Certificate of completion

What does Certificate of completion mean?

A certificate of completion is a summary page or document generated once every party has signed, listing who signed, when, and how the finished file can be verified. Some vendors call it a signing certificate, completion certificate or audit certificate; whatever the label, it is the human-readable proof that an e-signature transaction finished.

The certificate is built from the audit trail. Where the trail is a detailed log of events, the certificate condenses it into something you can print, attach to a file, or hand to a lawyer: the document title, the sender, each signer's name and email, the time they signed, and typically IP and device information. Good certificates also include a document hash so the reader can confirm the certificate belongs to one specific version of the file.

Consider an HR team onboarding ten new hires in a month. Each offer letter comes back with a certificate of completion. When an auditor later asks for evidence that an employee accepted the confidentiality clause before their start date, HR does not need to dig through inboxes. They open the certificate, point to the signing timestamp, and are done in two minutes.

People often assume a certificate of completion is a government-issued or legally mandated document. It is not. It is produced by the signing platform, and its weight comes from being accurate, consistent and linked to the actual file. It is also not the same as a digital certificate used in PKI, and it does not by itself turn a simple electronic signature into an advanced or qualified one under eIDAS.

Another point of confusion: the certificate is not a substitute for the signed document. Keep both. The contract holds the terms; the certificate shows how those terms were agreed. A sensible habit is to store them in the same folder with matching file names, so that anyone looking for the contract later finds the evidence at the same time. If the certificate lists a hash, you can also check at any point that the stored contract has not been swapped for a different draft.

Our take: a certificate is only useful if a non-technical person can read it. Dense logs full of internal IDs look impressive but help nobody in a dispute. Plain names, clear times and a way to check the file matter most.

With eSignSimple, a certificate of completion is created automatically when the last signer finishes. It summarises the audit trail, including timestamps, IP addresses and device details, and shows the SHA-256 hash of the original document; the hash of the final signed PDF is stored by us and can be checked against our public /verify page by anyone who holds a copy.

What is an example of certificate of completion?

An HR manager onboards a new hire who signs an offer letter and a confidentiality agreement. When the last signature lands, eSignSimple stamps a certificate of completion onto the PDF listing each signer's name, email, signing time, IP address and the document's SHA-256 fingerprint. The manager files that single PDF in the employee record, with no separate evidence file to lose.

What is on an eSignSimple certificate of completion?

The certificate is appended to the signed PDF when the last signer finishes. The header lists the document title, an envelope ID that uniquely identifies the signing request, the sender's email, the time the request was sent and the time it was completed, and the SHA-256 fingerprint of the original document as uploaded. Times are in UTC so they read the same in every country.

Below that, each signer appears with their position in the order, name and email, the time they signed, the IP address, a device description taken from their browser, and a note that they consented to use electronic records and signatures. Then comes the full audit trail, one event per line, from upload through to completion, including any reminders. The last lines explain how to confirm the file has not been changed by checking it on our /verify page. On the Gold plan the certificate also carries the sender's logo and brand colour.

Why does the certificate show the original hash, not the final one?

A file cannot contain its own fingerprint: writing the hash onto a page changes the file, which changes the hash. So the certificate prints the fingerprint of the document as originally uploaded, which proves which starting file the process used. When the signed PDF, with its certificate page, is sealed, eSignSimple computes the SHA-256 of that final file and records it on our side.

That final fingerprint is what the public verify page checks. Anyone holding a copy can select the file there; the page computes its fingerprint in their browser and tells them whether it matches a completed document, along with the title, completion time and signers. If the copy has been edited, re-saved or had pages removed, it will not match. Our document hash entry explains why even invisible changes break the match.

How do you use a certificate in a dispute or an audit?

Start by checking the file. Run the PDF you plan to rely on through the verify page and note the result; if it matches, you know you are holding the exact completed file. Then read the certificate as a story: who sent what, to whom, when it was opened, when each person signed and from where. Prepare a one-paragraph summary in plain language, because the person reading it may not know what an IP address or UTC is.

Provide the original PDF file, not a printout or a scan, whenever you can, since a printout cannot be verified against its fingerprint. If someone only accepts paper, print it, but keep the original file and mention that it can be checked independently. For HR or compliance audits, store certificates in the same folder as the employee or customer record so you can produce one in minutes rather than hunting through inboxes.

Which terms are related?

• Audit trail: An audit trail is a chronological record of events in a document's signing process, such as sending, viewing and signing, with timestamps.
• Document hash: A document hash is a fixed-length fingerprint computed from a file's contents; any change to the file produces a different hash.
• SHA-256: SHA-256 is a cryptographic hash function from the SHA-2 family that turns any file into a unique 256-bit fingerprint used to detect tampering.
• Tamper-evident seal: A tamper-evident seal is a cryptographic seal on a PDF that shows whether the document has been changed in any way after it was signed.