Show how it was written

Student-owned writing process record. Receipts records editing activity while a student writes. The student can share a private replay and factual record with a teacher. Receipts does not generate an AI score.

See a teacher review Open the writing app For schools and MOE
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The problem

A detector says "AI". The student has nothing to show.

Detectors guess. One study found they wrongly flagged 61% of essays by non-native English writers (Liang et al., Patterns, 2023).

A final draft cannot show how it was written. The student is asked to prove a negative.

Receipts gives them something to show instead: the writing, as it happened.

How it worksThe student writes and shares. The teacher can see the process.

  1. 01 · Student

    Write in Receipts

    Start a draft in the browser editor. No installation is needed.

  2. 02 · Browser

    Record the edits

    Typing, pasting and edits form a record stored in the browser.

  3. 03 · Student

    Share privately

    Preview the record, then send a link or proof file through the teacher's usual route.

  4. 04 · Teacher

    Review the process

    Read the facts, inspect an edit, and ask about a specific moment when needed.

Students choose what to share. Missing or incomplete records never count against them. Google Drive backup is optional.

See a teacher reviewOpen the writing app

What the teacher gets

What a teacher can review.Read the recorded facts, open a moment, and replay the edits.

Typed sample00:00

words in 5 min 24 s, including deletions, pauses and edits to earlier text.

Clipboard sample00:00

695 characters in one clipboard event, followed by a small edit.

Teacher summary

Recorded facts

When it was written

What came from outside the keyboard

How it was revised

It cannot show who typed, what was on another screen, or whether text was retyped from somewhere else. A missing or odd number never counts against the student.

Open a recorded moment in the replay, then ask the student about that specific source or revision.

All record details
    The sample, live

    Watch the sample replay.This constructed example shows how recorded edits appear over time.

    Constructed typing sample00:00 / 05:24
    Constructed example.

    This is a demonstration, not a student's work. Its measurements are calculated from the sample events.

    How it works

    Try a few edits.Type, delete or paste in this box and watch the receipt change.

    This box counts typing, deletions and pastes. It does not save a record.

    Privacy and limits

    Privacy and limits.The student holds the record and chooses when to share it.

    What the service does not do
    Upload writing to our servers
    The app keeps records in the student's browser, with optional backup to their Google Drive. We separately receive site analytics and any billing or support information described in the privacy policy.
    Charge for evidence
    Free for students, forever. Written into the school terms.
    Watch students
    There is no live student monitoring. Teachers review only the records students choose to share.
    What it cannot do
    Say who was at the keyboard
    It shows what the browser saw, not who typed.
    See a second screen
    Another device, or a friend in the room, is invisible to it.
    Identify retyping or off-screen help
    Retyping and device-level automation can resemble ordinary keyboard input. The record cannot establish where the ideas came from.

    Receipts does not generate an AI score. Missing or incomplete evidence stays neutral.

    Receiptsproof Pte. Ltd., Singapore, UEN 202638224N. Full data inventory in the school terms and the privacy policy.

    Run one assignment with one class.Use the private submission route the school already trusts.

    1teacher
    1class
    1assignment
    30days
    $0cost
    Pilot scope

    One teacher, one class, one assignment.

    Students use the live tool voluntarily. The teacher reviews only records students choose to submit.

    School workflow

    Test the existing review route.

    Preflight the managed device, browser, network and private submission route before students begin.

    Start a pilot Book a 15-minute call

    Voluntary. Grade-neutral. Stop any time. Tutors: same free workflow, plus an optional setup service. Details.

    Detector research.Published error rates and universities' decisions about AI detection.

    61%

    average false-positive rate across seven detectors tested on 91 essays by non-native English speakers in a 2023 study. This is not a current accuracy estimate for all detectors.

    Liang et al., Patterns, 2023.

    Under 1%

    was Turnitin's reported document-level false-positive rate in 2023. This vendor estimate is separate from the study beside it.

    Turnitin, 2023.

    750

    wrongly flagged essays was Vanderbilt's illustration of a 1% error rate across 75,000 submissions. It was a calculation, not an observed count.

    Vanderbilt University, August 2023.

    NTUSwitching its AI detector off on 31 December 2026. Called the tools "fundamentally unreliable". Moving to process documentation.CNA, 14 August 2026
    SUSSDisabled Turnitin's AI score on 11 August 2026.CNA, 24 August 2026
    NUSDoes not use one.CNA, 24 August 2026

    These are university decisions. They do not establish MOE policy or imply an endorsement of Receipts.

    More detail

    Research, comparison and plans.

    Detector research

    Published limits, source links and how a process record answers a different question.

    Read the research

    School review

    Pilot safeguards, implementation details, due diligence and rollout pricing.

    For schools and MOE

    Individual plans

    Recording, replay and proof sharing remain free. Optional account features are listed in the app.

    Open Plans in the app

    See the summary, inspect an edit, or read the final document.

    Recording and sharing are free. Teachers can open a shared record without an account.

    See the teacher view Sign in and open the writing app