🌉 Implement Quantum-Safe Bridge Checkpoints

[zeekay]

Add Y-Chain integration to the bridge for quantum-resistant security checkpoints.

Motivation

With quantum computing threats emerging, we need to checkpoint bridge state using quantum-safe signatures on Y-Chain.

Timeline (3 weeks)

Week 1 (Feb 10-14, 2025)

• Y-Chain Integration (3 days)
  • Add SPHINCS+ signature support
  • Implement checkpoint submission logic
  • Create verification contracts

Week 2 (Feb 17-21, 2025)

• Bridge Contract Updates (4 days)
  • Add checkpoint verification
  • Implement rollback mechanism
  • Update MPC coordinator
  • Gas optimization

Week 3 (Feb 24-28, 2025)

• UI & Testing (3 days)
  • Add checkpoint status display
  • Show quantum-safe indicators
  • Integration tests
  • Load testing

Technical Architecture

Bridge State -> Y-Chain Checkpoint (every 100 blocks)
             -> Bitcoin Anchor (every 1000 blocks)
             -> IPFS Backup (continuous)

Key Features

• Automatic checkpointing every 100 blocks
• Manual checkpoint triggers for large transfers
• Quantum-safe state recovery
• Bitcoin anchoring for immutability

Acceptance Criteria

• Checkpoints created automatically
• < 30 second checkpoint time
• Successfully recover from checkpoint
• UI shows quantum-safe status

Assignee: @zeekay
Priority: P1 - HIGH
Due Date: February 28, 2025