Attestable
Zero-knowledge Proofs to Guarantee the Safety of AI Systems Worldwide
Company Overview
Snapshot
Founded in July 2025 by Yogev Bar-On, Shahar Papini, and Shahar Samocha, Attestable operates with 11–50 employees. The company has raised $20 million across one funding round, with Altimeter Capital and TLV Partners leading the Seed round in August 2026.
Business overview
Attestable develops a software-only integrity layer for AI systems, leveraging zero-knowledge proofs to verify that an output was computed from the claimed model and input without revealing proprietary information like model weights, architecture, or sensitive data. This technology is designed for frontier AI labs, critical infrastructure operators, governments, and enterprises utilizing AI in high-stakes workflows, enabling third parties to detect tampering and verify security commitments without reliance on trusted hardware or operators. The company primarily operates within the Cyber Security sector, focusing on Data Security and Artificial Intelligence technologies for enterprise and professional services customers.
Strategic signal
In August 2026, Attestable secured $20 million in a Seed funding round led by Altimeter Capital. This significant capital injection, occurring shortly after its founding in July 2025, signals strong investor confidence in Attestable's innovative approach to AI security and its potential to address critical integrity challenges in AI systems for high-stakes environments.
Company Intelligence Q&A
- What is Attestable's core technology?
- Attestable builds a software-only integrity layer for AI systems using zero-knowledge proofs. This technology verifies that an output was computed from the claimed model and input without revealing model weights, proprietary architecture, or sensitive data.
- When was Attestable founded?
- Attestable was founded in July 2025.
- Who are the founders of Attestable?
- Attestable was co-founded by Yogev Bar-On, Shahar Papini, and Shahar Samocha.
- What was a key funding event for Attestable?
- In August 2026, Attestable raised $20 million in a Seed funding round. The round was led by Altimeter Capital and TLV Partners.
- Which markets does Attestable target?
- Attestable targets frontier AI labs, critical infrastructure operators, governments, and enterprises running AI in high-stakes workflows, enabling them to detect tampering and verify security commitments.