Can you notarize WhatsApp messages for court?

You can have a printout of your WhatsApp chat notarized, either as a certified copy or as an affidavit you swear in front of a notary. It is important to understand what that stamp does. A notary confirms your identity and that you signed or swore the document, or that a photocopy matches the paper you presented. When a notary certifies a copy, the notary is not guaranteeing the authenticity of the original or its contents. So a notarized printout proves you made a declaration, not that the WhatsApp conversation is genuine, complete or unaltered, and not when the messages were really sent. ProofSnap certifies the export itself, which proves the export is unaltered since sealing and existed no later than the timestamp. ProofSnap is an evidence tool, not legal advice.

Does a notary prove the WhatsApp messages are genuine and unaltered?

No. A notary attests to the act in front of them: your identity and signature, or that a copy is true to the page you showed them. The notary does not inspect the phone, does not verify that the export is complete, and cannot prove the messages were not edited before printing or that they were sent on the dates shown. Integrity and timing from the moment of sealing are exactly what a cryptographic certification adds: a SHA-256 hash makes any later change detectable, and an independent timestamp fixes the moment the evidence existed.

What is the difference between notarizing and certifying a WhatsApp chat?

Notarizing adds a human notary's stamp to a printout or an affidavit, confirming identity and the act of signing. Certifying, as ProofSnap does it, seals the actual export file: we render a readable, line-numbered transcript, hash every file with SHA-256, sign a manifest, add a chain of custody, anchor it in the Bitcoin blockchain and add an eIDAS qualified timestamp, and preserve your raw export untouched. The result is verifiable by anyone, for free, with no need to contact a notary or a registry, and in the EU the qualified timestamp carries a presumption of accuracy of the date and integrity of the data.

Is certification cheaper and faster than a notary?

For proving a chat, usually yes. Notary fees are charged per signature or per session and set by each state, and you also spend time preparing a printout or affidavit and booking an appointment, while the stamp still does not prove the data is unaltered. ProofSnap is a flat 59.99 US dollars for one conversation, delivered within 48 hours, and it seals integrity, a provable date and chain of custody in one package that anyone can verify for free.

How do I export the WhatsApp chat to certify it?

WhatsApp has a built-in per-chat export. On Android, open the chat, tap More options (the three-dot menu), then More, then Export chat, and choose Include media. On iPhone, tap the contact or group name at the top, scroll down, tap Export chat, choose Attach media and Save to Files. On WhatsApp Desktop (Mac or Windows), right-click the conversation in your chat list, click Export chat, then choose Attach media. You get a .zip with a _chat.txt file plus the media. Send us that export. The in-app export is disabled when Advanced Chat Privacy is on for a chat; in that case turn it off, use a device backup or email us.

Is a certified WhatsApp export admissible in court?

The package gives the court hashes of every file, a signed manifest, a chain of custody from the moment we receive the export, and the preserved raw export. In US federal courts, self-authentication of copied electronic data under FRE 902(14) also needs a certification by a qualified person and advance notice to the other side. The eIDAS qualified timestamp from Disig carries a presumption of accuracy of the date and integrity of the data in the EU. Admissibility and weight are decided by the court. ProofSnap is an evidence tool, not legal advice.

Do I still need a notary if I certify the chat?

Often not, but it depends on your jurisdiction and what the court or process specifically requires. Some proceedings ask for a notarized affidavit or a sworn statement regardless of the exhibit. Where that is the case, the two are complementary: certification makes the underlying WhatsApp evidence hard to challenge on integrity and timing, and you can still attach it to a notarized declaration. When in doubt, ask your lawyer which form the court expects. ProofSnap is an evidence tool, not legal advice.

Notarize your WhatsApp chat, the modern way

Looking to notarize your WhatsApp messages? There is a faster, self-verifiable alternative.

You can notarize a WhatsApp printout in 2026, but the notary stamp attests to your copy or declaration, not to whether the chat is genuine, complete or unaltered. ProofSnap certifies the export itself instead, with a SHA-256 hash, a chain of custody and an eIDAS qualified timestamp anyone can verify.

Export the conversation, send it to us, and within 48 hours you get a certified package with a provable date and an integrity you can verify for free, for a flat $59.99.

1Export the WhatsApp chat 2Pay $59.99 and upload 3Certified transcript in 48 hours

No appointment, no travel. Your package carries a SHA-256 hash, a chain of custody and an eIDAS qualified timestamp (with a legal presumption of accuracy in the EU), and anyone can verify it for free, without contacting a notary or a registry.

Certify your chat · $59.99 Notary vs certification

Not sure you can export? Email us first and we will check before you pay.

Delivered in 48 hours · Verifiable by anyone, for free · eIDAS qualified timestamp

WhatsApp_chat.pdf

Printout with a notary stamp

2:02 PM - John: I'll transfer the deposit today.

2:05 PM - Me: You'll get the keys Friday.

2:11 PM - John: Done. Sent EUR 1,200.

NOTARY

PUBLIC

Certifies the copy or your affidavit, not the integrity of the chat.

stamp ≠ integrity

Transcript.pdf

Certified · verifiable by anyone

04514:02 A: I'll transfer...

04714:05 B: You'll get...

04914:11 A: Done. Sent...

SHA-256 manifest + signature

eIDAS qualified timestamp

Free public verification

Sealed

Illustrative example. A notary stamp validates the paper in front of them. A certified export proves the data itself is intact and existed at a provable time.

By Radim Motycka, Founder and Lead Engineer, ProofSnap, 10+ years in cryptographic protocol design · Updated October 16, 2026

$59.99

flat, per conversation

48 h

no appointment needed

Free

verification by anyone

eIDAS

qualified timestamp, not just a stamp

Secure payments via Stripe Open, free verification (MIT) Disig a.s., QTSP on the EU Trusted List Bitcoin OpenTimestamps anchor

Every package can be verified by anyone, for free, in the open Trust Verifier.

Quick answer

Can you notarize WhatsApp messages, and should you?

You can have a printout of your WhatsApp chat notarized, but a notary stamp does less than most people expect. A notary confirms your identity and that you signed or swore a document, or that a photocopy matches the paper you presented. When a notary certifies a copy, they are not vouching for the authenticity of the original or its contents. So a notarized printout proves you made a declaration, not that the conversation is genuine, complete or unaltered, and not when the messages were really sent.

Certification seals the export file itself: a SHA-256 hash makes tampering detectable, an independent timestamp fixes when it existed, and anyone can verify it for free. One conversation is $59.99, delivered in 48 hours.

If your court specifically requires a notarial act, the two are complementary. ProofSnap is an evidence tool, not legal advice.

What a notary can, and cannot, do for a WhatsApp chat

Notarizing a chat is real and sometimes useful, but it is easy to overestimate. Here is the honest picture, so you buy the protection you actually need.

What a notary does

Confirms your identity and witnesses that you signed or swore an affidavit or declaration.
Can make a certified copy, stating the photocopy is a true copy of the paper you presented.
Applies a seal and a record that a court recognizes as a formal notarial act.

What a notary does not do

Does not vouch for the authenticity of the original content, only that a copy matches what you showed.
Cannot detect whether a printout was edited before it was brought in, or whether the export is complete.
Cannot prove when the messages were actually sent; the notarization date is not the conversation's date.
Leaves no cryptographic integrity, so a later edit of the digital file is not detectable from the stamp.

In short, a notary vouches for the act, not for the data. The American Society of Notaries makes the same point about certified copies: the notary states only that the photocopy is a true copy of the original presented. Certification is the missing half: it proves the WhatsApp export is intact and existed at a provable time.

Certification vs a notary, point by point

For proving that a WhatsApp conversation is genuine and unaltered, a cryptographic certification does more, faster, and for a predictable price.

Faster

No appointment, no travel, no printing and swearing an affidavit. Export, pay, upload, and the sealed package arrives within 48 hours.

Predictable price

A flat $59.99 for the whole conversation, transcript and all. No per-signature fees, and and no second fee to prove the data is intact, which a stamp cannot do.

Verifiable by anyone, free

A notary stamp is typically checked with the notary or a registry. A certified package is checked by anyone in seconds in the open Trust Verifier, at no cost.

Proves integrity, not just a copy

A SHA-256 hash makes any change to a single character detectable. The stamp on a printout cannot do that for the underlying digital file.

A provable date with legal weight

In the EU, an eIDAS qualified timestamp carries a presumption of the accuracy of the date and of the integrity of the data, and a Bitcoin anchor sits alongside it. A notarization date is only the day you visited.

Preserved raw source

We keep your untouched export inside the package, so a court-appointed technician can re-derive and verify the transcript. A stamped photocopy has no such source to fall back on.

From "I have the messages" to certified, in four steps

A done-for-you service. You export and send, we do the rest, you receive the sealed package within 48 hours.

Export the WhatsApp chat

On a computer, right-click the conversation and choose Export chat. On a phone, open the chat and use Export chat.

See exact steps ↓

Order and pay

Pay the one-time $59.99 for your conversation.

Pay $59.99

Upload on the secure page

A secure upload page opens right after payment. Upload your files and tell us which chat to certify plus any case reference.

We certify and deliver

A signed ZIP with your line-numbered transcript, preserved raw export, Bitcoin anchor and eIDAS timestamp, within 48 hours.

Step 1 in detail

How to export the WhatsApp chat

WhatsApp has a built-in per-chat export on your phone (iPhone and Android) and in the WhatsApp Desktop app (Mac and Windows). Send us the export with media and we do the rest.

On a computer, in WhatsApp Desktop (Mac and Windows)

Chat with John Smith

Right-click, or use the chevron

Mark as unread

Export from WhatsApp Desktop

In the WhatsApp Desktop app on Mac or Windows, this is the quickest route:

1Right-click the conversation in your chat list (or click the chevron that appears on hover), then click Export chat.
2Choose Attach media (recommended) or Without media.
3The file is saved straight to your Downloads folder (a message confirms "Exported chat was saved to Downloads folder"). Send us that .zip.

You get the same _chat.txt plus media as the phone export. Desktop is easiest when the chat is already on your computer, or is too large to email from a phone.

On your phone (iPhone and Android)

John Smith

Edit

Contact details

Share contact

Add to Favorites

Add to list

Export chat 1

Clear chat

Export chat

Attaching media will generate a larger chat archive.

Attach media 2

Without media

Export from your phone

On iPhone: open the chat with that person or group, then:

1Tap the contact or group name at the top to open contact info.
2Scroll down and tap Export chat.
3Choose Attach media (recommended) or Without media, then Save to Files.

On Android: open the chat with that person or group, then:

1Tap More options (the three-dot menu at the top right).
2Tap More, then Export chat.
3Choose Include media (recommended) or Without media, then pick how to save it.

Export chat grayed out or missing?

One setting can hide the in-app Export chat: it is disabled when Advanced Chat Privacy is turned on for that chat, and in a group only an admin can switch it off. Turn Advanced Chat Privacy off (or ask the admin) and export again, use a device backup, or email us and we will guide you.

For the exact click-by-click with screenshots, see our guide to exporting and printing a WhatsApp chat for court, or WhatsApp's guide to exporting your chat history.

Send us everything (recommended)

The primary artifact is the _chat.txt export plus its media folder. For the strongest exhibit, if available also send the WhatsApp message database. We seal the database as sent, hashed and timestamped, never opened. If authenticity is ever disputed, a court-appointed technician can verify the transcript against the source. Decrypting the database needs its key, which the custodian provides separately.

Optional: the message database

Find your device below, then send us the folder it points to. When in doubt, send more rather than less.

Android phone

Connect by USB and copy the whole WhatsApp folder:

Android/media/com.whatsapp/WhatsApp/ (older devices /sdcard/WhatsApp/)

•Databases/: take msgstore.db.crypt15 and every dated msgstore-...crypt15 backup
•Media/: the attachments

Your 64-digit key: WhatsApp › Settings › Chats › Chat backup › End-to-end encrypted backup.

iPhone

The store lives inside a device backup, so make a full local backup:

1.Plug the iPhone into a Mac (Finder) or Windows PC (Apple Devices / iTunes)
2.Check Encrypt local backup, set a password, back up
3.Send the whole backup folder:
~/Library/Application Support/MobileSync/Backup/ (Mac)
%APPDATA%\Apple\MobileSync\Backup\ (Windows)

Encrypting the backup is what keeps the WhatsApp data complete.

Mac (WhatsApp Desktop)

Zip this whole folder as-is (needs Full Disk Access):

~/Library/Group Containers/group.net.whatsapp.WhatsApp.shared/

It keeps these together:

•Messages: ChatStorage.sqlite with its -wal and -shm sidecars (deleted and recent messages can live only in -wal)
•Attachments: Media/ and Message/ folders
•Who is who: ContactsV2.sqlite and LID.sqlite
•Keys and identity: Axolotl.sqlite and enc-key.dat

Too large to zip whole? Send at least these, each .sqlite with its -wal and -shm.

Windows (WhatsApp Desktop)

Zip the whole folder for whichever build you have:

•Store / older app:
%LOCALAPPDATA%\Packages\5319275A.WhatsAppDesktop_cv1g1gvanyjgm\LocalState\
SQLite files with their -wal / -shm and cached media
•Newer WebView2 build (default since late 2025) and website installer:
%APPDATA%\WhatsApp\
including IndexedDB\file__0.indexeddb.leveldb\ (all .log / .ldb files), plus Local Storage\ and Cache\

Not sure which you have? Zip both paths if present, or just tell us.

Your files stay encrypted. Keep your key or backup password yourself. We seal the database and backups exactly as sent, hashed and timestamped, and never open them. You only hand the key to a court-appointed technician if authenticity is ever disputed. After we deliver your finished package, we keep our working copy for 30 days for support and disputes, then delete it automatically.

What you get back

A readable transcript of the whole conversation, with the images in place

Instead of a stamped printout, we render your conversation into a clean, line-numbered Chat Conversation Transcript PDF: every message in original send order, the photos shown inline exactly where they were sent, and every other attachment referenced by file name and linked to the preserved file inside the package.

Every message in original send order, by timestamp, numbered in the left margin so you can cite "Line 47"

Photos and images rendered inline, in place, so the message and the picture are read together

Documents, videos and voice notes referenced by file name and linked to the preserved attachment in the ZIP

Cover sheet: parties, case reference, date range, message count, source file and source SHA-256

A faithful rendering: nothing added, altered, reordered or omitted, not a selective extract

ProofSnap_Transcript.pdf

04514:02 A: I'll transfer the deposit today.

04614:03 A: Send me the address.

IMG_2043.jpg
shown inline

04714:05 B: You'll get the keys Friday.

contract_scan.pdf

Illustrative. Images appear in place; other files link to the preserved originals.

Certify your chat · $59.99

Two layers of proof, and what each one means

Both layers are included in every certification. The qualified timestamp is what carries legal weight in the EU, and neither depends on a notary being available.

Bitcoin OpenTimestamps

The SHA-256 hash of your sealed manifest is anchored in the Bitcoin blockchain: a decentralized, independent, tamper-resistant proof that the export existed at a point in time. How much weight it carries is for the court to decide.

eIDAS qualified timestamp

Legal presumption in the EU

Issued by Disig a.s., a Qualified Trust Service Provider on the EU Trusted List.

"A qualified electronic time stamp shall enjoy the presumption of the accuracy of the date and the time it indicates and the integrity of the data to which the date and time are bound."

Article 41(2), Regulation (EU) No 910/2014 (eIDAS), consolidated text.

What certification proves, and what it does not

What certification proves

The export existed in that exact state no later than the timestamp.
It has not been altered since it was sealed.
The raw export is preserved for later expert examination.
If you also send the sealed message database, an expert can examine it later, including the account each message is bound to.

What it does not do

On its own the transcript ties messages to an account, not conclusively to a person; an account is not proof that a specific hand typed the message.
It is verifiable preservation, not a full forensic acquisition of the device.
Admissibility and final authorship are decided by the court.

We make the content and order of your export verifiable from the moment we receive it, and fix the point in time at which it existed. Send the message database too and an expert can examine it later. The court makes the final call on authorship, as it always does.

Built to support authentication in US courts and the eIDAS presumption in the EU. ProofSnap is an evidence tool, not legal advice. For your specific case, and if a notarial act is required, consult a qualified lawyer.

Pricing

Already have the WhatsApp conversation exported? We certify it as-is.

One certification covers one conversation, including its attachments and any supporting file.

Done-for-you certification

WhatsApp Chat Certification

1 conversation · certified in 48 hours

$59.99

Your WhatsApp export, certified as-is
Readable, line-numbered transcript rendered for court
eIDAS qualified timestamp + Bitcoin anchor
Signed ZIP + certificate PDF + chain of custody
Verifiable by anyone, for free, no notary needed

Certify your chat · $59.99

Right after payment, a secure upload page appears where you send us your files, so nothing sensitive has to go by email. Not sure what you have? Ask us before you order.

Add a signed technical report at checkout, $24.99. It documents what we received and how it was sealed, is signed by the examiner, and is available in 29 languages.

Your court asked for a notarized affidavit too?

Certification and a notarial act are complementary. Attach the certified package to your sworn statement, and ask your lawyer which form the court expects.

A different messenger or the full service?

See the full WhatsApp chat evidence service, or certify Signal chat exports, Telegram chat exports, plus documents and recordings.

ProofSnap vs a notary vs a screenshot

What each option actually gives you when a WhatsApp conversation is challenged.

Feature	ProofSnap	In-person notary	Online notary	Screenshot
Proves the chat is unaltered (hash)		No	No	No
Independent provable timestamp		Visit date only	Session date only	No
eIDAS presumption of date and integrity (EU)		No	No	No
Verifiable by anyone, for free		Validate with notary	Validate with provider	No
Turnaround	48 hours, remote	Appointment	Same day	Instant, no proof
Typical price	$59.99 flat	Per signature, set by state	Per session	Free

Notary fees vary by jurisdiction. A notarial act and a certification answer different questions, and where a court requires the notarial act, the two are used together.

Frequently asked questions

Certify a conversation · $59.99

For a website, not a chat

Need to prove a web page, not a WhatsApp conversation?

This page is about WhatsApp chats. If your evidence is a website, a social post, a marketplace listing or an online review, ProofSnap is a Chrome extension that lets you capture it as evidence yourself, in seconds. Same integrity you get here: a SHA-256 hash, an RSA-4096 signature, a Bitcoin blockchain timestamp and a Provenance Certificate, packaged into an 11 to 15 file evidence ZIP you can verify for free. The extension also captures a chat you open in WhatsApp Web: see how to capture chats as evidence.

Standard SnapPack

10 captures · no expiration · one-time purchase

$4.99

Pay-as-you-go, no subscription. All features: export, metadata, a short video proof, Provenance Certificate and blockchain timestamp.

Legal presumption in the EU

eIDAS SnapPack

EU qualified timestamps (Disig a.s.)

$24.99 / 5 stamps

$5.00 / stamp · also 1× $6.99 or 10× $49.99

Adds a qualified eIDAS timestamp per capture, with a legal presumption of accuracy across the EU. White-label branding on the evidence PDF.

Subscription

Essential · Professional · Enterprise

From $8.99 / month

Annual plans available

For regular use: monthly capture allowances, File Certification and eIDAS stamps on higher tiers. Includes a 7-day free trial (a credit card is required to start).

Prefer no subscription and no auto-renewal? The Standard SnapPack at $4.99 is a one-time purchase. SnapPacks are bought inside the extension after you install it. See the full ProofSnap pricing and features on getproofsnap.com.

Install ProofSnap for Chrome

Free to install · capture your first web evidence in under a minute.