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contract-verifier-backend

A backend used for compiling FunC code and returning a signed message containing a proof of verification to be forwarded to the Sources Registry contract. The signed message is later stored on a source item contract as a proof that the source code compiles to a specific code cell hash.

Related repositories

This repo is a part of the following:

  1. contract-verifier-contracts - Sources registry contracts which stores an on-chain proof per code cell hash.
  2. contract-verifier-backend (this repo) - Backend for compiling FunC and returning a signature over a message containing the resulting code cell hash.
  3. contract-verifier-sdk - A UI component to fetch and display sources from Ton blockchain and IPFS, including code highlighting.
  4. contract-verifier - A UI app to interact with the backend, contracts and publish an on-chain proof.

Configurations

The backend supports compiling in func in all versions stated in the config file

Preqrequisites

Binaries + fiftlib

Binaries can be acquired (precompiled) from ton-binaries repo or from the official ton repo.

Fiftlib can also be acquired from the same repo.

Heroku

To deploy on heroku, you can use the func compilation buildpack.

Locally

  • Ensure you have working binaries for func 0.2.0/0.3.0/0.4.0 + fiftlib in this format:
  resources/
    binaries/
      0.2.0/fift
      0.2.0/func
      0.2.0/fiftlib (directory)
      0.3.0/fift
      0.3.0/func
      0.3.0/fiftlib (directory)

Environment variables

  • INFURA_ID and INFURA_SECRET - The backend persists sources and compilation metadata to an infura IPFS node.
  • PRIVATE_KEY - To sign its message cell with a private key, which is verified by the verifier registry. Provide an ED25519 compatible private key.
  • SOURCES_REGISTRY - The address of the sources registry contract (default from .env)
  • VERIFIER_ID - Sources verifier id (default from .env)

Running

  • npm install
  • npm run start

License

MIT