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Dropbox Sign and NOM 151 Compliance

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Dropbox Sign Support
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This article describes a feature available to Dropbox Sign Premium.

NOM 151, or Normativa 151, is a Mexican standard that guarantees the integrity of electronic documents. It provides a data retention certificate that verifies the document hasn't been altered after signing, confirming its integrity and reliability for any transaction.

How does NOM 151 work with Dropbox Sign?

Dropbox Sign integrates with eID Easy, a partner of Edicom, to support NOM 151 compliance for both Dropbox Sign web and API users in Mexico. This integration creates a secondary certificate, separate from the original signed document, that verifies its integrity according to NOM 151 regulations.
NOM 151 adds an extra layer of trust to electronically signed documents in Mexico, demonstrating that the document hasn’t been tampered with. By leveraging the integration between Dropbox Sign and eID Easy, users can confidently sign and share documents, knowing they comply with NOM 151 standards.

How to enable NOM 151

To allow team members to use NOM 151 when signing and sharing documents on hellosign.com:
  1. Log in to Dropbox Sign with your admin credentials.
  2. In the top right corner of your browser, click your initials.
  3. Select Admin console from the drop-down menu.
  4. Click Settings in the left sidebar.
  5. Click Signature requests in the left sidebar.
  6. Under the Signature request options section, toggle NOM 151 to on.
  7. Click Save settings.

How to send a signature request with NOM 151

To send a signature request with NOM 151, select the NOM 151 checkbox on the Add signers page when preparing your document, then send the signature request as normal. Learn more about sending signature requests.
Note: The signer will receive an email letting them know their signature is requested. Signature request reminder emails will be sent to the signer 3 and 7 days before the signature request expires.

How to validate a signed NOM 151 document

After a signature request is complete, you can manually download the signed NOM 151 certificate from Dropbox Sign and validate it on the third-party PCS World website, a third-party verification service. To do this:
  1. Log in to Dropbox Sign.
  2. Click Documents in the left sidebar.
  3. Hover over “⁝” (vertical ellipsis) next to the signature request you’d like to download the certificate for.
  4. Select NOM 151.
  5. Follow the prompts to download and validate the document and its certificate on the PCS World website.
Notes:
  • The NOM151 certificate doesn’t modify the original document.
  • The certificate is assigned a unique ID and is registered as a legal document in Mexico. 

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