VeilPad

Description

VeilPad is a privacy-focused launchpad that enables users to participate in token sales anonymously and securely using zero-knowledge proofs (ZKPs) and Merkle trees. By leveraging cutting-edge cryptographic techniques, VeilPad ensures that users can prove their eligibility and contributions without revealing sensitive data, making token launches safer, fairer, and more decentralized.

Workflow

1. Whitelist Phase

• Users contribute to the whitelist contract.
• Their addresses are hashed and added to a Merkle tree.
• The Merkle root is updated off-chain and stored on-chain to maintain a decentralized record.

2. Contribution Phase

• After the whitelisting period ends, users contribute to the marketplace contract.
• Their address and contribution amount are hashed and added to another Merkle tree.
• The updated Merkle root is stored on-chain, allowing contributions to be verified without exposing individual details.

3. Claiming Phase

• After the sale period ends, users generate a ZK proof to verify their contribution.
• The proof includes their hashed address, contribution amount, and necessary data.
• If the proof is valid, the token transfer function is called off-chain, ensuring privacy and security.

4. ZKVerify Integration

• VeilPad integrates ZKVerify to enhance verification and security of zero-knowledge proofs.
• The zkverifyjs library is used to seamlessly integrate ZKVerify with the dApp.
• Ensures that all ZK proofs are validated efficiently before token distribution.

Key Features

• Zero-Knowledge Proofs (ZKPs): Users can prove eligibility and contributions without revealing their identity.
• Merkle Tree Storage: Both the Merkle root and individual leaves are stored on-chain for maximum decentralization.
• Privacy-Preserving Token Transfers: Contributions remain hidden until the sale ends, preventing front-running.
• Secure Whitelisting: Participants prove eligibility via cryptographic proofs rather than public lists.
• Decentralized & Trustless: All proofs are verified on-chain, eliminating centralized identity verification.
• ZKVerify Integration: Ensures secure and efficient validation of zero-knowledge proofs.

Technology Stack

• Smart Contracts: Solidity
• ZK Proofs: Circom, SnarkJS
• Backend: TypeScript, Node.js
• Database: MongoDB (for off-chain operations)
• Frontend: React (Vite-based UI)
• Blockchain: Ethereum-compatible networks
• ZK Verification: ZKVerify, zkverifyjs

License

This project is licensed under the MIT License.

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