Adobe Platform Seal – Proof Help Center
The Adobe Platform Seal feature in Proof uses Adobe Approved Trust List (AATL) certificates to tamper-seal eSigned documents, displaying a green checkmark in Adobe for certified single-party signed documents (excluding multi-party and notarized ones), and can be enabled by contacting Proof’s Customer Success Manager or Support team.
Audience: Everyone
The Adobe Approved Trust List (AATL) enables people worldwide to sign documents using digital signing certificates that are trusted globally. Proof uses an AATL certificate to tamper-seal eSigned documents.
Adobe seal
When this feature is enabled, eSigned documents completed on our platform display a green checkmark if opened in Adobe. Documents that are not secured to this standard display a yellow exclamation mark.
AATL certification currently excludes documents signed by multiple parties and documents signed and sealed by a notary.
How to enable
To enable AATL, contact your Customer Success Manager (CSM) or our Support team.
Once enabled, anyone using Adobe to open an eSigned document initiated by your organization will see the green checkmark.
Summary Checklist
- AATL must be enabled by Proof — contact your CSM or Support team to get started.
- Enabled eSigned documents show a green checkmark in Adobe; non-certified documents show a yellow exclamation mark.
- AATL does not apply to multi-party signed documents or notarized documents.
If you are still unsure, contact Proof Support for help.
Related
Authenticating Documents with Certificates
The article emphasizes that signature fraud, particularly through the misuse of notary stamps or digital certificates, poses a significant threat to the authenticity and security of notarized documents, and introduces Proof's new Digital Certificate program designed to enhance the safety and trustworthiness of digital notarizations by securely assigning unique private keys to notaries to prevent forgery and tampering.
Certificate Policy
The Certificate Policy (CP) for the Proof public key infrastructure (PKI) system outlines procedural and operational requirements for all PKI Participants involved in requesting, issuing, managing, and validating digital certificates and time stamp tokens, adhering to IETF RFC 3647 and various industry standards such as WebTrust, CA/Browser Forum Baseline Requirements, and Adobe Approved Trust List, while specifying that it applies only to the public Proof PKI system and that the Proof Root CA R1 complies with CA/B Forum Baseline Requirements which take precedence in case of conflicts.
Digital Certificates Now Available
In March 2026, Proof introduced exclusive, rigorously audited digital certificates for notaries that meet WebTrust standards and are listed on Adobe's Authorized Trust List, providing a secure digital identity that digitally signs and stamps notarized documents with a visible green checkmark in Adobe Acrobat, preventing seal replication, enhancing trust, and ensuring remote online notarizations are more secure and traceable than traditional paper-based methods.
Proof Registration Practice Statement
The Proof Registration Practice Statement (RPS) outlines Proof's role as a Registration Authority (RA) operating under SSL.com's Certification Practice Statement (CP/CPS) to verify and manage digital certificate issuance in compliance with Adobe Approved Trust List requirements, detailing the responsibilities of PKI participants including SSL.com as the Certification Authority and Proof as the RA.
The Green Checkmark That Changed Everything
Proof has developed Proof Digital Certificates, a cryptographically secured notary credential system that, as the first platform on Adobe's Approved Trust List, enables online notarized documents to display a green checkmark verifying authenticity, ensures tamper-evidence through digital seals, and protects notary certificates with enterprise-grade hardware security modules to maintain trust and prevent fraud in digital notarizations.
What Is a Digital Certificate (Technically)?
A digital certificate, within the Public Key Infrastructure (PKI) framework, is a data structure containing a user's public key and identifying information, which is attached to a document signed with the user's private key to enable recipients to verify the signature's authenticity and the document's integrity through asymmetric cryptography.