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Digital Transformation for Medallion Signature Guarantees

SEC Rule 17Ad-15 Compliant
STA Unanimously Endorsed
4th Recognized Medallion Program

See U-STAMP® in Action

Watch our overview video to see how digital Medallion Signature Guarantees work.

The Medallion Signature Guarantee, Reimagined

U-STAMP® delivers the same legal protections as a physical Medallion Signature Guarantee, with the speed, security, and auditability that modern financial services demand.

Facilitate Transactions Remotely

Remote signing eliminates branch visits and courier delays. A guarantee that once took weeks now takes minutes.

Fraud Stops Before It Starts

Cryptographic signatures and tamper-evident PDFs make document manipulation instantly detectable by anyone, anytime, for the long term.

Complete Audit Trail, Always

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

Over Three Decades of Medallion Expertise

Kemark Financial Services pioneered STAMP in 1992. U-STAMP® is the fourth recognized program, unanimously endorsed by the Securities Transfer Association.

Securities and Commercial Transactions

U-STAMP® covers all transfer types. The same UCC signature guarantee warranties apply whether the transaction involves a securities transfer or a commercial transaction; one program handles both.

See Full Value Analysis →
Financial professional using U-STAMP digital guarantee platform

Built for the Institutions That Move Securities

U-STAMP® was designed with the unique compliance and workflow needs of financial institutions in mind.

Banks

Issue Medallion Signature Guarantees digitally. Serve customers remotely without a branch visit.
Credit Unions

Offer Medallion services as a member benefit — no physical stamp or branch visit required.
Broker-Dealers

Process securities transfers faster with digital audit trails that simplify compliance examinations.
Financial Advisors

Help clients transfer securities without scheduling in-person appointments at a financial institution.
Transfer Agents

Automate Medallion workflows at scale. REST API integrates with existing processing systems.
Mutual Fund Companies

Handle shareholder transaction guarantees digitally with full audit logging and long-term signature validity (LTV).
Attorneys

Become a Medallion Signature Guarantor. Issue digital guarantees for estate and trust securities transfers remotely.
Learn More About Who We Serve →

One Platform, Five Components

Choose the components that fit your institution — or use all five.

Desktop Client

Universal STAMP® App

For high-volume users who need power and speed. Native Windows application for institutional guarantors.

  • Batch document processing
  • Offline signing with auto-sync
  • Direct PDF import and export
  • Auto-save functionality
Learn more
Browser Client

Local Web Server (LWS)

Works in any modern browser. No client software to install — Windows, Mac, or Linux.

  • No client software to install
  • Real-time transaction status
  • Mobile-friendly responsive design
  • Role-based access control
Learn more
Integration & Automation

API

For system-to-system integration. Automate Medallion workflows end-to-end.

  • Auto Stamping: hands-free document signing
  • Auto Verification: automatic signature validation
  • Webhook notifications for downstream systems
  • Full JSON REST API documentation
Learn more
Administration

WebHub

Full administrative control over your U-STAMP® account. Manage users, stamps, reports, and account settings.

  • User & role management
  • Stamp configuration
  • Usage reports & statistics
  • Account & subscription settings
Learn more
Automated Validation

Validation Server

For high-volume transfer agents. Automatically validates incoming U-STAMP® documents without manual intervention.

  • Automated folder monitoring
  • HTTP endpoint for document uploads
  • Configurable processing pipelines
  • Full audit trail per transaction
Learn more
Explore the Full Suite →

The Benefits of Going Digital

When increasing productivity and security are your values, Universal STAMP® stands with you.

Icon representing paper-to-digital document conversion
Paper-to-digital document conversion
Icon representing faster Medallion Signature Guarantees
Faster Medallion Signature Guarantees
Icon representing cost savings through reduced paper usage
Cost savings through reduced paper usage
Icon representing improved efficiency for remote workers and customers
Improved efficiency for remote workers and customers
Icon representing enhanced fraud prevention
Enhanced fraud prevention
Icon representing tamper-evident document security
Tamper-evident document security

Ready to transform your Medallion process?

Contact Us