Digital Sealing for PDF Documents
Document seals establish trust in every document by providing verifiable proof of authenticity and integrity that remains intact throughout the document lifecycle. Document seals (also called e-seals or digital seals) act like a digital stamp on a document.
The Entrust document sealing solution with Signhost uses digital certificates and digital timestamping technology to cryptographically bind an organization’s identity to their digital documents and lock down the document to help prevent further editing.
Enterprises and trust service providers use Entrust Document Sealing to protect official records, automate document authentication, and establish verifiable proof of document integrity throughout the document lifecycle.
Document ownership and accountability
Verifiable proof of integrity
Reduced risk of fraud, forgery, and disputes
Product Highlights:
Establish Verifiable Document Ownership
Cryptographically bind your organization's identity to digital documents with trusted document seals that provide clear proof of ownership, authenticity, and accountability throughout the document lifecycle.
Protect Document Integrity and Reduce Fraud
Help prevent unauthorized document modifications with digital certificates and trusted timestamping technology that lock documents after sealing and provide verifiable proof that content has not been altered.
Create Long-Term Trust in Digital Records
Protect official records, contracts, and business documents with digital seals that provide enduring proof of authenticity and integrity, helping reduce disputes and strengthen confidence in digital transactions.
Key benefits
Verifiable Proof of Ownership and Authenticity
Digitally sealed documents with Entrust Signhost embed your legal entity’s exact name, verified by a trusted authority.
Trusted Timestamp Proving the Exact Date & Time of Sealing
Each sealed document is also timestamped. It lengthens the technical validity of the seal and helps prove the document’s existence from the timestamp’s date and time.
Advanced and Qualified Sealing Available
Entrust Signhost supports both advanced and qualified sealing + timestamping under the EU eIDAS Regulation.
Global Recognition
Our digital seals are generated using digital certificates issued by a Qualified Trust Service Provider listed under both the Adobe and EU trust lists.
Manual or API-automated process
You can manually seal documents using our web portal or fully automate the process using our REST API. Check out our API guide for sealing.
LTV-Enabled (Long-Term Validation) Seals
Our digital seals follow the PAdES long-term validation standard to optimize validation and archiving.
Follow the eIDAS Standard
The EU eIDAS Regulation provides a legal and technical framework for the generation and verification of digital seals, also referred to as electronic seals.
Entrust Signhost can generate advanced and digital seals as defined by eIDAS to help you align with eIDAS or to help you comply with an eIDAS sealing mandate.
Timestamping is always included in our seals. Our qualified seals automatically benefit from qualified timestamping.
Increasing the Reliability of e-Invoices in Portugal
Portugal’s 2026 Budget Bill requires all PDF e-invoices to include a qualified electronic signature starting in 2027, boosting the adoption of qualified seals. This enhances invoice authenticity, reduces fraud, and strengthens digital tax compliance while giving businesses a more secure, efficient invoicing process that benefits the entire economy.
Tell us all about your sealing needs! Our experts will be happy to help you find the right solution.