HOW IT SITS ON THE PROTOCOL
RailHub aggregates the proof — never the data.
Every machine runs the protocol free: human-approved airlock, Ed25519-signed receipts, minted and stored locally, verifiable offline. That never changes and never phones home.
RailHub subscribes to signatures and outcomes only. The org sees that an action was approved, by whom, and that its receipt verifies. Payloads never leave the machines they ran on.
✓Receipts stay on the machine that minted them. RailHub holds hashes and signatures.
✓Verification works offline — an auditor never needs RailHub to check a receipt.
✓Pull RailHub out tomorrow: every machine keeps running, fully governed, free.