One-time code
StandardA six-digit code sent to the signer's email and entered before signing. A signer with no email gets it by SMS.
Good for: internal approvals, NDAs, routine contracts
Signatures you can stand behind.
Send a document, verify who signed it, get a sealed copy with the audit trail. Signers only need the link.
From upload to sealed in four steps
Under five minutes from PDF to sent.
Choose how much proof you need
Set for each signer. A routine approval and a high-value agreement need not carry the same friction.
Photo ID
StrongerA code plus a photo of a government ID, kept in the evidence record.
Good for: loans, share transfers, anything a court may see
Independent verification
Anyone can check a signed document. No account needed.
Drop the sealed PDF and its manifest into the verifier. It checks the audit chain, the seal, the PDF's own signature, the timestamp, and that the document names this chain. Nothing is read from your organisation's records, so the same checks still pass years from now. A recipient's copy of the manifest leaves out IP addresses and browser details, so its audit chain is checked in full with the sender's copy.
Open the verifier
Result
Seal not publicly trusted
Audit chain
9 events, every hash recomputed.
last hash 3f9a2c7e1b04…d9e1
Seal
Privately configured seal, not publicly trusted: signed by a MirraSign key from a
privately configured authority, and the document has not changed since.
key mirrasign-seal-2026-01
Signature inside the PDF
The PDF's own signature verifies.
Timestamp
Issued by an independent authority.
digicert 2026-09-09T11:02:41Z
Chain and document
The document names this audit chain.
envelope 7c1e04a2…b3f0
Sealed copies carry a privately configured seal, not publicly trusted: the certificate page and our verifier confirm the document is intact, but a PDF reader will not yet show our seal as trusted.
Questions
Is an electronic signature legally binding in Tanzania?
Yes. The Electronic Transactions Act 2015 recognises electronic signatures. The audit trail, identity check and seal give you the evidence to rely on it.
Do signers need a MirraSign account?
No. Signers get a private link, verify, and sign in the browser. Only senders need an account.
What happens if a signer declines or does not respond?
A decline stops the envelope and notifies you. Unsigned envelopes get automatic reminders and expire after 30 days. Extend, resend or void any time.
Can I check a signed document myself?
Yes, with MirraSign's own verifier — no account needed. Drop in the sealed PDF and its manifest and the checks run on those two files alone, reading nothing from your organisation's records, so the same check still passes years later. A recipient's copy of the manifest leaves out IP addresses and browser details, so its audit chain is checked in full with the sender's copy. Once the trusted seal is live, the PDF's own signature will also check out directly in any standard PDF reader.
Where is my data stored and who can see it?
Your data is stored in Tanzania. Access is enforced per organisation at the database level, not only in application code. Everything is encrypted in transit with TLS 1.3, and senders can protect their own account with an authenticator app. Completed envelopes are sealed and their evidence retained for seven years.