Developed VeProof, a new application within the vechain/app-hub repository, to provide proof of existence and integrity for documents on the VeChain blockchain. The work focused on integrating on-chain document verification into the App Hub architecture, establishing a reusable pattern for blockchain-based proofs. Leveraging skills in application development, blockchain development, and smart contracts, the solution enables verifiable provenance and lays the groundwork for regulatory-compliant workflows and future audit capabilities. The implementation used JSON for data handling and smart contract interactions, supporting extensibility for additional document types, revocation checks, and audit trails while aligning with broader adoption goals for the platform.