Add RustChain - Novel Proof-of-Antiquity consensus

[HuiNeng6]

RustChain is a novel blockchain with Proof-of-Antiquity consensus.

• GitHub: https://github.com/Scottcjn/Rustchain
• Description: Proof-of-Antiquity blockchain where vintage hardware earns higher rewards. Novel consensus mechanism based on hardware attestation.
• Key Features:
  • Hardware-fingerprinted proof-of-work
  • Supports 15+ CPU architectures
  • Rust + Python hybrid implementation
  • RTC token with Solana bridge (wRTC)

Entry format:

• RustChain - Proof-of-Antiquity blockchain with hardware-fingerprinted consensus. Vintage computers earn more than modern hardware.