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VSC WordPress MVP Demo

Demo Summary

A WordPress-style folder (test-wp/) was backed up once as a base snapshot. Two later changes — one to the database export, one to a plugin file — were captured as ordered delta tokens. The three tokens were assembled into a delta chain, and the latest folder state was reconstructed from base + deltas and verified by root hash.

This demonstrates the core VSC claim: store a full state once, then store only what changed.

Token Flow

21A8390BFA3F  ← Base snapshot (full WordPress-style folder, 1.58 MB)
  ↓ Delta 1: database.sql changed
F3876A4BCFE1  ← Delta token (376 B stored)
  ↓ Delta 2: vsc-demo-plugin.php changed
954BEB0FF3AA  ← Delta token (265 B stored)

Chain: DDE0844718A5  ← Ordered chain of base + 2 deltas

Storage Report

Metric Value
Base size 1.58 MB
Delta 1 376 B
Delta 2 265 B
Total delta size 641 B
Traditional full-copy size (3× snapshots) 4.75 MB
VSC storage size (base + deltas) 1.58 MB
Saved 3.17 MB
Total chain reduction vs full-copy 66.65%
Delta-only reduction 99.96%

The delta-only reduction (99.96%) reflects that only 641 B of actual changes were stored across two versions. The total chain reduction (66.65%) reflects VSC vs a naive 3-snapshot full-copy strategy.

Changed Files

  • database.sql — Delta 1
  • wp-content/plugins/vsc-demo-plugin/vsc-demo-plugin.php — Delta 2

Verification

The latest reconstructed folder root hash matched the expected target root hash stored in the chain token. verify-chain returned PASS. verify-all returned FAIL: 0.

Commands

Build the chain:

npm run create-chain output\vsc-21A8390BFA3F-folder-recovery.json output\vsc-21A8390BFA3F-to-F3876A4BCFE1-folder-delta.json output\vsc-F3876A4BCFE1-to-954BEB0FF3AA-folder-delta.json

Report storage metrics:

npm run report-chain output\vsc-chain-21A8390BFA3F-to-954BEB0FF3AA.json

Restore latest state:

npm run restore-chain output\vsc-chain-21A8390BFA3F-to-954BEB0FF3AA.json

Verify restored state:

npm run verify-chain output\vsc-chain-21A8390BFA3F-to-954BEB0FF3AA.json output\chain-21A8390BFA3F-to-954BEB0FF3AA\restored-test-wp

Verify all tokens:

npm run verify-all

Claim

VSC stores a full WordPress-style state once, then stores only ordered, verifiable deltas. The latest state can be reconstructed from base + deltas and verified by root hash. This is a local proof-of-concept. It does not involve a production server, API, or database.