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Preview of TCVS Extension

TCVS Extension by TTCU Technologies

Enables secure CORS-compliant communication between Corelation Keystone credit union systems and U.S. Treasury Check Verification

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About this extension
Enables secure CORS-compliant communication between Corelation Keystone credit union systems and U.S. Treasury Check Verification Service. Seamlessly verify checks against the Treasury database without CORS restrictions. Essential for credit unions.

Overview

The TCVS Extension provides a secure bridge between credit union web applications and the U.S. Treasury's Check Verification Service (TCVS) API. By intelligently managing CORS headers, this extension enables Corelation Keystone systems to verify check information in real-time against the official Treasury database.

Requirements
  • Firefox browser (Desktop or Android)
  • Valid TCVS API subscription from U.S. Treasury
  • Corelation Keystone or compatible credit union system
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Permissions and dataLearn more

Required permissions:

  • Access browser tabs
  • Access your data for all websites

Optional permissions:

  • Access your data for all websites
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Version
2.4.0
Size
1.37 MB
Last updated
a month ago (Jul 10, 2025)
Related Categories
  • Web Development
  • Privacy & Security
License
MIT License
Version History
  • See all versions
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Release notes for 2.4.0
Version 2.4.0 Changes:
- Updated extension description to "Enables secure CORS-compliant communication between Corelation Keystone credit union systems and U.S. Treasury Check Verification"
- Removed unused activeTab permission from manifest
- Updated all documentation for clarity and accuracy
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