Trust the ink,
verify the data.
A strictly factual database of authenticated exemplars, known forgeries, and structural price history. Built for collectors who require primary sources over opinions.
The anatomy of authentication relies on comparative data.
High-Resolution Exemplar Archive
Our core dataset comprises thousands of verified signatures from historical figures, athletes, and entertainers. Every entry includes specific flow analysis, slant metrics, and pressure points—not just a low-res image.
Browse the Archive →Autopen Pattern Matching
Identify mechanical reproduction with our database of exact autopen matrices used by presidents and astronauts.
Read GuideStructural Price History
Realized auction prices mapped across decades, stripped of buyer's premiums, showing the true market curve.
View DataSignature Slant Evaluator
Calculate the precise degree of slant in a signature to compare against a subject's known baseline matrix.
Select an image to measure baseline divergence.