M-Sai-Ruthvik/Virtual_Chip_Signature_System — reverse-engineered prompt

I want a working demo app for a virtual chip based digital signature system that feels complete and easy to try. The main experience should be a simple web page where I can type a message, generate a signature, see the message hash plus the signature parts, and then verify it either right in the browser or on Ethereum Sepolia with MetaMask.

Please wire up the frontend, the backend API, and the blockchain verification flow so it actually runs end to end. The backend should expose the basic sign, verify, and status routes, include sensible validation and rate limiting, and show whether the signing service is healthy. The UI should show live backend status, keep my current session around, and make errors understandable.

There also seems to be Verilog and FPGA related work in this repo, so treat that as the hardware inspired signing layer or simulation piece and connect it into the demo where practical without overcomplicating it. Make it runnable locally with clear setup and start commands. If anything is outdated, look up the current docs online and fix it.