Midnight Korea Hackathon Winners Target Grants, Housing and Supply Chains

Midnight’s October 27 network update highlight three winning projects from im Korea Hackathon, wey 38 teams submit working decentralized applications we dem build with Compact, di network smart contract language. Di competition September development phase end with October 2 showcase for Seoul we involve CertiK and Seoul Fintech Lab.

Three Applications for Midnight’s Privacy Technology

JustEnough focus on how to verify eligibility for grants and public programs without make applicants dey submit dia personal documents to each program. Safejeonse tackle another information problem for housing: how to check rental deposit safety while still keep other tenants financial details private.

Veilance apply private verification to supply chains. Midnight describe am as tracker to prove recycled material content for EU regulatory requirements without exposing suppliers trade secrets. Di developer, Juho Lee, describe demo wey connect mines, refiners, and battery manufacturers through digital provenance certificates. Those certificates carry information wey different participants fit verify without receiving di full transaction record.

Verifying Eligibility and Preventing Duplicate Claims

JustEnough project documentation describe process wey issuer first attest to applicant attributes. Di applicant then generate zero-knowledge proof to show say private credential meet program published conditions. Example combine age range, residence for Seoul, and enrollment status.

Di contract still record program-specific identifier, dem dey call am nullifier, to reject repeat claims wey use di same credential. Dis one separate eligibility verification from duplicate-claim prevention while e still avoid disclose di applicant underlying attributes. Di prototype use demonstration issuer account; di issuer still know di information we e attest to.

Veilance use related mechanism for provenance certificates. According to Lee, certificates dey recorded through cryptographic commitments, and transfers dey leave nullifier wey prevent di same certificate from being reused. Consumers, procurement teams, and regulators fit check different conditions, including certified origin, holder authorization, and whether carbon grade fall below specified threshold. Original certificates dey encrypted for dia recipients.

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Demonstrations and Further Development

Di projects documentation differentiate dia demonstrations from broader deployment. Lee describe local development-network scenario for Veilance wey cover certificate issuance, transfer, verification, and rejection of reused certificate. Di implementation include web interface and backend to manage participating wallets.

JustEnough offer browser simulator wey allow users explore credential issuance, eligibility decisions, and rejected duplicate applications without install wallet. Im documentation specify say actual zero-knowledge proofs dey generated for di network build. Planned extensions include mobile wallet access, additional eligibility rules, and independent circuit audit. To move beyond di demonstration issuer go require integration with trusted credential providers and support for credential revocation and expiration.