Work in progress...

Frederico Stefano Rocha

Privacy should not be an unavoidable cost to prove who a person is. In the current scenario, a large part of identity verification mechanisms, especially those focused on age confirmation, depend on the collection, transmission, and storage of sensitive data. Official documents, facial analysis, and financial information are sent to centralized systems under the justification of security and compliance. However, even when well-intentioned, these practices increase the individual's exposure, create single points of failure, and raise the risk of leaks.

Zero Leak emerges as an alternative proposal to this model. Instead of basing verification on raw data provided to the verification system, the approach shifts trust to cryptographic mechanisms that allow attributes to be proven without revealing their sources through mathematical logic. Thus, the user maintains total control over their personal data, and the verification system receives only the result necessary to authorize or deny an action.

This approach is guided by clear principles: the proof belongs to the user, not to a central database; verification must occur without exposing sensitive information; Authentication must be based on cryptographic challenges and temporary sessions; and the data collection surface must remain as small as possible. Based on these fundamentals, Zero Leak explores technical integrations, such as the use of the Solana network for public anchoring of verifiable elements on the blockchain, which allow for the creation of an auditable model without sacrificing privacy.

Technically, this means that sensitive data does not need to leave the user's device; by design, control remains in their hands. The blockchain records only minimal, non-identifiable fragments, sufficient to make the evidence verifiable by third parties, but incapable of revealing personal information. The verifier does not receive documents, dates of birth, images, or biometrics. They receive only a binary validation: the criterion was met or not.

In practice, this architecture seeks to reduce dependence on central databases, limit unnecessary data exposure, and allow attribute verifications with the minimum possible information collection for specific purposes. The purpose of Zero Leak is not to present a final solution, but to point in a direction: systems where verification does not require continuous exposure of personal data. It's an invitation to rethink the balance between security and privacy, replacing the logic of data collection with the logic of proof. It's our "I think, therefore I am" version 3.0: "I prove it, but I don't expose myself".

Founder, Zero Leak

2026