A signed document does not end when the last signer clicks. It ends the next time someone asks whether that file is the one that was completed — a client, an auditor, a case file, or the same team a year later.
Most signing tools stop at collection. That is enough for an informal agreement. It is not enough when the file travels, is forwarded, and is archived outside the platform.
Sigil is built for that second moment. A PDF is sent, signatures are collected, the finished file is sealed, and a path remains to verify it: a public link, or upload the document. What you are holding is compared with what was kept at completion.
That covers one-off contracts, the same PDF to many people, personalized issuance, and payroll receipts with agreement or disagreement. The signer does not need an account. The sender needs, afterwards, not to argue about versions.
When the document is a step inside a procedure, Praxis carries the case file across departments. Sigil seals what must remain signed. They can be used separately.
If this looks like a problem you have, write to us.