worldid

Dcrowd: Decentralized funding with proof of identity

A decentralized weather betting Dapp that makes forecasting fun and rewarding. By Tsinghua University Blockchain Association (THUBA) for ETHGlobal Sydney 2024.

First place for Best Use of ENSv2, ETHONLINE 2026 hackathon. An onchain inheritance platform with ENSv2 subnames & World ID. If owners aren't alive, heirs gain access.

A borrower-owned financial passport: prove your income and savings qualify for a loan, to any lender, without handing over a document. ETHGlobal Tokyo 2026.

Human accountability for sybil-resistant agent commerce onchain.

The universal KYC layer for all centralized and decentralized platform.

End-to-end verifiable, anonymous, coercion-resistant voting dApp on Polygon Amoy. Semaphore V4 zero-knowledge proofs, exponential ElGamal homomorphic tally with a proved decryption, World ID and Self for eligibility. Bachelor's thesis (TFG). Source public for audit; all rights reserved.

Browser-based Groth16 vs PLONK demo — trusted setup ceremonies, proof size comparison, the toxic waste problem, and production deployments in Zcash, Polygon zkEVM, WorldID, and zkLogin.