Check Registry
Use a ToneProof Seal Code to check for an existing registry record. Signed-in members can also run photo-based instrument authentication against the registry.
Results reflect current public registry records and may include documented or verified instruments.
Public Registry Check
If this instrument has a ToneProof Seal Code, enter it below to check for a registry record.
Instrument Authentication
ToneProof uses a patent-pending process to capture visible wood-grain signatures — or precise structural-landmark positioning where grain isn't visible — to authenticate against registry records.
Use either a Seal Code or photos — not both in the same check.
Optional narrowing applies to photo-based instrument authentication and can help reduce false positives.