Hester Peirce Wants Zero-Knowledge Proofs to Shrink Crypto’s KYC Data Honeypots

Crypto’s privacy problem starts with companies collecting sensitive customer data. The same people are then asked to hand over that data again and again, creating more databases for criminals to target.

SEC Commissioner Hester Peirce says modern cryptography offers a better way.

In remarks at SIFMA’s Digital Assets Conference, Peirce argued that financial firms should be able to verify specific compliance facts without automatically collecting and storing the raw personal information behind them. The tools she highlighted include attribute-based credentials and zero-knowledge proofs.

In her official SEC remarks, Peirce described a system in which a credential could confirm that a customer is old enough, is a U.S. citizen, qualifies as an accredited investor, or is absent from sanctions lists without revealing the underlying name, income or address to every counterparty.

A zero-knowledge proof can answer a narrow question—does this person meet the rule?—without exposing the full data set used to reach that answer. That is a meaningful shift from today’s KYC model, where many firms independently gather names, birth dates, addresses, identification numbers and transaction records.

Cointelegraph summarized the core proposal and Peirce’s warning that current KYC and anti-money-laundering practices create enormous “data haystacks.”

🚨 LATEST: SEC Commissioner Hester Peirce says zero-knowledge proofs could verify compliance without collecting users’ personal data.

She warns current KYC/AML practices create “data haystacks.” pic.twitter.com/oiNM8q7CFz

— Cointelegraph (@Cointelegraph) September 24, 2026

Peirce still wants financial institutions to check customers. She argues that collecting more data does not automatically produce better enforcement.

Every extra copy of a driver’s license, home address or account history becomes another potential breach point.

CryptoSlate’s reporting emphasizes that this duplication turns compliance databases into high-value honeypots. A customer verified by one trusted regulated institution may still have to repeat the entire process elsewhere, multiplying both cost and exposure.

Peirce urged regulators to reconsider whether they need each specific data field, whether a verified attribute would be enough, and whether multiple firms truly need to hold the same information. She also called for easier reliance on trusted third-party identity verification.

SEC Commissioner Peirce Calls for Zero-Knowledge Proofs to Replace Data-Heavy KYC/AML Practices

SEC Commissioner Hester Peirce said the agency’s Innovation Exemption provides a temporary pathway for tokenized securities to trade through AMMs, helping prevent overseas markets… pic.twitter.com/mWMTUCaOv4

— Wu Blockchain (@WuBlockchain) September 24, 2026

Public blockchains already create permanent, auditable transaction records. Pairing that transparency with privacy-preserving identity credentials could give investigators useful signals while reducing the amount of personal data companies retain.

The hard part is no longer proving the cryptography can work. The hard part is building a regulatory framework that lets institutions rely on it.

Peirce is calling for that change as she approaches the end of her SEC tenure. Her proposal directly challenges the assumption that effective compliance requires ever-larger stores of customer information.

If regulators accept the difference between verifying a fact and possessing the data behind it, crypto could help make financial compliance more private and more secure.

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