Why U-STAMP®

The same legal protections as a physical Medallion Signature Guarantee — built for the speed, security, and compliance demands of modern financial services.

The Medallion Signature Guarantee, Reimagined

Traditional Medallion Signature Guarantees serve an essential role in securities transfer. U-STAMP® preserves every legal protection while adding the capabilities financial institutions need today.

Sign from Anywhere, Instantly

Remote signing eliminates branch visits and courier delays. A guarantee that once took weeks now takes minutes, signed from any device, anywhere in the world.

  • Eliminates the need for in-person branch visits
  • Works on desktop, browser, or via API integration
  • Signing in minutes, not days or weeks
  • No physical stamps, no couriers, no paperwork

Fraud Stops Before It Starts

Cryptographic digital signatures make document manipulation instantly detectable, permanently, by anyone, at any time. Fraud prevention is built into the document itself.

  • Cryptographic PDF signatures using GlobalSign certificates
  • Field-flattened PDFs make post-signature tampering immediately evident
  • Any modification to the signed document is immediately detectable
  • Document certification restricts unauthorized edits

Complete Audit Trail, Always

Every transaction is automatically logged with timestamp, user identity, document fingerprint, and certificate validation data. Regulatory examinations become straightforward.

  • Every transaction logged automatically, no manual recordkeeping
  • Timestamp, user identity, and document fingerprint per signature
  • Compliance reports generated on demand for regulatory exams

Over Three Decades of Medallion Expertise

Kemark Financial Services pioneered the STAMP program in 1992. U-STAMP® is the fourth recognized Medallion Signature Guarantee program, unanimously endorsed by the Securities Transfer Association Board of Directors.

  • Built by the team that created STAMP in 1992
  • Trusted by financial institutions nationwide for over three decades
  • SEC Rule 17Ad-15 and UCC compliant
  • Fully compatible with existing STAMP, SEMP, and MSP programs

Securities and Commercial Transactions

U-STAMP® covers all transfer types — not just securities. Guarantors provide the same UCC signature guarantee warranties whether the transaction involves a securities transfer or a commercial (non-securities) transaction. One program handles both.

  • Applies to securities transfers and commercial transactions alike
  • Same UCC warranties regardless of transaction type
  • No separate program or process needed for non-securities work

Why the Industry Needs Digital Guarantees Now

The U-STAMP® digital Medallion Signature Guarantee is built for today's securities workflows.

U-STAMP® (Digital)

  • Sign remotely from any device
  • Cryptographic tamper-evidence built into the PDF
  • Automatic, immutable audit trail
  • Minutes, not days — available anytime
  • Cryptographic signature is computationally infeasible to forge

Regulatory Standing

U-STAMP® carries full regulatory credentials from the bodies that matter most to financial institutions.

4th Recognized Program

Unanimously endorsed by the Securities Transfer Association Board of Directors — the fourth recognized Medallion Signature Guarantee program in history.

SEC Rule 17Ad-15

Fully compliant with the SEC's transfer agent requirements for Medallion Signature Guarantees.

UCC & E-SIGN

Maintains the same warranties under the Uniform Commercial Code and complies with UETA and the E-SIGN Act.

Ready to make the switch?

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