
TCVS Extension by TTCU Technologies
Enables secure CORS-compliant communication between Corelation Keystone credit union systems and U.S. Treasury Check Verification
You’ll need Firefox to use this extension
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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
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
More information
- Add-on Links
- Version
- 2.4.0
- Size
- 1.37 MB
- Last updated
- 5 days ago (Jul 10, 2025)
- Related Categories
- License
- MIT License
- Version History
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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
- Updated all documentation for clarity and accuracy
- 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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