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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

Added

  • Anchor Health Score: New get_anchor_health_score function that computes a 0-100 health score from cached metadata, combining uptime (40%), reputation (35%), and settlement speed (25%) into a single metric
  • Comprehensive test suite for health score calculation with 12 test cases covering various scenarios
  • Feature documentation for anchor health score (docs/features/ANCHOR_HEALTH_SCORE.md)
  • Quick reference guide for health score usage (docs/guides/HEALTH_SCORE_QUICK_REF.md)
  • Example script demonstrating health score evaluation (examples/health_score_example.sh)
  • Comprehensive CONTRIBUTING.md with contributor guidelines
  • MIT LICENSE file at repository root
  • Unit tests for domain_validator edge cases (Unicode/IDN, IP addresses, trailing slashes, length boundaries)
  • License field to Cargo.toml

Fixed

Breaking Changes

Changed

  • Updated README.md license section to reference LICENSE file

[0.1.0] - 2024-01-01

Added

  • Attestation Management: Register attestors, submit and retrieve attestations with replay attack protection
  • Endpoint Configuration: Manage attestor endpoints for off-chain integration
  • Unified Anchor Adapter: Consistent API for multiple anchor integrations
  • Session Management: Group operations into logical sessions for traceability
  • Audit Trail: Complete immutable record of all operations
  • Reproducibility: Deterministic operation replay for verification
  • Replay Protection: Multi-level protection against unauthorized replays
  • Secure Credential Management: Runtime credential injection with automatic rotation
  • Domain Validation: HTTPS-only domain validation with comprehensive edge case handling
  • Transaction State Tracker: Track and manage transaction states
  • Response Validator: Validate anchor responses with error handling
  • Service Capability Discovery: Discover anchor services (deposits, withdrawals, quotes, KYC)
  • Anchor Info Discovery: Fetch and parse stellar.toml, cache assets/fees/limits
  • Health Monitoring: Monitor anchor latency, failures, and availability
  • Metadata Caching: TTL-based caching with manual refresh
  • Request ID Propagation: UUID per flow with tracing
  • Event Emission: Emit events for all state changes
  • Comprehensive Error Handling: Stable error codes (100-120) for API compatibility
  • CLI Tool: Command-line interface for contract interaction
  • Cross-Platform Support: Linux, macOS, and Windows compatibility
  • Configuration Validation: Validate configuration files with JSON schema
  • Environment Diagnostics: Doctor command for troubleshooting setup issues

Security

  • Stable error codes for API compatibility
  • Replay protection at multiple levels
  • Immutable audit logs
  • Authorization checks on all operations
  • Complete operation context for verification

Performance

  • Efficient storage with TTL management
  • Minimal event data
  • Sequential IDs (no hash lookups)
  • Optimized for Soroban constraints

[0.0.1] - 2023-12-01

Added

  • Initial project structure
  • Basic contract skeleton
  • Core type definitions
  • Error handling framework