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Sample Unirep Project

This project demonstrates a basic Unirep application. It comes with a sample contract, a test for that contract, and a script that deploys that contract.

Try running some of the following tasks:

Compile

yarn build

Test

Running All Tests

yarn test

Running Single Test File

SignupAndPost

yarn contracts test ./test/SignupAndPost.test.ts

Comment

yarn contracts test ./test/Comment.test.ts

Deploy to local hardhat network

yarn hardhat node

and

yarn deploy

Contract Explanation

variables

  1. latestPostId: A global variable to record the latest post ID.

mappings

  1. postCommentIndex:
    • postId uint256 => commentId uint256
    • To maintain & record the comment id for each post
  2. epochKeyCommentMap a 2-layer mapping:
    • epochKey uint256 => ( postId uint256 => commentId uint256)
    • To store the epoch key for each post-comment pair
  3. proofNullifier
    • proof bytes32 => bool
    • To check if the same proof is used before.
  4. userRegistry
    • userId uint256 => bool
    • To check if same user id is used before.