Know who you’re speaking with.

Know who created the content you’re viewing

SureMark - Built by the Co-Inventors of Blockchain

SureMark was developed by Drs. Stuart Haber and W. Scott Stornetta, the scientists whose early work at Bell Communications Research in blockchain now protects over $3 trillion in digital assets.

W. Scott Stornetta

Stuart Haber

What SureMark Delivers…

Woman on the phone

  • Use your SureMark Credential to securely identify the person you are speaking with

  • Works with any phone or video platform

  • Seamless authentication without shared contact info

  • Authorize all key documents and web content with authentication impervious to AI deepfakes

  • Provide secure commentary to online content - set the record straight wherever you are misrepresented in the media.

A SureMark Credential stops AI-driven fraud at the source—protecting every conversation, across every channel.

W. Scott Stornetta on the Origins of Blockchain and the Future of Trust in Digital Interactions

Verify Any Conversation, Across Any Channel

SureMark protects you, your loved ones, clients, and associates from digital scammers.

Protect yourself. Starts at $10/mo