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Timevolt / Feature-flag or configuration change in production with approver, diff and reason
Change management

Feature flag change log with an independently dated export.

Feature flag change log with an independently dated export. Keep your original source records together, then date the exact files. It does not prove identity, authorship, truth, location, consent, sending, delivery, approval, ownership, compliance, acceptance or who wins.

Try a file locally

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

EXAMPLE
Feature-flag or configuration change in production with approver, diff and reason
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.
      Feature-flag or configuration change in production with approver, diff and reason
      Feature-flag or configuration change in production with approver, diff and reason

      01 · Keep the exact files

      Keep the original files for feature-flag or configuration change in production with approver, diff and reason. Include any existing photos, signed records and source-system exports.

      Records to keep: Hash of the diff, change ticket ID and approver identity

      Feature-flag or configuration change in production with approver, diff and reason

      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.

      Feature-flag or configuration change in production with approver, diff and reason

      03 · Keep the evidence

      Keep the original files and complete receipt separately, alongside any existing venue, signature and workflow records.

      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.

      US federal · 2013

      Check every server before reusing a software flag

      A firm reused a flag that switched on old code on a server missed in the rollout. It agreed to a rebuke, a fine, an order to stop breaches and fixes. It did not admit or deny the findings.

      Summarized on Oct 29, 2026

      Read the source ›

      Related cases

      UK · 2014

      Plan for compatibility when undoing an upgrade

      Related: Software compatibility and change controls

      Banks faced service disruption after compatibility trouble when undoing a software upgrade. The watchdog found weak tests, change plans and risk controls. The banks settled, and a final notice imposed a fine.

      Summarized on Oct 29, 2026

      Read the source ›
      UK · 2022

      Report risks when configuration tests are cut

      Related: System migration testing and governance

      A bank cut intended system tests without the proper review and failed to record or raise the risks. The bank agreed to resolve the case. A final notice imposed a fine.

      Summarized on Oct 29, 2026

      Read the source ›

      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 federal guidance; voluntary private use

      NIST SP800-128

      Configuration change control and record/archive sections3.3

      The 2011 guide, updated in 2019, describes analysis, approval, testing, implementation, verification and supporting archives. A receipt is not this control process.

      Source summary as of 2026-10-29. Check the current source and applicable local rules.

      Read the source
      Needs something else · US federal; covered broker-dealers

      Market access rule, Cornell reproduction

      17 CFR 240.15c3-5(b),(e)

      Requires documented maintained controls, preserved supervisory procedures and review/certification for covered market access. Not a general software or SOC2 rule; official eCFR route failed.

      Source summary as of 2026-10-29. Check the current source and applicable local rules.

      Read the source
      Needs something else · Ireland financial supervisory assessment

      Central Bank of Ireland

      June 2026ICTself-assessment items22.1–22.2

      Official tool describes controlled documented ICT changes, approval independence, fallback and post-emergency review. It cites DORA/RTS but is not the consolidated EU law; timestamp cannot substitute for those controls.

      Source summary as of 2026-10-29. 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.

      • LaunchDarkly

        Provides feature management and runtime control source system.

        Visit site

      • Unleash

        Provides Self-hosted or cloud flags with source-system audit functions.

        Visit site

      • Flipper Cloud

        Provides flag management with plan-specific audit history.

        Visit site

      Related workflows.

      Emergency break-glass access grant and its post-use reviewQuarterly 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 meeting

      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 identity, authorship, truth, location, consent, sending, delivery, approval, ownership, compliance, acceptance or who wins.

      It does not prove identity, authorship, truth, location, consent, sending, delivery, approval, ownership, compliance, acceptance or who wins.

      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 receipt approve a production change?

      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.

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

      Context for this answer
      Can I discard the source-system audit log?

      The guide calls for supporting records and historical configurations. Keep the authoritative log and dated export separately.

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

      Context for this answer
      Do flag tools already keep history?

      Flipper documents paid-plan audit history, complete flag state and rollback; retention depends on the plan.

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

      Context for this answer
      Did the trading case involve a broken written review rule?

      No. The order says a second technician did not review the deployment and no written procedure required that review.

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

      Context for this answer
      Does the market access rule apply to every app?

      No. The cited rule has a defined broker-dealer market-access scope.

      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.