Every number has a source.

Link an Excel figure to its source document, page and amount. Open the evidence from the cell, record your review and hand over a working paper others can follow.

Create your account Explore evidence tracing

Explore a working-paper review

Select an amount to inspect its source

Invoice register.xlsxWorking paper B–04

Evidence review

Working paperInvoice register

	A	B	C	D

Illustrative values. Select any amount.

The worksheet values never change during this walkthrough.

Source evidence

Invoice source documentPDF

Evidence recordAttached to the selected figure

Excel cell
Document
Source location
Fingerprint
Review state

Built for accountants, finance teams and auditors.Interactive illustration, not a live Excel session.

Evidence you can follow.

Keep the source and review history attached to the figure, so the next reviewer can check your work.

Find the origin, not just the amount.

Open the exact source document, page and highlighted region directly from the cell.

Know you're looking at the same file.

Document fingerprints distinguish an original source from another file with a similar name.

Catch changes before sign-off.

Changed cell values and unresolved evidence exceptions require attention instead of silent approval.

Give every decision its context.

Review outcomes, queries and tickmarks stay with the workpaper that needs them.

Your first evidence link.

Install LulaProof in Excel, then follow these three steps.

Bring in the evidence.

Open documents beside the working paper. Extract text from supported files, with OCR where enabled.

Connect it to a cell.

Select a number and its source. Keep Excel formulas and values intact.

Review with a record.

Verify, flag or raise a query. Human reviewers make the decisions.

Supported review marks

AGAgreed

RCRecalculated

EXException

QQuery

FLFlagged

You control what gets verified.

Extraction helps find values. Reviewers check the source and decide whether to accept them.

Consent before AI extraction

AI-assisted extraction requires explicit consent. Suggested results are not accepted as verified evidence.

Source-checked suggestions

Proposed values must be supported by the cited document text. Unsupported claims are rejected.

Evidence integrity

Missing anchors, changed amounts and ambiguous links cannot be quietly marked as verified.

Independent sign-off

Review safeguards distinguish preparers from approvers and enforce evidence locks in database workflows.

LulaProof is in pre-release user testing. Use synthetic records until your organisation has completed its own security and data-handling approval.

Start with one working paper.

Create your account, install LulaProof in Excel and link your first source document.

Create your account