Sign documents the
courts can't dispute.
Argos Endorse seals your agreements with a cloud-HSM private key, a publicly-trusted certificate, and a tamper-evident audit chain — so every signature stands up to Adobe, auditors, and a courtroom.
Built for non-repudiation
Three independent layers of proof on every executed document — not just a picture of a signature.
Cloud-HSM keys
Your signing key lives in SSL.com's FIPS-grade hardware security module and never touches our servers. Signatures are authorized with a per-signature one-time code.
PAdES-LTA seal
Documents are sealed to the PAdES long-term archival standard with a trusted RFC 3161 timestamp, so they verify as valid for decades — even after certificates expire.
Tamper-evident chain
Every step — opened, authenticated, consented, signed, sealed — is written to a hash-chained ledger and anchored, giving you a court-grade record of exactly what happened.
Identity step-up
Signers verify with email one-time codes, or step up to Argos Verify push-MFA for high-value agreements. Every reveal and action is logged.
Filed automatically
Executed documents and their Certificate of Completion file straight into Argos Compass — your system of record — with no manual filing.
Verify anytime
Re-check any sealed document on demand: signature intact, cryptographically valid, and chained to a trusted authority — the same verdict Adobe shows.
From draft to executed in minutes
No accounts for your signers, no software to install — just a secure link.
Upload & address
Drop in a PDF, add your signers by email, and place the signature fields.
Send a secure link
Each signer gets a single-use magic link — no password, no account required.
Verify & sign
The signer confirms identity with a one-time code, reviews the document, and signs.
Sealed & filed
Endorse seals it with your trusted certificate, issues a Certificate of Completion, and files it.
Ready to send your first document?
Sign in with your Argos account to open the signing console.
Open the signing console