Authentication • Verification • Patent-Pending Identity Technology

The Standard for
Instrument Authenticity.

ToneProof creates a verifiable identity record using natural wood-grain patterns where visible, and precise structural landmarks where they're not — including painted, finished, and veneer surfaces.

A secure identity for every stringed instrument.

Check Registry How Verification Works
Secure & Private
Patent-Pending Technology
Provenance You Can Trust
For Every Player
Public registry lookup is available to all users. Registry Enrollment and Verification Service sessions require sign-in.

ToneProof registry records are designed to support provenance, resale, and insurance documentation.

Two premium acoustic guitars shown side by side to represent verified identity and unconfirmed identity
What You Get

What ToneProof Does For You

One identity record, captured once, that protects your instrument for as long as you own it — and helps anyone verify it after that.

One Verifiable Identity

Captured from natural wood-grain patterns where visible, or precise structural landmarks where they're not — including painted, finished, and veneer instruments.

Verified With Just a Phone

That same record can be used to authenticate the instrument later — no special equipment, just a mobile device.

Covered If It's Sold, Lost, or Stolen

Anyone can check the registry for free with a mobile device — Make, Model, Lost/Stolen status, and the instrument's full record history for provenance and insurance documentation.

Not a Sticker. Not a Serial Number.

Serial numbers and stickers can be modified or swapped. ToneProof captures the instrument's own unique identity instead.

Think of it as your instrument's fingerprint — stored securely in the ToneProof Registry.

Check Registry

Check whether an instrument already has a ToneProof registry record. Enter a Seal Code or, if signed in, compare an instrument identity photo against the registry.

Check Registry

Registry Enrollment

Create a secure ToneProof registry record with instrument identity details, archive images, condition notes, and optional wood-grain signature capture when visible.

Start Registry Enrollment

Verification Service

Book a guided ToneProof Verification Service session to strengthen registry confidence, document condition, review identity details, and support resale or insurance documentation.

Learn About Verification

When visible, wood-grain signatures can be captured during Registry Enrollment or a Verification Service session to support future registry checks.

Check the Registry, Instantly

Enter a Seal Code to check for a registry record and open the full instrument details — no account required for a public lookup.

toneproof.ai/verify.html
Public Registry · Seal Lookup

Check Registry

Start with a ToneProof Seal Code to check for an existing registry record.

Seal code
Enter seal code
Martin D-28
Martin D-28 Dreadnought
4821-9412-7714-2206
✓ Match
Public-Registry Record

Martin D-28 Dreadnought

✓ Registry Match

Instrument details

Make
Martin
Model
D-28
Year
2018
Body Style
Dreadnought

Surface identity summary

✓ Wood-grain identity signature on file
ToneProof Seal
4821-9412
7714-2206
Martin D-28 primary registry photo
Close-up of a guitar top where natural wood grain gradually resolves into a connected network of geometric landmark points, representing ToneProof's two identity-capture methods

Wood grain or structural landmarks — either way, ToneProof creates one verifiable identity for your instrument.

How Instruments Get Enrolled

Every registry record starts one of two ways — through a ToneProof partner, or independently by the owner.

Enrolled by a ToneProof Partner

Origin Records

Newly built instruments, added by partnering manufacturers and luthiers before they're sold — think of it as the instrument's birth record.

Partner Verified Records

Used instruments enrolled after verification by a partnering luthier or music store.

Details

Tied to the partnering luthier or music store for lifelong accountability, giving future buyers a documented, professionally-verified history.

Enrolled Independently

Documented Record

Self-enrolled by the owner, with no ToneProof professional involved — a fast way to document an instrument's condition now.

Details

Great for musicians who want their instrument on record right away without scheduling a session — a starting point that can later be upgraded to a Partner Verified or Verified Record.

Verified Record

Enrolled during a live virtual session with a ToneProof professional — a neutral third party.

Details

Hardware and electrical components, wear and tear, noted repairs, and any damage are checked and photographed for an added layer of trust. Commonly used for insurance verification and resale.

See Enrollment Capture in Action

A guided capture step during Registry Enrollment or a Verification Service session — align, capture, and the instrument's registry record is ready.

Tablet showing ToneProof capture guide: Step 1 of 2, Align Front
Analyzing surface identity…
✓
Identity Signature Captured
Front (lower bout) · wood-grain match
✓ Registry Match
Martin D-28
Martin D-28 Dreadnought
4821-9412-7714-2206
MakeMartin
ModelD-28
Year2018
Body StyleDreadnought
✓ Wood-grain identity signature on file
Instrument Lifecycle • Secure Registry • Patent-Pending Identification

The Instrument Lifecycle

ToneProof was designed to support the long-term identity lifecycle of wooden musical instruments — from manufacturer or builder origin records, to musician and collector verification, resale, documentation, and future registry checks.

At the center of this lifecycle is ToneProof’s patent-pending surface identity process — using natural wood-grain patterns where visible, or precise structural-landmark positioning where they're not — connecting every instrument to a persistent registry record.

ToneProof instrument lifecycle diagram showing manufacturers, builders, musicians, collectors, music shops, documentation, and the secure registry

How ToneProof Works

Every instrument has a unique surface identity — natural wood-grain patterns where visible, or precise structural landmarks where they're not. ToneProof captures that identity and anchors it to a registry record so the instrument can be identified and verified over time.

Capture Identity

Capture Identity

A clear photo of the instrument’s surface — wood grain or structural landmarks — is captured during Registry Enrollment or a Verification Service session.

Create Identity Signature

Create Identity Signature

ToneProof analyzes the natural grain or structural landmarks and creates a unique signature that represents the instrument’s identity.

Registry Record

Registry Record

The identity signature is stored in the ToneProof registry along with the instrument’s enrollment details.

Future Verification

Future Verification

Years later the same instrument can be verified by comparing new photos against the registry record.