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Timevolt / Before-and-after weigh/measurement records
before-and-after measurement checklist

Keep the readings and the files behind them.

Before-and-after measurement checklist — Keep the readings and the files behind them. Save each recorded measurement, its source record and relevant images.

Try a file locally

Your photos and files stay on your device, so keep them.

EXAMPLE
Before-and-after weigh/measurement records
1 Nov 2026
Authority time: 14:02 UTC · example
Bitcoin block time: 14:10 UTC · example
Last checked: 15:02 UTC · example
✓ Dated◆ Permanent
Now keep it safe: three things
  1. Keep your photos and files unedited. The receipt only matches the originals. Put them in an album such as “My records”.
  2. Save this receipt to your camera roll.

    Keep the receipt file too. The image is a handy copy; checking needs the file.

  3. Email it to yourself.Email it to myself

    Your mail app opens a draft. Attach your receipt image and receipt file. Don’t attach your photos or documents. Timevolt does not send it or know whether it was sent.

Your record, one step at a time.

Your photos and files stay on your device, so keep them.

Local preview: files are fingerprinted here. Notes and progress stay in this browser. Keep downloaded copies; browser storage is not a backup.

0 items
How?

Add the exact original files for this part of the record. Keep them unchanged; a different export or edit has a different fingerprint.

Add link and screenshots

The link is recorded, not fetched or verified.

    0 items
    How?

    Record the date, time, place and who you spoke to. New notes are saved separately rather than editing an old note.

    How to keep notes that hold up
    Write it down

    By making a receipt you agree to the Terms and Privacy Policy. The Bitcoin record is permanent.

      By making a receipt you agree to the Terms and Privacy Policy. The Bitcoin record is permanent.

      How to keep notes that hold up

      Write notes as soon as you can. Keep the original account rather than replacing it later; the venue decides what weight it gets.

      1. Write it down straight away, on paper or in the box on a step.
      2. Put the date, time and place at the top, and who you spoke to.
      3. Use their words where you can; separate what you saw from what you were told.
      4. Sign or initial a paper note, photograph it and add the photo.
      5. Never edit an old note. Add a new dated entry when something changes. A device save time is not independent time evidence or proof of event order.
      Before-and-after weigh/measurement records
      Before-and-after weigh/measurement records

      01 · Keep the exact files

      Save each recorded measurement, its source record and relevant images.

      Records to keep: Balance/scale exports and batch sheets

      Before-and-after weigh/measurement records

      02 · Date the file’s code

      Your device fingerprints the selected file or manifest. Dated follows an independent timestamp; Permanent follows Bitcoin anchoring.

      An independent time, tied to the exact bytes.

      Before-and-after weigh/measurement records

      03 · Keep the evidence

      Keep calibration and review records in the source system. Date the exact exports separately.

      Keep the originals too. A changed or compressed copy has a different fingerprint.

      Try a file. It stays here.

      Make a test receipt on this device.

      By making a receipt you agree to the Terms and Privacy Policy. The Bitcoin record is permanent.

      or drop a file here

      Real cases: why the saved copy matters.

      Real cases where dated records mattered. We don’t claim a time receipt would have changed the result.

      Punjab and Haryana, India · 2009

      Keep both weight readings and their basis

      A steel shipper faced extra charges after a later weight check clashed with the first reading. The wagon records did not match. The court ordered a fresh check at the shipper’s cost; extra charges would depend on the result.

      Commercial rail shipment under Indian railway law; the order did not decide the final correct weight or cancel all charges.

      Summarized on Oct 29, 2026

      Read the source ›

      Related cases

      US · 2024

      Do not write batch records after the fact

      Related: drug batch production records

      Drug-firm leaders admitted that batch records were made later for inspectors. The FDA found the reply too weak to show how such gaps would be caught. Its warning letter questioned whether the rebuilt records could be trusted.

      Regulator's warning letter; it reports admitted late record-making and concerns about the reconstructed records.

      Summarized on Oct 29, 2026

      Read the letter ›
      US · 2015

      Late spreadsheet entries need their real dates

      Related: drug production spreadsheets

      A report says a drug firm entered test data later and gave it old production dates. The FDA called that wrong and said the firm had not shown how widespread it was. It also questioned whether old data could be trusted.

      The linked source reports on a warning letter; the letter itself was not independently reviewed.

      Summarized on Oct 29, 2026

      Read the report ›
      US · 2016

      Keep original pages when tests are repeated

      Related: drug batch pages and test dates

      A drug plant threw away its first batch pages and put old dates on the new ones. A clock was also changed before tests ran again. The food watchdog set out these findings in a warning letter.

      Secondary blog report of an FDA warning letter; no later enforcement outcome supplied.

      Summarized on Oct 29, 2026

      Read the report ›

      What courts, schemes and regulators say.

      Positions below refer to the cited rule or record type, not endorsement of Timevolt. This service is not represented as an eIDAS qualified timestamp provider. A non-qualified timestamp does not receive the qualified timestamp presumption.

      Needs something else · US (FDA)

      FDA guidance, Data Integrity and Compliance With Drug CGMP Q&A, question 12

      Data must be saved at the time of performance; processes should be designed so data cannot be modified without a record of the modification. Recording data on pieces of paper that are discarded after transcription to a permanent notebook is not acceptable, nor is storing electronic records so they can be manipulated without creating a permanent record.

      Expects controlled systems, audit trails and procedures. An external timestamp is not named. A time receipt could support, not replace, these. Applies to drug makers.

      Source summary as of 2026-10-28. Check the current source and applicable local rules.

      Read the source
      Unclear · US (FDA)

      FDA guidance Data Integrity and Compliance With Drug CGMP Q&A, question 1.a (ALCOA) and question 9 (electronic copies as true copies)

      Data should be attributable, legible, contemporaneously recorded, original or a true copy, and accurate (ALCOA). Electronic copies can serve as true copies if they preserve the content and meaning of the original record, including all metadata.

      A time receipt supports the existence time of the saved file. It does not by itself establish that the measurement was recorded contemporaneously with performance. It does not cover attributable or accurate.

      Source summary as of 2026-10-28. Check the current source and applicable local rules.

      Read the source

      Other ways to do this

      Prices change. Check each provider’s site for current prices and service details.

      • NI FlexLogger

        Configures sensors and records synchronized measurements.

        Visit site

      • Mitti weight check record

        Records sample weights, batch details and measurement times.

        Visit site

      Related workflows.

      Quarterly user access review: the reviewer list, decisions and removals frozen as submittedAccess or license request, manager approval and grantQuarterly user access review: the list shown to the reviewer, each keep/remove decision and proof removals happenedHuman-in-the-loop approval before an AI agent executes a high-impact action (refund, payment instruction, production change, customer message)Who was physically present at a members' or condo board meetingHuman-made process record

      Proves / Doesn’t prove

      Proves

      A completed time receipt shows that the exact selected file existed by the independently witnessed time. You can check whether a later copy has the same bytes. It does not establish creation time, authorship, identity, event order, location or the truth of the contents.

      Doesn’t prove

      It does not prove who took the reading, that the balance was calibrated or the number is true, or that a regulator will treat it as a GMP batch record.

      This cannot establish a true reading, calibrated equipment, correct process or accepted batch record.

      These are the bounds of a completed proof. The local tester does not establish any time. The chosen court, scheme or regulator decides what to accept.

      Questions, answered plainly.

      Your file stays on your device. During normal receipt creation, your device sends a randomized code made from its fingerprint, plus encrypted recovery data. It doesn't send the plain fingerprint or the random value that opens the code. Keep the original file and the complete receipt for checking. Privacy Policy.

      Does a time receipt replace my batch record or lab notebook?

      No. Keep your normal controlled record. The receipt shows that the exact files, such as a balance export or a signed scan, existed by a date.

      Source summary as of October 30, 2026. Check the current source and its scope.

      Context for this answer
      What does FDA expect about when measurements are recorded?

      FDA's data integrity guidance says data should be documented at the time of performance, and handwritten notes should not be discarded after transcription.

      Source summary as of October 30, 2026. Check the current source and its scope.

      Context for this answer
      What must a batch record include about weights?

      For drug products, 21 CFR 211.188 requires the weights and measures of components used, along with dates, equipment and who performed and checked each step.

      Source summary as of October 30, 2026. Check the current source and its scope.

      Context for this answer
      Can I date a before reading and an after reading separately?

      Yes. Get a receipt when each file is saved. Each date establishes a latest possible existence time for that exact file. Two receipt dates alone do not establish which reading was taken or created first.

      Do you see my balance data?

      Your file stays on your device. During normal receipt creation, your device sends a randomized code made from its fingerprint, plus encrypted recovery data. It doesn't send the plain fingerprint or the random value that opens the code. Keep the original file and the complete receipt for checking.

      What happens if someone says the numbers were backdated?

      FDA has cited firms for backdating and for records prepared afterwards. A receipt gives an outside date for the exact file, which a firm cannot change by editing its own clock.

      Source summary as of October 30, 2026. Check the current source and its scope.

      Context for this answer
      If I edit the spreadsheet later, is the receipt still good?

      The receipt covers the exact original bytes only. An edited file has a different fingerprint and needs a new receipt, so save and date each version.

      Will an inspector or auditor accept it?

      That is their decision. Use it as supporting evidence next to your controlled records, calibration logs and signatures.

      Source summary as of October 30, 2026. Check the current source and its scope.

      Context for this answer

      The file tester runs on your device. It does not issue a timestamp or take a payment.

      Keep the records you already have.

      Keep your original files and any existing official records while the receipt service is being prepared.