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Zero-Knowledge Proof

A cryptographic method that lets one party prove a statement is true without revealing any information beyond its validity.

FBFenwei BianAuthorVZVictor ZhouEditorJuly 2, 2026
  • glossary

A zero-knowledge proof (ZKP, also called a ZK proof) lets a prover convince a verifier that a statement is true without revealing the statement's underlying data, satisfying three properties: completeness (valid inputs always pass), soundness (invalid inputs cannot be faked), and zero-knowledge itself (the verifier learns nothing beyond validity). ZK-rollups are the largest blockchain application, batching transactions off-chain and posting a single validity proof that a base layer verifies cheaply, while Zcash-style shielded payments use zk-SNARKs to hide transaction amounts and addresses while still proving correctness. Generating a proof is computationally expensive, but verifying one is fast, which is why ZKPs pair well with a hash function-based commitment scheme for compact on-chain checks. Related privacy techniques include fully homomorphic encryption, secure multi-party computation, and trusted execution environments, each trading off performance and trust assumptions differently. As tokenized assets like domains move on-chain, ZKPs are the primitive most likely to let owners prove eligibility or solvency for a transaction without exposing their full holdings, extending the cryptographic security model already protecting wallet keys.

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Contributors

Fenwei Bian

Software Developer & Writer • Namefi
Author

Fenwei Bian is a software developer in her thirties who spends her working hours in pull requests and her weekends with her hands in soil or sawdust. Years of open source on GitHub taught her that names are interfaces: a good one is clear, honest about what it does, and kind to whoever has to use it next.

She gardens because it rewards patience and punishes wishful thinking, and she does woodwork because a joint either fits or it doesn't. Both habits show up in how she writes about naming — measure twice, check the source, and don't sand over a rough spot and hope no one notices.

For Namefi she writes about how domain markets actually move, the practical trade-offs of tokenizing and flipping names, and picking a domain you'll still be glad you own in twenty years.

GitHub

Victor Zhou

Founder & Standards Editor • Namefi
Editor

Victor Zhou is a technology founder and standards editor focused on digital identity and trust. He founded Namefi, edits Ethereum Improvement Proposals, and previously led smart-contract architecture work at Google Labs.

His work sits at the intersection of naming, ownership, and the systems people use to establish identity online. That perspective makes him especially interested in the way names move between personal meaning, public recognition, and digital infrastructure.

For Namefi, Victor edits and writes about domains as durable digital identity: how names become ownable onchain assets, how tokenization changes custody and trust, and what naming can learn from the systems people use to establish identity online.

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