# Verify Document Signature - Verifiable Health Link v0.0.2-current

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **Verify Document Signature**

## Requirements: Verify Document Signature 

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| :--- | :--- |
| *Official URL*:https://profiles.ihe.net/ITI/VHL/Requirements/VerifyDocumentSignature | *Version*:0.0.2-current |
| Active as of 2026-03-12 | *Computable Name*:VerifyDocumentSignature |

 
The [VHL Receiver](ActorDefinition-VHLReceiver.md), upon receiving a digitally signed health document from a [VHL Sharer](ActorDefinition-VHLSharer.md), MAY verify the document's digital signature using previously retrieved PKI material. 
This verification process confirms the authenticity, integrity, and provenance of the document independently of the Verified Health Link (VHL) itself. 
The public key used for this verification MAY: 
* Originate from a different trust network than the one used to validate the VHL
* Be unrelated to the key used to validate the VHL signature
 
Implementers SHOULD consult cross-profile guidance regarding interoperability with the [IHE Document Digital Signature (DSG) profile](https://profiles.ihe.net/ITI/TF/Volume1/ch-37.html), particularly in cases where additional attestation, long-term non-repudiation, or multi-party signatures are involved. 

* Statements: Contact Email
  * Steps in the requirement:1. ** Extract Signature and Key ID **:Upon receipt of a digitally signed health document, extract signature, key id, and participant code.
1. ** Lookup DSC **:Lookup Document Signing Certificate (DSC) public key by key id and participant code
1. ** Verify Signature **:Verify signature using the public key: No contact email has been registered.
* Statements: Jurisdiction
  * Steps in the requirement:1. ** Extract Signature and Key ID **:Upon receipt of a digitally signed health document, extract signature, key id, and participant code.
1. ** Lookup DSC **:Lookup Document Signing Certificate (DSC) public key by key id and participant code
1. ** Verify Signature **:Verify signature using the public key: 
* Statements: Derived from
  * Steps in the requirement:1. ** Extract Signature and Key ID **:Upon receipt of a digitally signed health document, extract signature, key id, and participant code.
1. ** Lookup DSC **:Lookup Document Signing Certificate (DSC) public key by key id and participant code
1. ** Verify Signature **:Verify signature using the public key: This requirement is not derived from another requriement.
* Statements: Derivatives
  * Steps in the requirement:1. ** Extract Signature and Key ID **:Upon receipt of a digitally signed health document, extract signature, key id, and participant code.
1. ** Lookup DSC **:Lookup Document Signing Certificate (DSC) public key by key id and participant code
1. ** Verify Signature **:Verify signature using the public key: This requirement has the following derivatives:
* Statements: Participating Actors
  * Steps in the requirement:1. ** Extract Signature and Key ID **:Upon receipt of a digitally signed health document, extract signature, key id, and participant code.
1. ** Lookup DSC **:Lookup Document Signing Certificate (DSC) public key by key id and participant code
1. ** Verify Signature **:Verify signature using the public key: * [VHL Receiver](ActorDefinition-VHLReceiver.md)


