Model Integrity Verification: Weight-Checksum Tamper Detector (2D)

This 2D companion draws the same small feed-forward network as the 3D lab as a flat, pannable node-and-edge diagram, and runs the identical supply-chain-attack-versus-checksum defense: a random weight gets silently substituted at a configurable rate, and a rolling polynomial hash computed over fixed-size weight blocks periodically re-verifies every block against its signed digest, flags any mismatch, rolls the block back to its trusted values, and logs the detection latency. Turn signing off and the same attacks keep happening but nothing catches them, making the "silent corruption" blind spot of an unsigned MLOps pipeline directly visible. Drag to pan the diagram and scroll to zoom in on individual blocks.