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Timevolt / Model or dataset release
Software

Preserve a model-release manifest with the exact weight files, configuration and model card it describes.

Preserve a model-release manifest with the exact weight files, configuration and model card it describes. Keep your original source records together, then date the exact files. It does not show which data trained a model, which weights ran in production, who created them, permission to use them, safety or regulatory satisfaction.

Try a file locally

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

EXAMPLE
Model or dataset release
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?

    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.
        Model or dataset release
        Model or dataset release

        01 · Keep the exact files

        Keep the original files for model or dataset release. Include any existing photos, signed records and source-system exports.

        Records to keep: Weights manifest · Model card

        Model or dataset release

        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.

        Model or dataset release

        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

        Related cases

        Related cases from nearby fields. We don’t claim a time receipt would have changed the result.

        US federal · 2021

        Models can carry duties from the data used

        Related: deleting models made from covered face data

        A watchdog said a firm had misused face data. The firm made a deal but did not admit or deny the claims. It had to delete covered data and models made from it, except what the law required it to keep.

        Summarized on Oct 29, 2026

        Read the source ›
        US federal — Northern District of California · 2022

        Data misuse can require models to be deleted

        Related: children's data and derived model deletion

        Officials said a children's app broke rules on parent notices, consent and keeping data. The firms did not admit or deny the claims but agreed to a court deal with a fine and reports. They had to delete covered data and models, except what the law required them to keep.

        Summarized on Oct 29, 2026

        Read the source ›
        US federal — Eastern District of Pennsylvania · 2024

        Keep deletion duties tied to the covered models

        Related: face data and derived model deletion

        A watchdog challenged a shop's face scans and security. The filed deal set a five year face scan limit and required deletion of covered data and models, with proof. The firms made no admissions, and the exact final start date was not clear.

        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 · European Union — in-scope general-purpose AI providers

        European Commission AI Act Service Desk operative Article 53

        Article 53 documentation and information duties, consolidated July 27, 2026 text

        Operative paragraphs1–2 describe model documentation, downstream information, copyright policy and public training-content summary, with a limited open-source documentation exception unavailable for systemic-risk models. No blanket commencement or transition date is claimed; a weights timestamp supplies none of the missing content.

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

        Read the source
        Silent · United States — voluntary AI risk-management guidance

        National Institute of Standards and Technology

        NIST AI 600-1, July 2024, Generative AI Profile

        Suggested actions address model documentation, data provenance and records of content changes. This is risk-management guidance, not an official receipt certification or statutory acceptance rule.

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

        Read the source
        Unclear · Hugging Face Hub — publication venue

        Hugging Face

        Model-card documentation

        A model card is repository documentation describing the model, uses, limitations, training and evaluation. The platform's own guide is a publication workflow, not proof that those statements are true or a regulator's approval.

        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.

        • Hugging Face Hub

          Hosts model and dataset repositories and model cards.

          Visit site

        • MLflow Model Registry

          Keeps model versions, aliases, run lineage and metadata.

          Visit site

        • DVC

          Tracks large data and model artifacts alongside Git workflows.

          Visit site

        Related workflows.

        App ideaSecurity report submittedRelease or commit stampTerms in force on a dateQuarterly user access review: the reviewer list, decisions and removals frozen as submittedAccess or license request, manager approval and grant

        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 show which data trained a model, which weights ran in production, who created them, permission to use them, safety or regulatory satisfaction.

        It does not show which data trained a model, which weights ran in production, who created them, permission to use them, safety or regulatory satisfaction.

        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.

        What belongs with a model-weight snapshot?

        Keep the files and configuration with a versioned model card and repository identifier. Hugging Face's card guide describes training, intended uses, limitations and evaluation as useful documentation.

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

        Context for this answer
        Does a weights hash reveal the training data?

        No. A hash identifies bytes. NIST's suggested documentation treats data provenance, collection methods and model details as information that must be documented and assessed separately.

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

        Context for this answer
        Is a model card a verified history?

        It records supplied descriptions and metadata. The Hub guide explains its format and fields; it does not make every statement independently verified.

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

        Context for this answer
        Can a time receipt satisfy EU model documentation duties?

        Article 53 describes substantive model and downstream documentation within its scope and includes a limited open-source exception. Dating weights does not supply that information or determine whether a duty applies.

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

        Context for this answer
        May a dated archive keep data a deletion order covers?

        A timestamp grants no right to retain material. The cited consent order has deletion duties and specific legal-retention exceptions; this page does not interpret what an organization may keep.

        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.