What is ZK technology in blockchain development?

[dinastafi]

Zero-Knowledge (ZK) technology allows one party to prove to another that a statement is true without revealing any other information. In blockchain, ZK tech development enhances privacy, scalability, and security. ZK-rollups process transactions off-chain and publish proofs on-chain, reducing gas costs while maintaining integrity. ZK-SNARKs and ZK-STARKs are cryptographic methods widely used in projects like zkSync, StarkNet, and Polygon zkEVM. For developers, integrating ZK proofs requires understanding cryptographic libraries, verifiers, and circuits. In 2025, ZK tech is a game changer for DeFi privacy, airdrop verification, KYC-less identity, and on-chain gaming. It’s becoming a core building block for next-gen Web3 applications.