Data Integrity & Tamper Evidence

A document that has been altered is worse than a document that is missing, because it looks trustworthy. For regulated enterprises handling invoices, claims, and identity documents, integrity has two halves: proving a file was genuine when it arrived, and proving no value was changed after Staple processed it. Staple covers both.

Tamper Checks Before Extraction

Before a single field is read, Staple runs document tampering detection on the file. Three signals are combined: file metadata such as creation date, modification history, and software origin; text-layout inconsistency; and pixel and image anomaly analysis.

The result is a tamper confidence score and a classification of genuine, suspicious, or fraudulent, with the thresholds configurable per queue. The evidence behind the score is shown to the reviewer in plain terms, so a flagged document arrives with an explanation rather than a bare verdict.

Sealing Values After Extraction

Once a value is captured, Staple applies field-level sealing. A change made after extraction is immediately visible, recorded in the per-field audit trail with the before-and-after value and the reviewer who made it. Integrity is not a one-time gate at ingestion, it is maintained across the life of the record.

Proof That Travels With The Data

For data that leaves Staple, integrity is carried by Metastructured Data: a cryptographically signed record attached to the value itself. If any figure is altered downstream, in transit, in storage, or inside an ERP, the signature breaks and the change is detectable by the next reader without calling Staple. See the technical detail on the data verification page.

Where Integrity Meets Reconciliation

Integrity checks feed the business rules and anomaly detection engine and cross-source reconciliation, so a suspicious document, a total that does not add up, and a line item that fails a three-way match are all surfaced in one reviewer view rather than three disconnected alerts.

What This Does Not Do

Staple detects and evidences tampering and change. It does not certify a document as legally authentic on your behalf, and it does not overwrite a suspicious file. It gives your team the evidence to make that call and the record to defend it.

Evidence

Global security and cash management company

A global security and cash management company operating in more than 50 countries processes high volumes of invoices and tax documents where a single altered figure carries real financial exposure. Staple screened documents for tampering before extraction and matched values three ways before release.

50+ countries protected by pre-extraction integrity checks

Related Capabilities

• Explainable Verification

• Document Tampering Detection

• Privacy and Redaction

Test Integrity On A Tampered Document

Send us a genuine file and an altered copy. We will show you the tamper score, the evidence, and how the change is surfaced.

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