Attestable

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 from 7 investors, with Altimeter Capital and TLV Partners leading the most recent round. In August 2026, Attestable secured its seed funding round, co-led by Altimeter Capital.

Business overview

Attestable develops a software-only integrity layer for AI systems, utilizing zero-knowledge proofs to verify that an output was computed from the claimed model and input without exposing proprietary information. This technology targets frontier AI labs, critical infrastructure operators, governments, and enterprises running AI in high-stakes workflows. The company's solution enables third parties to detect tampering and verify security commitments without relying on trusted hardware or operators, operating within the Cyber Security sector, specifically focusing on Data Security and Artificial Intelligence.

Strategic signal

In August 2026, Attestable announced a $20 million seed funding round, co-led by Altimeter Capital. This significant early-stage investment validates the market's demand for robust AI integrity solutions and positions Attestable to accelerate the development and deployment of its zero-knowledge proof technology for AI systems. The funding indicates strong investor confidence in the company's approach to securing AI in critical applications, signaling potential for rapid growth and impact in the cyber security and AI sectors.

Company Intelligence Q&A

When was Attestable founded?

Attestable was founded in July 2025 by Yogev Bar-On, Shahar Papini, and Shahar Samocha.

What is Attestable's primary focus?

Attestable focuses on building a software-only integrity layer for AI systems, using zero-knowledge proofs to verify AI outputs without revealing sensitive model or input data.

What was Attestable's most recent funding activity?

In August 2026, Attestable secured a seed funding round totaling $20 million. The round was co-led by Altimeter Capital and TLV Partners.

Who are the co-founders of Attestable?

Attestable was co-founded by Yogev Bar-On, Shahar Papini, and Shahar Samocha.

What problem does Attestable's technology address?

Attestable's technology addresses the need for verifying the authenticity and integrity of AI system outputs, enabling third parties to detect tampering and verify security commitments without relying on trusted hardware or operators.