Proof

proof.com/

Proof is an identity verification platform that binds a verified identity to high-stakes authorizations — document signings, account access, financial transactions, and now AI agent actions — used in contexts like real estate closings and account openings. Its headline, "Verify once. Authorize everything," is organized around three explicit use-case categories: "Everything you sign," "Everything you do online," and "Everything an agent does for you." That last category centers on a self-described "x401 standard," positioned as letting AI agents conduct commerce while cryptographically proving human authorization — a forward-looking claim distinct from its otherwise conventional notarization and identity-verification business, which it backs with a $200B+-secured-annually figure and SOC 2, IAL2, and WebTrust credentials.

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Security

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Meta title

Proof | Identity-centric security platform

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7

Updated

Sep 22, 2026