Versioning & Integrity

Context Nest provides a tamper-evident version history for every document, with cryptographic hash chains and vault-level checkpoints.

Key concepts

• Version history — Every publish creates a version entry in history.yaml with content hash and chain hash
• Keyframes + diffs — Full snapshots at regular intervals, diffs between them for storage efficiency
• Checkpoints — Vault-level atomic snapshots (like git commits) that pin document versions together
• Hash chains — SHA-256 chains binding each version to its predecessor, making tampering detectable

CLI commands

ctx history nodes/architecture    # Show version history
ctx reconstruct nodes/architecture 3  # Reconstruct version 3
ctx verify                        # Verify all hash chains
ctx checkpoint list               # List checkpoints
ctx checkpoint rebuild            # Rebuild checkpoint history