OpenOTP Electronic Signature


OpenOTP Electronic Signature
your new e-signing solution!

Working remotely has become the new normal.
Companies are adapting & looking for the
best comprehensive e-signature tool.

Integrations & APIs

e-Signatures, Seals & Approvals via simple APIs


e-Sign Documents
via Nextcloud

Nextcloud Plugin

RCDevs’ OpenOTP Security Suite combined with OpenOTP Electronic Signature
and our Nextcloud plugin allow you to sign and/or seal documents within your organization.
Workflow requests are received through Push Notifications on your mobile or emailed QR codes. Once the document is signed, it can be found in Nextcloud.

Send e-signature
requests via Email

OpenOTP Email Gateway

Secure document signing using your email system as a signature platform, without needing a user portal. As easy as sending an attachment to a colleague via email!
RCDevs’ OpenOTP Security Suite combined with OpenOTP Electronic Signature extends your email capabilities.
Workflow requests are received through Push Notifications on your mobile or emailed QR codes. Signed documents are received directly in your email inbox.


Integrate in existing
processes & workflows
via simple APIs

Enterprise EDM & CRM

Enterprise Electronic Document Management systems (EDMs) and Customer Relationship Management systems (CRMs) are widely used in SMEs and large corporations.
Extend your Sharepoint, Documentum or Alfresco functionalities with OpenOTP Electronic Signature via our simple integration APIs.
Use your own infrastructure systems and domain users to request document signatures/approvals directly with your colleagues.

E-sign with users
outside your AD/LDAP
via YumiSign

Yumisign – Part of RCDevs Ecosystem

Need to request e-signatures outside of your network? Integrate YumiSign with OpenOTP E-Signature to sign with external (non domain) users. Combining internal & external network signature requests is possible via APIs.


A Complete, User Friendly, Mobile
e-Signature Ecosystem

Document & Transaction Approvals
Standard e-Signatures
Advanced e-Signatures
Qualified e-Signatures
Sealing & Time-stamping
Unique Signatures
What You See Is What You Sign
By receiving and reviewing the document on your phone, you are assured you are signing the correct document.
The sealing & time-stamping of the documents assures you the documents are not tampered with.
Advanced Electronic Signatures
The Advanced Signing relies on cryptographic metadata and unique handwritten user signatures, as per eIDAS requirements.
The user signs with his finger (or a stylus) on the mobile device. The unique signature is returned in a cryptographic form as part of the chain of digital data.
A signature must be unique. Any copy will be refused by the back-end.
The signature is graphically applied to the original document and cryptographically sealed with HSMs.
Qualified Electronic Signatures
OpenOTP supports Qualified Signatures with eIDAS-Certified signing devices such as European Electronic ID cards or LuxTrust Smart Cards.
Qualified electronic signatures are done directly by applying your eIDAS-Certified device on your mobile phone when prompted (if your card is NFC capable). If your eIDAS device is not NFC capable, you will need to use a card reader to sign (you can purchase the card reader in our store).
Electronic signatures appear as EUTL-trusted signatures in Acrobat Reader.
The WYSIWYS (What You See Is What You Sign) concept is respected. The document you review and sign is the actual & final document. Once signed, it is time-stamped and sealed with HSMs.
Legally Binding
OpenOTP Electronic Signature is recognized by all jurisdictions and complies with European regulations (eIDAS).
Authenticated Digital Identities
OpenOTP Electronic Signature directly integrates with your AD/LDAP users.
Employees can send signature requests to themselves or their colleagues using our email gateway, NextCloud or through any other system via our simple APIs.

The OpenOTP Experience

Test OpenOTP’s MFA with our Free Online Demo accounts!
Also check out our tutorial & demo videos!