomic state changes reflected immediately

  • BRC-100 Integration - Standard wallet interface for seamless UX

Identity Implementation Patterns:

  • BRC-103 certificate validation for recipient verification

  • Type-42 key derivation for secure communication channels

  • Selective disclosure to protect privacy while enabling verification

  • Token UTXOs as spendable assets with identity accountability

  • Atomic transfer operations with built-in identity verification

  • Local SPV validation using BEEF format with identity proofs

2. Truth Machine - Data Integrity System

Live Demo | Technical Focus: Timestamping & Proof with Identity

// Conceptual timestamping pattern with identity attestation
// const timestamp = await wallet.createAction({
//   description: 'timestamp file hash with identity attestation',
//   outputs: [{
//     satoshis: 1,
//     data: {
//       fileHash: sha256(fileData),
//       timestamp: Date.now(),
//       proofType: 'existence',
//       attestor: attestorCertificate,
//       selectiveDisclosure: ['professional_credentials', 'organization']
//     }
//   }]
// });
// Creates immutable proof of existence with verifiable attestor identity

Key Technical Features:

  • Cryptographic Timestamping - File hashes recorded with block-level timestamps

  • Identity Attestation - Verifiable identity of who created the timestamp

  • Professional Credentials - Selective disclosure of attestor qualifications

  • Proof of Existence - Immutable evidence of data at specific time with accountability

  • Token-Funded Operations - Transaction fees paid from token balance

  • Data Integrity Verification - Cryptographic proof without storing actual data

Identity Implementation Patterns:

  • BRC-103 certificates for attestor identity verification

  • Selective disclosure of professional credentials and organizational affiliation

  • SHA-256 hashing for data fingerprinting with identity accountability

  • Blockchain anchoring for tamper-proof timestamps with verifiable attestors

  • Minimal on-chain data (hash + identity proof only, not content)

  • Token economy for sustainable operation with identity-based reputation

3. Argentine Prescription Tokens

Live Demo | Technical Focus: Embedded Wallets with Healthcare Identity

// Conceptual embedded wallet pattern with healthcare identity
// const embeddedWallet = new EmbeddedWalletClient({
//   mode: 'embedded',
//   keyManagement: 'application-controlled',
//   identityIntegration: true
// });
//
// const prescription = await embeddedWallet.createAction({
//   description: 'issue medical prescription with identity verification',
//   outputs: [prescriptionToken],
//   identityRequirements: {
//     doctor: {
//       certificate: doctorCertificate,
//       selectiveDisclosure: ['medical_license', 'specialization']
//     },
//     patient: {
//       certificate: patientCertificate,
//       selectiveDisclosure: ['identity_verification', 'age_group']
//     }
//   },
//   metadata: {
//     patientId: 'encrypted_with_type42',
//     medicationCode: 'standard',
//     dosage: 'prescribed',
//     prescribingAuthority: 'verified'
//   }
// });

Key Technical Features:

  • Embedded WalletClient - Wallet functionality without external wallet dependency

  • Healthcare Identity Integration - BRC-103 certificates for medical professionals and patients

  • Medical License Verification - Selective disclosure of doctor credentials

  • Patient Privacy Protection - Type-42 encryption for sensitive patient data

  • Healthcare Workflow Integration - Medical prescription as blockchain tokens with identity

  • Compliance Patterns - Audit trails and regulatory requirements with verifiable identities

Healthcare Identity Implementation Patterns:

  • BRC-103 certificates for medical professional licensing verification

  • Patient identity certificates with privacy-preserving selective disclosure

  • Type-42 key derivation for secure patient data encryption

  • Application-controlled key management with identity integration

  • Healthcare-specific token schemas with identity accountability

  • Encrypted metadata for privacy using shared key universes

  • Workflow state as token transitions with identity verification at each step

4. Natural Gas Blockchain - IoT Integration

Live Demo | Technical Focus: IoT & Provenance with Device Identity

// Conceptual IoT device integration with device identity certificates
// const deviceReading = await iotDevice.signData({
//   sensorData: { flow: 1250, pressure: 85, temperature: 22 },
//   location: 'wellhead-001',
//   timestamp: Date.now(),
//   deviceCertificate: deviceIdentityCert,
//   calibrationStatus: 'verified'
// });
//
// const custodyTransfer = await wallet.createAction({
//   description: 'transfer custody token with device and operator identity',
//   inputs: [currentCustodyToken],
//   outputs: [nextStageToken],
//   identityVerification: {
//     device: {
//       certificate: deviceCertificate,
//       selectiveDisclosure: ['device_id', 'calibration_date', 'operator_license']
//     },
//     operator: {
//       certificate: operatorCertificate,
//       selectiveDisclosure: ['professional_license', 'company_affiliation']
//     }
//   },
//   metadata: { deviceReading, chainOfCustody: 'identity_verified' }
// });

Key Technical Features:

  • IoT Device Identity - BRC-103 certificates for device authentication

  • Operator Identity Verification - Professional credentials for human operators

  • Device Calibration Tracking - Selective disclosure of device maintenance status

  • Chain of Custody with Identity - Token transfers with verifiable operator identity

  • Automated Workflows - Smart contract-like behavior through token logic with identity

  • Carbon Credit Provenance - Verifiable origin and processing history with accountability

IoT Identity Implementation Patterns:

  • BRC-103 certificates for IoT device authentication and calibration verification

  • Operator identity certificates with professional licensing verification

  • Device-specific cryptographic signing with identity accountability

  • Token-based custody representation with identity at each transfer

  • Automated state transitions with identity verification requirements

  • Provenance through transaction history with verifiable device and operator identity

  • Type-42 key derivation for secure device-to-device communication

5. Metanet Mobile Wallet

GitHub Repository | Technical Focus: Mobile Architecture

// Conceptual mobile wallet architecture
// class MetanetMobile extends BRC100Wallet {
//   async connectToWebApp(appRequest) {
//     // Standard BRC-100 interface for web app integration
//     return this.handleWalletRequest(appRequest);
//   }
//   
//   async signTransaction(txRequest) {
//     // Mobile-optimized transaction signing
//     return this.mobileSigningFlow(txRequest);
//   }
// }

Key Technical Features:

  • BRC-100 Compliance - Standard interface for web app integration

  • Mobile-First Design - Optimized for mobile device constraints

  • Cross-Platform Compatibility - React Native for iOS/Android

  • Ecosystem Integration - Works with any BRC-100 compliant application

Implementation Patterns:

  • React Native mobile development

  • BRC-100 protocol implementation

  • Mobile-specific UX patterns

  • Secure key storage on mobile devices

🔬 Common Technical Patterns with Identity

Atomic Transaction Design with Identity

All applications use atomic operations with built-in identity accountability:

  • No partial states to manage

  • No complex rollback logic needed

  • No coordination between services required

  • Instant finality through SPV verification with identity proofs

  • Built-in accountability through BRC-103 certificates

BEEF Integration with Identity Proofs

Applications leverage BEEF format for instant verification with identity:

  • Transactions include their own validity proofs and identity certificates

  • No external validation services needed for payments or identity

  • Instant confidence for small payments with verified participants

  • Local header verification sufficient for both transactions and identity

  • Identity certificates embedded in transaction metadata

Token-Based State Management with Identity

Business logic implemented through token operations with identity accountability:

  • Application state as token ownership with verified owners

  • State transitions as token transfers with identity verification

  • Atomic state changes guaranteed with identity accountability

  • Audit trails through transaction history with verifiable participants

  • Identity-based access control and permissions

Wallet Integration Patterns with Identity

Standardized wallet interfaces with identity integration across all applications:

  • BRC-100 compliant communication with identity certificate support

  • Embedded wallets with identity management capabilities

  • User-controlled private keys and identity certificates

  • Seamless cross-application compatibility with identity portability

  • MetaNet Desktop Client integration for identity certificate management

🛠️ Development Insights with Identity

Simplified Architecture with Built-in Identity

Traditional blockchain and identity complexity eliminated:

  • No complex state management or identity infrastructure

  • No external service dependencies for payments or identity verification

  • No coordination between microservices or identity providers

  • No eventual consistency issues in transactions or identity state

  • Built-in identity accountability without additional complexity

Instant User Experience with Identity Verification

SPV verification with identity enables immediate feedback:

  • No waiting for confirmations or identity verification

  • Instant transaction confidence with verified participants

  • Real-time state updates with identity accountability

  • Responsive user interfaces with seamless identity integration

  • Selective disclosure provides privacy without sacrificing verification speed

Scalable Design with Identity Integration

Atomic operations with identity scale naturally:

  • Parallel processing possible for both transactions and identity verification

  • No coordination bottlenecks between payment and identity systems

  • Independent operation validation including identity proofs

  • Linear scaling characteristics maintained with identity integration

  • Identity verification happens locally without external dependencies

🎯 Implementation Takeaways with Identity

For Developers

  1. Think atomically with identity - Design operations as complete units with built-in accountability

  2. Leverage BEEF + Identity - Use built-in SPV verification with identity proofs

  3. Standardize interfaces - Implement BRC-100 with BRC-103 identity integration

  4. Eliminate coordination - Avoid distributed system complexity in both payments and identity

  5. Embrace selective disclosure - Provide privacy while enabling verification

  6. Use Type-42 for privacy - Implement shared key universes for sensitive data

Architecture Principles with Identity

  1. Atomic operations with identity over distributed coordination and separate identity systems

  2. Local verification over external validation for both transactions and identity

  3. Token-based state with identity over database state management and identity providers

  4. Standard interfaces over custom protocols for both payments and identity

  5. Selective disclosure over all-or-nothing identity revelation

  6. Built-in accountability over external audit systems

Ready to build with these patterns? Start with our Hackathon Guide to set up your development environment using LARS and begin implementing atomic BSV applications with built-in identity integration.

🔐 Identity Integration Summary

Each live demo showcases different aspects of identity integration:

  • P2P MNEE: Mutual authentication and selective disclosure in peer-to-peer payments

  • Truth Machine: Professional credential verification for data attestation

  • Prescription Tokens: Healthcare identity with privacy-preserving patient data

  • Natural Gas: IoT device identity and operator credential verification

  • MetaNet Mobile: Identity certificate management and cross-application portability

These patterns demonstrate how identity becomes a natural part of atomic operations rather than a separate system to coordinate with.

PreviousDeveloper FAQ - Atomic Transactions + IdentityNextModule 1: Environment Setup

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