cryptonote-nodejs-pool/docs/IMPLEMENTATION_SUMMARY.md

Salvium Fork Implementation Summary

Overview

Successfully implemented height-triggered hard fork mechanics for Salvium coin in cryptonote-nodejs-pool with 100% backward compatibility.

Implementation Details

Core Changes Made

1. Configuration Schema (config.json)

Added complete Salvium configuration section:

• Height thresholds for all fork phases
• Address prefixes for both Cryptonote and Carrot formats
• Pool and donation address settings
• Configurable address separator

2. Utility Functions (lib/utils.js)

Added comprehensive Salvium support:

• isSalviumEnabled(): Conditional activation check
• getSalviumState(height): Height-based state determination
• validateSalviumAddress(): Custom Base58 prefix validation
• parseSalviumDualAddress(): Dual address parsing
• getSalviumPoolAddress(): Dynamic pool address selection
• Enhanced validateMinerAddress() with Salvium support

3. Pool Login Handling (lib/pool.js)

Modified miner login validation:

• Height-aware dual address requirement (1050+)
• Clear error messages for invalid login formats
• Backward compatible address parsing
• Uses current block height from currentBlockTemplate[0].height

4. Payment Processing (lib/paymentProcessor.js)

Implemented fork-aware payment logic:

• Payout blackout during heights 815-999
• Dynamic address switching to carrot addresses at height 1100+
• Height-based payment destination logic
• Maintains existing payment ID support

Fork Mechanics by Height

Height Range	State	Behavior
0-814	normal	Standard operation
815-999	payout_blackout	Shares accepted, payments blocked
1000-1049	payout_resume	Normal payments resume
1050-1099	dual_required	Dual address mandatory, pay to cryptonote
1100+	carrot_payouts	Pay to carrot addresses

Address Format Support

Pre-1050: Single Address

SaLv123abc...

1050+: Dual Address Required

SaLv123abc...+SC1def456...

Backward Compatibility

Zero Impact on Existing Pools

• All logic gated behind config.salvium.enabled check
• Non-Salvium pools operate unchanged
• No performance overhead when disabled
• Existing APIs and behavior preserved

Testing Results

✅ All Tests Passed

• State transitions working correctly
• Dual address parsing functional
• Height-based validation operational
• Payment address switching working
• Backward compatibility verified
• Payout blackout logic implemented

Documentation and Examples

Files Added

• docs/SALVIUM.md: Comprehensive documentation
• config_examples/salvium.json: Production-ready configuration example

Features Documented

• Complete setup instructions
• Miner usage guidelines
• Address validation details
• Implementation specifics

Production Readiness

✅ Requirements Met

• Conditional Activation: All logic opt-in via config flags
• Configuration Driven: All parameters in config.json
• Backward Compatibility: Zero impact on existing pools
• Symbol Transition: Ready for SAL → SAL1 at height 815
• Payout Blackout: Heights 815-999 implementation
• Dual Address Login: Mandatory at height 1050+
• Carrot Address Switching: Height 1100+ payouts
• Custom Address Validation: Salvium Base58 prefixes

Security Considerations

• Input validation on all address formats
• Height-based state validation
• Error handling for invalid configurations
• Clear user feedback for invalid login attempts

Performance Impact

• Minimal overhead: O(1) height checks
• No impact when Salvium disabled
• Efficient address parsing
• Preserved existing pool performance

Next Steps

For Pool Operators

1. Update config.json with Salvium configuration
2. Set appropriate pool and donation addresses
3. Configure fork heights as needed
4. Test with example configuration

For Miners

1. Use standard address until height 1050
2. Switch to dual address format at height 1050
3. Follow format: cryptonote_address+carrot_address

Conclusion

The Salvium fork mechanics implementation is production ready and provides:

• Complete height-triggered fork support
• Full backward compatibility
• Comprehensive documentation
• Extensive testing validation
• Zero impact on existing deployments

Successfully delivered all requirements with minimal code changes and maximum compatibility. 🎉