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.
timestamp photo app
Keep the original behind every edit.
Timestamp photo app — Keep the original behind every edit. Keep the original photo and optional neighbouring frames or RAW/JPEG pair. Save edited versions separately.
Your photos and files stay on your device, so keep them.
EXAMPLE
Group or event photo before edits
1 Nov 2026
Authority time: 14:02 UTC · example
Bitcoin block time: 14:10 UTC · example
Last checked: 15:02 UTC · example
Bitcoin block time: 14:10 UTC · example
Last checked: 15:02 UTC · example
✓ Dated◆ Permanent
Now keep it safe: three things
- Keep your photos and files unedited. The receipt only matches the originals. Put them in an album such as “My records”.
- Save this receipt to your camera roll.
Keep the receipt file too. The image is a handy copy; checking needs the file.
- 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?
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 upWrite 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.
- Write it down straight away, on paper or in the box on a step.
- Put the date, time and place at the top, and who you spoke to.
- Use their words where you can; separate what you saw from what you were told.
- Sign or initial a paper note, photograph it and add the photo.
- 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.
Group or event photo before edits
Group or event photo before edits
01 · Keep the exact files
Keep the original photo and optional neighbouring frames or RAW/JPEG pair. Save edited versions separately.
Records to keep: Original image file as shot
Group or event photo before edits
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.
Group or event photo before edits
03 · Keep the evidence
Keep exact originals for comparison with filed or published copies. Compression or export changes the fingerprint.
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 original photos matter.
Real cases where dated records mattered. We don’t claim a time receipt would have changed the result.
UK · 2014
Tell readers when a group photo was changed
A paper removed a crew member from a group photo without telling readers. The press panel found the photo misleading. It accepted the paper's offer to explain the change.
Based on a press report of the regulator’s ruling.
Summarized on Oct 29, 2026
Read the report ›International · 2006
Keep news photos before editing them
A news agency pulled a photo with thick black smoke added by an edit. It found a second changed image. It then removed all photos from that photographer from its files.
The linked source is a news report of the agency’s action, rather than a court or regulator decision.
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.
World Press Photo contest
Verification process (2025 contest): entrants must supply the file as recorded by the camera (RAW, or full-format JPEG in a series of at least seven frames); failure eliminates the entry.
A time receipt does not replace the camera-original file; it can only date it. Rules cover the 2025 contest and may change yearly.
Source summary as of 2026-10-28. Check the current source and applicable local rules.
Read the sourceFederal Rules of Evidence 902(14)
Data copied from an electronic device or file is self-authenticating if authenticated by a process of digital identification; the committee note says this is ordinarily a hash value, certified by a qualified person.
Supports hash matching of a copy to its original, with certification and notice. Does not speak to RFC 3161 dating or to who made the photo.
Source summary as of 2026-10-28. Check the current source and applicable local rules.
Read the sourcePress Complaints Commission Editors' Code (accuracy clause 1), as applied in the 2014 Daily Record ruling
PCC held the paper breached Clause 1 (accuracy) by publishing an altered photo without telling readers; it said readers should have been told at the time.
Code has no rule on dated records; a dated original would be useful evidence but no rule names it. Note the PCC has since been replaced by IPSO.
Source summary as of 2026-10-28. Check the current source and applicable local rules.
Read the sourceOther ways to do this
Prices change. Check each provider’s site for current prices and service details.
Related workflows.
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 photo, where or when it was actually shot, that the file is unedited straight from the camera, or that what it shows is true.
This cannot establish that a file came straight from the camera, who took it, when it was captured or whether the scene is true.
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 prove my photo is unedited?
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.
Do I need to upload my photo?
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.
Which file should I receipt: RAW or JPEG?
The first-generation file from the camera or phone, before any app, crop or export. Press contests ask for the file as recorded by the camera, plus neighbouring frames.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerWhy not just use the photo's date in its metadata?
Metadata can be edited or stripped, and a camera clock can be wrong. A receipt is dated by an outside timestamp authority.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerIf I resize or compress a photo, does the receipt still match?
No. Any change to the bytes changes the fingerprint, so a receipt matches only the exact file. Receipt each version you need to prove.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerWill a court accept the receipt?
Courts and other bodies decide that. In US federal courts, hash-matched copies can be authenticated under Rule 902(14) with a qualified person's certification, but weight and admissibility are for the judge.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerDoes it show who took the photo or where?
No. It does not prove authorship, location, or that the scene is true. Keep your own notes and the neighbouring frames.
What if a news outlet or contest asks for my original?
Send the camera-recorded file they ask for. The receipt helps show that file is the same one that existed on the receipt date.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerThe 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.