Vericode
A Web3 Coding Test and Certification Platform Based on EDU Chain and Arbitrum with zkVerify
Demo
About
The problem it solves ## Problem In the current digital landscape, verifying programming skills is inefficient, centralized, and lacks reliability. - Traditional coding test platforms rely on centralized servers, posing data leakage risks and privacy concerns. - Coding test results and certificates are prone to forgery, making them unreliable as proof of skills. - Developers struggle to verify and showcase their coding abilities effectively. ## Solution Vericode utilizes zkVerify and Open Campus' EDU Chain as the primary network while supporting Arbitrum to provide a secure and reliable coding test and verification system. - Developers take coding tests, and their results are verified using Zero-Knowledge Proofs (ZK Proofs). - Successful candidates receive blockchain-based certificates (NFT/ID cards) to prove their skills. - All certification data is stored on EDU Chain by default, with Arbitrum integration ensuring scalability and flexibility.
How it's made
Challenges we ran into During the proof submission process, a Public Input size mismatch error occurred. This was caused by the Public Input data being submitted as a Hex string instead of the required 32-byte format. Additionally, there was a discrepancy between the Verification Key structure generated by Snark.js and the format expected by zkVerify, leading to verification failures. # Solutions - **Adjusted Public Input size:** Converted the data to BigNumber and applied 32-byte padding to match the required submission format. - **Modified Verification Key structure:** Added a getter function to the Snark.js Verification Key to ensure compatibility with zkVerify’s required format.