Integrating ZK proofs in DeFi involves three steps: generate a circuit, create a proof, and verify on-chain. First, define the logic (e.g., identity verification or transaction validity) using Circom or Noir. Next, generate and sign ZK proofs using libraries like SnarkJS. Deploy a smart contract with an embedded verifier that checks the proof’s authenticity. In use cases like private lending or voting, ZK tech development allows users to prove collateral or eligibility without revealing exact data. Integrating ZK into frontends requires adapting to proof generation delays and UX design. However, done right, it gives privacy and scalability without compromising trust.