Melody
06/24 04:55
StarkWare wants KYC checks without full passport exposure
Summary
Private KYC lets users prove age facts without sending companies complete identity documents or addresses.
StarkWare links the demo to STRK20 privacy tools built for selective disclosure and onchain verification.
The launch follows rising breach costs and concern over large databases holding personal KYC records.
The system uses zero-knowledge STARK proofs and STRK20 privacy features to confirm specific facts, such as age, valid credentials or eligibility.
“Identity checks today ask for your whole document when they only need one fact,” said the Starknet team.
The system aims to let verifiers confirm what they need while keeping passport details, addresses and other personal data away from company databases.
Private KYC, on Starknet.Identity checks today ask for your whole document, when they only need one fact. With STRK20’s selective disclosure, apps can verify what matters without taking custody of your data.Prove the fact, not the file.🧵 in QRT https://t.co/9hbLb4dcUv— Starknet (Privacy Arc) (@Starknet) June 23, 2026
The process starts when a user scans a passport on a phone. The phone camera and NFC chip check that the document is genuine and signed by its issuing authority. After that, users can encrypt identity data to a Starknet wallet.
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StarkWare said users can register selected attributes in a public onchain registry. Verifiers can then check zero-knowledge proofs against that registry without seeing the identity data behind them.
Data breach risk shapes the rollout
The launch comes as companies face growing costs from storing personal data. KYC checks often require passports, addresses and other records. Those records can create risk once they sit inside company systems.
The Identity Theft Resource Center reported 3,322 U.S. data compromises in 2025, a record total and a 79% increase over five years. IBM also placed the global average cost of a data breach at $4.4 million in its 2025 report.
Crypto users have already seen the risk of exposed identity data. Ledger suffered a 2020 breach that exposed more than 1 million email addresses. The leaked data also included names, phone numbers and physical addresses.
“Private KYC shows that verification and privacy aren’t a trade-off,” said StarkWare.
The company said institutions should be able to confirm exact requirements without creating another copy of someone’s identity to protect.
STRK20 provides the privacy layer
Private KYC builds on Starknet’s wider STRK20 privacy framework. STRK20 lets ERC-20 assets use shielded balances and private transfers while keeping a path for lawful, targeted disclosure when required.
As previously reported by crypto.news, Starknet launched STRK20 privacy for ERC-20 tokens earlier this month. The system lets users move assets between public and shielded states, while zero-knowledge proofs confirm that private actions follow network rules.
STRK20s is officially live.Practical privacy for all assets, accessible in one click, with deep DeFi integration.We’re fixing onchain privacy for good, and for everyone. https://t.co/5eEG011zBz— StarkWare 🥷 (@StarkWareLtd) June 9, 2026
In a recent update, crypto.news covered StarkWare and Sui as both projects moved toward privacy tools with compliance features. StarkWare said STRK20 should not be viewed as a guarantee of legal approval, but as a risk-based framework.
Private KYC applies that same approach to identity checks. It does not remove KYC. It limits what companies receive when they only need to confirm one fact.
Self-custody model sets it apart
The system uses a self-custody model tied to a Starknet wallet. That means users keep control over encrypted identity data instead of sending complete files to every platform that asks for verification.
The model differs from World ID, which also uses zero-knowledge proofs but has faced criticism over biometric checks through iris-scanning hardware. StarkWare’s demo focuses on passport-based checks, phone verification and selective disclosure through Starknet.
Adoption will depend on legal review, app support, verifier trust and security testing. For now, the demo adds identity verification to StarkWare’s privacy roadmap and places KYC data exposure at the center of the discussion.
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