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SDK Design Philosophy

This document details the core principles behind the BSV TypeScript SDK architecture and design decisions.

Zero Dependencies

The SDK is built without external dependencies to:

  • Minimize security attack surface
  • Reduce bundle size and complexity
  • Ensure long-term stability
  • Provide predictable behavior

SPV-First Approach

The SDK prioritizes Simplified Payment Verification:

  • Lightweight: No need to download the full blockchain
  • Efficient: Verify transactions using merkle proofs
  • Scalable: Works with millions of transactions
  • Secure: Cryptographically verifiable without full nodes

Vendor Neutrality

The SDK works with any compliant Bitcoin infrastructure:

  • Wallet Agnostic: Supports any BRC-100 compliant wallet
  • Network Flexible: Works with different chain tracking services
  • Service Independent: No lock-in to specific providers

Modular Design

Components are designed to work independently:

  • Composable: Mix and match functionality as needed
  • Extensible: Easy to add custom implementations
  • Testable: Each component can be tested in isolation
  • Maintainable: Clear separation of concerns

TypeScript-First

Built specifically for TypeScript to provide:

  • Type Safety: Catch errors at compile time
  • Developer Experience: Rich IDE support and autocomplete
  • Documentation: Types serve as living documentation
  • Reliability: Reduced runtime errors

Security by Design

Security considerations are built into every component:

  • Cryptographic Primitives: Secure implementations of Bitcoin cryptography
  • Input Validation: All inputs are validated and sanitized
  • Error Handling: Comprehensive error handling prevents information leakage
  • Best Practices: Follows established security patterns

Performance Focused

Optimized for real-world application needs:

  • Memory Efficient: Minimal memory footprint
  • Fast Execution: Optimized critical paths
  • Batch Processing: Support for high-throughput scenarios
  • Caching: Intelligent caching where appropriate

Developer-Friendly

Designed to make Bitcoin development accessible:

  • Clear APIs: Intuitive method names and parameters
  • Comprehensive Documentation: Tutorials, guides, and references
  • Working Examples: Real code that developers can use immediately
  • Progressive Complexity: Start simple, add complexity as needed

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