A WhatsApp affidavit under the Canada Evidence Act
Canadian courts admit an electronic document once you prove its authenticity and the integrity of the system it came from - established by affidavit. Get the affidavit and a SHA-256 hash in one PDF.
Canada Evidence Act s.31 · SHA-256 hash · one-time, no subscription
The problem
A screenshot isn't evidence
Under ss.31.1–31.2 you must prove the record is what it purports to be and satisfy the best-evidence rule by showing the electronic documents system's integrity. Section 31.6 lets you do that by affidavit - which is what this produces.
wachattopdf.com produces the affidavit under Canada Evidence Act, R.S.C. 1985, c. C-5, ss. 31.1–31.6, pre-filled with a SHA-256 hash of your export and the record's particulars - so the chat arrives court-ready.
What Canadian appellate courts actually say about chat and screenshot evidence
Canadian courts have set a deliberately low bar for getting electronic messages in front of a judge. In R. v. Hirsch, 2017 SKCA 14, the Saskatchewan Court of Appeal held that authentication under s. 31.1 of the Canada Evidence Act is a modest threshold - the tendering party only needs evidence capable of supporting a finding that the document is what it purports to be, and circumstantial evidence is enough. The Ontario Court of Appeal confirmed the same in R. v. C.B., 2019 ONCA 380: no independent or expert witness is required, and a party's own testimony about screenshots can clear the bar. In R. v. Martin, 2021 NLCA 1, the Newfoundland and Labrador Court of Appeal added that when messages are captured in screenshots, it is the underlying messages that need authenticating, not the screenshot medium itself - absent credible evidence that the capture process altered the content, the format is immaterial.
The honest counterweight is R. v. Aslami, 2021 ONCA 249, where the Ontario Court of Appeal overturned a conviction that rested on messaging evidence, warning that there are entirely too many ways to make electronic evidence appear to be something it is not. The lesson from the case law taken together: admission is rarely the fight in Canada - reliability and weight are. That is precisely the gap a documented export procedure and a SHA-256 hash address. The hash cannot prove who typed a message, but it can demonstrate that what the court is reading is byte-for-byte identical to what was exported, and s. 31.5 expressly invites evidence of the standards and procedures used to record or store electronic documents. In R. v. Bulldog, 2015 ABCA 251, the Alberta Court of Appeal also confirmed that a copy need not be identical to the original in every respect - what matters is the integrity of the record, which is exactly what a hash lets you speak to.
The s. 31.3 presumptions - why the other side's phone can work in your favour
Beyond the basic authentication and best evidence rules, s. 31.3 of the Canada Evidence Act gives tendering parties three presumptions of integrity that apply absent evidence to the contrary. First, integrity is presumed where the computer system was operating properly - or where any malfunction did not affect the electronic document's integrity. Second, and especially useful in WhatsApp disputes, integrity is presumed where the document was recorded or stored by a party adverse in interest to the one tendering it. Because both sides of a WhatsApp conversation hold the same chat on their own devices, the messages you tender were also recorded and stored on your opponent's phone - their own copy grounds the presumption. Third, integrity is presumed where a non-party recorded or stored the document in the usual and ordinary course of business.
Section 31.6 then lets you establish these integrity matters by affidavit rather than live testimony, subject to cross-examination on the affidavit. One structural point worth knowing: ss. 31.1 - 31.8 deal only with authentication and the best evidence rule. Section 31.7 makes explicit that hearsay is a separate, additional hurdle - the content of the messages must still fit a hearsay exception before a court accepts it for its truth. In practice, WhatsApp messages usually come in through the party-admission route, because the statements a court cares about are typically the ones your opponent wrote. An affidavit and hash get the record through the evidentiary gate; the admissions doctrine usually carries the content.
Federal or provincial rules? Canada's two-statute system for electronic evidence
A distinctly Canadian wrinkle is that which evidence statute governs depends on the forum. The Canada Evidence Act, R.S.C. 1985, c. C-5, ss. 31.1 - 31.8, applies in criminal proceedings and other matters under federal jurisdiction. Civil and family proceedings in the provincial courts run under provincial evidence legislation instead - in Ontario, s. 34.1 of the Evidence Act, R.S.O. 1990, c. E.23, which mirrors the federal scheme almost word for word: s. 34.1(4) places the authentication burden on the tendering party, ss. 34.1(5) - (5.1) satisfy the best evidence rule through proof of the integrity of the electronic records system, and s. 34.1(8) permits evidence of the standards and practices used in recording and storing the records.
British Columbia, Alberta, and the other provinces have equivalent provisions in their own evidence acts, all derived from the Uniform Electronic Evidence Act, so the analysis stays consistent across the country even though the section numbers change. That uniformity matters for a WhatsApp export: whether you are filing in a family matter in Ontario, a small claims dispute in British Columbia, or responding in a criminal proceeding under federal law, the questions are the same - is this document what it claims to be, and can you show the integrity of the system and process that produced it? A dated affidavit describing the export procedure, paired with a SHA-256 hash of the file, answers the same questions under whichever of the two statutory schemes your matter falls.
How it works
Chat in, certified PDF out
Export & upload
In WhatsApp: open the chat → Export Chat → drop the ZIP into wachattopdf.com. Messages, media and voice notes are parsed exactly as sent.
Pick your country
Tick “Court Certificate” and choose your jurisdiction. Optionally add the declarant name and device so the certificate is pre-filled.
Download the PDF
You get a court-ready PDF with the certificate attached and a SHA-256 hash printed on it - ready to complete, sign and file.
One-time · no subscription
- task_altCanada Evidence Act s.31 affidavit attached to the PDF
- task_altSHA-256 hash printed on the certificate
- task_altCourt-ready WhatsApp PDF with Bates numbering
- task_altPII redaction, voice-note transcription & AI-ready JSON included
A fraction of what a lawyer charges to draft one.
FAQ
Canada - answered
How is a WhatsApp chat authenticated in Canada?expand_more
Section 31.1 puts the burden of authenticity on the party tendering the record; s.31.2 satisfies the best-evidence rule on proof of the integrity of the electronic documents system; and s.31.6 lets these be established by affidavit. Our affidavit covers all three and carries a SHA-256 integrity hash.
Does the hash help?expand_more
Yes - a SHA-256 hash is a unique digital fingerprint of the record. An identical hash shows the copy is unaltered, directly supporting the integrity requirement in s.31.2.
Do I still need a lawyer?expand_more
The affidavit is a self-service template and must be sworn or affirmed before an authorised person; provincial rules may vary. It is not legal advice - review it with a lawyer before filing.
Do I have to prove who sent the WhatsApp messages before a Canadian court will admit them?expand_more
Not at the admission stage. In R. v. Hirsch, 2017 SKCA 14, the court held that the sender's identity need not be established to authenticate an electronic document under s. 31.1 - circumstantial evidence that the document is what it purports to be is enough, and authorship goes to weight. But R. v. Aslami, 2021 ONCA 249 shows the other side of that coin: where authorship is genuinely disputed, courts scrutinise message evidence hard, and 'I recognise the number' may not carry the day. The affidavit and hash support the integrity of the record; proving who typed the messages is a separate question for the rest of your evidence.
My matter is a family or civil case in a provincial court - does the Canada Evidence Act even apply?expand_more
Usually not directly. The Canada Evidence Act governs criminal and other federal matters; provincial civil and family cases fall under provincial evidence acts - for example s. 34.1 of Ontario's Evidence Act. The good news is the provincial provisions mirror the federal scheme almost exactly (authentication burden, best evidence via system integrity, standards-and-practices evidence), because both derive from the Uniform Electronic Evidence Act. The same export, affidavit, and SHA-256 hash serve you under either regime.
Are screenshots or printouts of a WhatsApp chat second-class evidence in Canada?expand_more
No. In R. v. Martin, 2021 NLCA 1, the court held that what requires authentication is the underlying messages, not the screenshot medium - the format is immaterial unless there is credible evidence the capture altered the content. And s. 31.2(2) of the Canada Evidence Act says a printout that has been manifestly or consistently acted on, relied on, or used as the record satisfies the best evidence rule on its own. A structured PDF export with a verifiable hash simply gives the court more to rely on than a bare screenshot passed between phones - the scenario R. v. C.B., 2019 ONCA 380 flagged as deserving caution.
Not legal advice. This tool generates a affidavit in the format contemplated by Canada Evidence Act, R.S.C. 1985, c. C-5, ss. 31.1–31.6. It is a self-service template; have a qualified lawyer review, complete and - where required - attest it before filing.
Make your WhatsApp chat court-ready in Canada
Upload the export, pick Canada, and download a signed-and-ready affidavit with a SHA-256 hash.
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