About this app
MintMark SI™ gives collectors, investors, dealers, and precious metal owners a simple way to verify SMI products using a standard smartphone camera. Locate the MintMark SI™ circle in the center of your product, scan it with the app, and confirm authenticity in seconds. Built in collaboration with Graphic Security Systems Corporation, an advanced authentication technology company with decades of experience developing hidden-image security features for governments and high-security applications worldwide. Scan to Reveal “VALID” for Authentication Quickly confirm authenticity from your smartphone. Anti-Counterfeit Protection & Hidden-Image Security Helps protect against fake coins, rounds, and bullion bars. Designed with GSSC technology that cannot be easily duplicated or reproduced. No Special Equipment Authenticate using a standard smartphone camera. Supports eligible Sunshine Minting coins, rounds, and bullion bars. Fast and Simple Locate the MintMark SI™ circle, scan, and verify Eligible Sunshine Minting Products Supported by MintMark SI™ Gold Products, Au Gold Bars 1g Gold Bar 2g Gold Bar 2.5g Gold Bar 5g Gold Bar 10g Gold Bar 20g Gold Bar 100g Gold Bar 1/2 oz Gold Bar 1 oz Gold Bar 5 oz Gold Bar Gold Rounds 1/20 oz Gold Round 1/10 oz Gold Round 1/4 oz Gold Round 1/2 oz Gold Round 1 oz Gold Round Silver Products, Ag Silver Bars 1/2 oz Silver Bar 1 oz Silver Bar 5 oz Silver Bar 10 oz Silver Bar 1 Kilo Silver Bar 50 oz Silver Bar 100 oz Silver Bar Silver Rounds 1/2 oz Silver Round 1 oz Eagle Silver Round 1 oz Sunshine Silver Round 1 oz Liberty Silver Round 1 oz Buffalo Silver Round 2 oz Sunshine Silver Round 5 oz Silver Round 10 oz Silver Round
Latest release
What’s New
• Improved camera focus for faster and more reliable scanning. • Enhanced scan-angle performance to help capture the MintMark SI™ circle more easily. • Expanded capture capabilities for different product sizes, finishes, and surfaces. • Improved detection of the hidden-image authentication feature. • Faster scan response when revealing “VALID.” • Better performance in varying lighting conditions. • Smoother authentication experience for supported SMI products. • Expanded support for additional SMI gold and silver products, including bar and round sizes. • General app performance improvements and bug fixes.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 20, 2026 · 3:40 AM Free
Screenshots
