Signed baseball inside an acrylic display case

AI Autograph Authentication

Buying a signed item? Check the autograph before you spend hundreds.

Get an independent digital authenticity assessment in as little as 48 hours, without mailing the item anywhere.

Check This Autograph See How It Works

4.8/5 from collectors · 4,000+ signatures analysed

“Saved me from buying a fake Messi jersey.” — Verified Collector

Global Reach

20+ countries

Used by collectors worldwide

Analysis Volume

4,000+ autographs

Reviewed across sports, music, film, and memorabilia

Collector Feedback

Trusted by buyers

“Fast, clear, and helped me bid with confidence.”

Collectors submit listings from marketplaces and auction houses including:

What are you trying to check?

Buying a signed item

Found something online? Send us the listing before you commit.

Start Rapid Review

Already own it

Upload clear photos for a deeper authenticity assessment.

Start Pre-Authentication

Selling memorabilia

Get an independent assessment that can help buyers understand your item better.

Start Pre-Authentication

Check an autograph before you buy in 3 simple steps

Upload, analyze, and receive a clear authenticity result without mailing your item.

Average analysis time: under 48 hours

Send the autograph

Submit clear images of the autograph, or use Rapid Review with a public auction/listing link.

We analyse the signature

Our AI-powered system evaluates signature characteristics against verified reference data and flags consistencies or concerns.

Receive your result

Get a clear result such as Likely Genuine or Not Likely Genuine, plus a shareable certificate card.

A small check before a big purchase

Signed memorabilia can carry real risk. An independent check is easy to justify next to what you might spend.

$300 signed jersey

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$10 Rapid Review

$800 signed photo

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$10 Rapid Review

Higher-value owned item

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$20 Pre-Authentication

Choose the right check for your situation

Choose the service that matches how you want to submit your item.

Before you buy

RapidReview

$10

Best for pre-purchase checks. Submit a public auction or listing link and receive a fast AI-based review before you buy.

What you submit:

A public auction or marketplace link.

What you get:

Analysis results in as little as 48 hours
Clear authenticity assessment: Likely Genuine or Not Likely Genuine
Rapid Review statement valid for 30 days
Powered by our most advanced AI authentication model
Compatible with any auction house

Already own it / deeper review

See what you receive

Sample Signatrue Pre-Authentication certificate

Every review returns a clear result — Likely Genuine or Not Likely Genuine — so you know where the autograph stands.

Pre-Authentication additionally includes a permanent, downloadable certificate you can keep or share with a buyer or seller.

A few quick answers before you decide

Do I need to mail my item?

No. Rapid Review works from a listing link, and Pre-Authentication works from photos you upload.

Can I submit an eBay or auction listing?

Yes — Rapid Review is designed for this: paste the public listing link before you buy.

What result will I receive?

A clear Likely Genuine or Not Likely Genuine assessment. Pre-Authentication also includes a permanent certificate.

Is this the same as full physical authentication?

No. Full physical authentication is a separate, partner-handled service, currently marked Soon.

Frequently Asked Questions

What is AI autograph authentication?

AI autograph authentication (also known as AI signature authentication) uses pattern recognition to analyze handwriting and signature characteristics. The system compares signatures against verified reference data to identify consistencies or potential concerns related to authenticity.

Can AI verify a signature's authenticity?

AI can assist in assessing signature authenticity by identifying patterns, inconsistencies, and visual features within an autograph. While no authentication method is 100% conclusive, AI-based analysis provides consistent and objective insights to support collectors and buyers.

How accurate is Signatrue's AI autograph analysis?

Signatrue's AI autograph analysis is designed to deliver consistent and repeatable results based on signature pattern comparison. Each review provides a clear outcome such as “Likely Genuine” or “Not Genuine” to help users make informed decisions.

What is the difference between Rapid Review and Pre-Authentication?

Rapid Review is based on submitting a public auction or marketplace link and is intended for quick pre-purchase checks. Pre-Authentication requires uploading photos of the autograph and provides a deeper analysis with a permanent certificate.

Not sure about a signed item?
Check it before you commit.

Results in as little as 48 hours. No shipping required. Starting from $10.

Check This Autograph