Are Timestamped Photos Valid Evidence in Vietnam?
Can timestamped photos be used as evidence in Vietnam? Electronic data under Vietnamese law, what boosts credibility, vi bang records, and app limits.
Short answer: a photo, including a timestamped one, can be considered as a source of evidence under Vietnamese law because it is electronic data, but whether it is accepted and how much weight it carries is for the court or other competent authority to assess in each case. A date printed on an image does not, on its own, prove when the photo was taken. What makes the difference is how the file was created, how it was kept, and whether you can show it has not been altered.
Note: This article is general information, not legal advice. Laws change and every case turns on its own facts. If you are in, or expect, a dispute, please consult a lawyer qualified in Vietnamese law.
What Vietnamese law says about electronic data as evidence
The 2015 Civil Procedure Code
The 2015 Civil Procedure Code (Bộ luật Tố tụng dân sự 2015, as amended) lists electronic data as one of the sources of evidence, alongside readable, audible and visible materials, exhibits, testimony, expert conclusions and other sources (Article 94). The Code also has a provision on determining evidence, which refers electronic data messages back to the law on electronic transactions (Article 95).
Commentary in Vietnamese judicial journals has pointed out that these provisions are largely a list, and that courts have not always applied them in a uniform way. Put simply: the framework recognizes electronic data, but how a particular file is weighed still depends heavily on the case.
Vietnam’s criminal and administrative procedure laws also recognize electronic data as a source of evidence, with their own collection procedures. This article focuses on civil matters, where individuals and businesses usually supply photos themselves.
The Law on Electronic Transactions 2023
The Law on Electronic Transactions No. 20/2023/QH15 (effective 1 July 2024) sets out a basic principle: information is not denied legal effect solely because it is in the form of a data message. The law contains a dedicated provision on data messages used as evidence (Article 11). As we understand it, their evidentiary value is assessed against factors such as the reliability of how the message was created, stored and transmitted; how its integrity was ensured and maintained; how the originator can be identified; and other relevant factors.
The law also addresses integrity: information is considered intact when it has not been changed, apart from changes in form that arise during sending, storage or display. That is the crux for photos: can you show the file has not been edited?
A “source of evidence” is not yet “evidence”
Being in the list of evidence sources does not mean a photo automatically proves anything. In civil proceedings, evidence is commonly assessed against three qualities:
| Quality | What it means for a photo |
|---|---|
| Objective | It reflects what actually happened, without staging or editing |
| Relevant | It shows what needs to be proven (condition, time, place) |
| Lawful | It was obtained properly, without unlawfully intruding on privacy |
The other party may challenge your photo, arguing it was edited, taken on a different day or somewhere else. At that point the supporting factors below decide how well it stands up.
What makes a photo more credible
- The original file: keep the file exactly as the device produced it, not just a copy compressed by social media or a chat app.
- Metadata: EXIF data such as time, device and location. Useful, but editable with ordinary software, so it should not be your only pillar.
- Chain of custody: a record of who took the photo, where it was stored, who it was passed to and when. A clear chain answers “at which step could this file have been changed?”.
- Integrity checks: a cryptographic fingerprint such as SHA-256 of the original, recorded early, lets anyone compare later. Change a single pixel and the hash changes completely. See detecting edited photos with SHA-256.
- An independent time source: time from a server rather than a phone clock the user can change. Our article on trusted time vs phone time explains why it matters.
- Corroborating records: the message in which you sent the photo at the time, emails, contracts, signed handover records, invoices.
- Witnesses: people who were present and can confirm what was photographed.
- A vi bang record: an official record of events made by an authorized officer who witnessed them directly (see next section).
- Expert examination: in a hard-fought case, a court may order a forensic examination of the electronic data.
Vi bang records: when you need a stronger confirmation
A vi bang is a written record of real events or acts that an authorized officer witnesses directly and prepares at someone’s request; it may include photos and video. Under Decree 08/2020/ND-CP, a vi bang prepared by a bailiff (Thua phat lai) following the proper procedure is a source of evidence for courts to consider in civil and administrative cases. A vi bang does not replace notarization or certification, and it records facts without judging whether they are lawful.
From 1 July 2026, under the 2025 Law on Civil Judgment Enforcement and its implementing decree (Decree 151/2026/ND-CP), the bailiff title is renamed Thua hanh vien, bailiff offices become civil judgment enforcement offices, and preparing vi bang remains one of the officer’s functions. These changes are in a transition period, so check the current rules or ask a lawyer before relying on them.
A vi bang makes sense when the stakes are high or the situation cannot be recreated: handing over premises, the condition of neighbouring buildings before construction starts, or the content of a website at a given moment. For day-to-day work, the cost and time usually do not fit, and that is where a disciplined photo process earns its keep.
What a stamp app can and cannot do
It helps to separate three things: an ordinary stamped photo, a verifiable photo, and a certified timestamp. A certified timestamp, issued by a recognized timestamping service and tied to a digital signature, is a distinct legal mechanism. Our comparison of timestamped vs verifiable photos goes into the differences.
| SnapID Mark can | SnapID Mark cannot |
|---|---|
| Burn in trusted time synced with a server, unaffected by changing the phone clock | Issue a certified timestamp or a digital signature |
| Attach a SnapID code and QR so anyone can look up the record | Replace a vi bang, notarization or an expert opinion |
| Record GPS, accuracy, address and weather | Guarantee that a court or the other party will accept the photo |
| Re-check every upload on the server and flag mock GPS, rooted/jailbroken devices, clock drift, outside geofence, late upload | Prove that what is in the frame was not staged |
| Let a recipient compare a file with the original via SHA-256 in their browser | Collect evidence under formal procedural rules |
In short, SnapID Mark makes your photos more transparent and easier to check, supporting factors like an independent time source, a custody trail and integrity verification. It does not turn a photo into evidence that is certain to be accepted. Read how it works under security and try the verify demo.
A practical workflow for photos you may need as evidence
- Shoot with an app that uses an independent time source and a lookup code.
- Capture wide shots and close-ups, enough for a stranger to understand the context.
- Keep the original file and back it up straight away.
- Send the photo or its lookup code to the other party early, through a channel that leaves a trace (email, message).
- Add a short note: who took it, where, why, and who else was present.
- For anything important, consider a vi bang and talk to a lawyer as early as possible.
FAQ
Can a screenshot of a chat be used as evidence?
It can be considered as electronic data, but it is often easy to challenge because integrity is hard to show. Keep the original device and messages, and consider a vi bang if the content matters.
Does the date printed on a photo prove when it was taken?
Not on its own, because many apps take the time from the phone, which the user can change. A server-sourced time with an independent lookup record is more credible, but it is still for the competent authority to weigh.
Can SnapID Mark replace a vi bang?
No. A vi bang is prepared by an authorized officer who witnesses events directly, following a legal procedure. SnapID Mark only makes your photos easier to verify.
When should I see a lawyer?
When the amount at stake is significant, when the other side disputes your evidence, or before filing a lawsuit. A lawyer can advise how to collect, preserve and submit evidence properly.
If you want everyday photos to carry trusted time, location and a verification code from the moment they are taken, download SnapID Mark, and pair it with proper legal advice when the stakes are high.