Electronic Signature Platform

Secure electronic signatures, built for compliance and designed for people.

Qoobiss Signature enables secure, tamper-proof document signing for regulated and non-regulated industries. From simple and advanced electronic signatures to qualified electronic signatures (QES) under eIDAS, every document is encrypted, authenticated, and backed by a complete audit trail.

Signing Flow
QES Applied
Document Ready
Document uploaded, parsed and prepared for signing.
Tamper-proof SHA-256
Signer Authenticates
Identity verified via OTP, biometrics, or eIDAS-compliant method.
AM
Ana Moraru
Verified · OTP + Face Match
Identity Confirmed eIDAS
QES Applied
Qualified Electronic Signature sealed with cryptographic certificate and full audit trail generated.
Certificate Sealed
a3f8…d92c · X.509 · 2048-bit RSA
QES
Audit Trail GDPR Legally Binding
Signing Flow
QES Applied
Document Ready
Document uploaded, parsed and prepared for signing.
Tamper-proof SHA-256
Signer Authenticates
Identity verified via OTP, biometrics, or eIDAS-compliant method.
AM
Ana Moraru
Verified · OTP + Face Match
Identity Confirmed eIDAS
QES Applied
Qualified Electronic Signature sealed with cryptographic certificate and full audit trail generated.
Certificate Sealed
a3f8…d92c · X.509 · 2048-bit RSA
QES
Audit Trail GDPR Legally Binding

Paper slows you down. Weak verification exposes you to risk.

Faster onboarding.
Less fraud.
Lower costs.

Fully aligned with eIDAS, GDPR, and EU Trusted List standards

Faster onboarding.
Less fraud.
Lower costs.

THE PROBLEM

Traditional or poorly implemented digital signing creates friction and compliance gaps.

Manual document exchanges delay onboarding

Weak identity assurance increases forgery risk

Separate tools for each signature level add complexity

Physical tokens and hardware complicate QES rollout

Incomplete audit logs fail regulatory scrutiny

THE SOLUTION

Qoobiss delivers one unified electronic signature platform, from simple consent to fully qualified electronic signatures.

Simple, advanced, and qualified electronic signatures (SES, AES, QES) through a single API and web component

OTP-based authentication and cryptographic sealing

Automatic qualified certificate issuance (no physical tokens)

Secure key management via a QSCD (Qualified Signature Creation Device)

Complete audit trail with timestamp, IP, and verification logs

HOW IT WORKS

Secure Electronic Signatures. Seamlessly Integrated.

Upload or Send Document

Submit documents via REST API or embed signing directly into your app using our Web Component.

Authenticate the Signer

Depending on the signature type, signers complete OTP verification or identity verification before signing.

Apply the Signature

Once signed, the document is cryptographically sealed to ensure integrity and prevent any later modification.

Generate Audit Trail

Every action is logged, including timestamps, IP addresses, and authentication steps, creating an audit-ready record.

STEP 01
Upload or Send Document
Submit documents via REST API or embed signing directly into your app using our Web Component.
POST /api/sign/document
{ file: "contract.pdf" }
REST API Web Component

For advanced and qualified electronic signatures, additional verification layers and certificate issuance are applied in accordance with eIDAS requirements.

Upload or Send Document

Submit documents via REST API or embed signing directly into your app using our Web Component.

Authenticate the Signer

Depending on the signature type, users may complete OTP verification or identity validation before signing.

Apply the Signature

The document is cryptographically sealed to prevent tampering.

Generate Audit Trail

Every action is logged — including timestamps, IP addresses, and authentication steps — creating an audit-ready record.

STEP 01
Upload or Send Document
Submit documents via REST API or embed signing directly into your app using our Web Component.
POST /api/sign/document
{ file: "contract.pdf" }
REST API Web Component

Upload or Send Document

Submit documents via REST API or embed signing directly into your app using our Web Component.

Authenticate the Signer

Depending on the signature type, users may complete OTP verification or identity validation before signing.

Apply the Signature

The document is cryptographically sealed to prevent tampering.

Generate Audit Trail

Every action is logged — including timestamps, IP addresses, and authentication steps — creating an audit-ready record.

STEP 01
Upload or Send Document
Submit documents via REST API or embed signing directly into your app using our Web Component.
POST /api/sign/document
{ file: "contract.pdf" }
REST API Web Component

SIGNATURE LEVELS

One Electronic Signature Solution. Multiple Signature Levels.

One Electronic Signature Solution. Multiple Signature Levels.

Qoobiss Signature supports all three levels of electronic signature under eIDAS, from simple consent-based signing to fully qualified signatures that are legally equivalent to handwritten ones. Each level is designed for specific operational and regulatory requirements, all within one unified architecture.

Qoobiss Signature supports all three levels of electronic signature under eIDAS, from simple consent-based signing to fully qualified signatures that are legally equivalent to handwritten ones. Each level is designed for specific operational and regulatory requirements, all within one unified architecture.

Simple Electronic Signature (SES)

SES captures user intent and consent without mandatory identity verification, making it suitable for low-risk digital processes.

  • No mandatory identity verification

  • Digital audit trail (timestamp, IP address, consent log)

  • Lightweight implementation via API or Web Component

  • GDPR-compliant consent capture

Typical Use Cases

  • Business contracts

  • Credit or leasing applications

  • HR documentation

  • Regulated customer onboarding

Advanced Electronic Signature (AES)

AES verifies the identity of the signer and cryptographically binds the signature to the document, ensuring integrity and traceability.

  • OTP-based authentication

  • Cryptographic document sealing

  • Audit-ready metadata (phone, OTP validation, IP, timestamp)

  • Legally binding across EU member states

  • No external hardware required

Typical Use Cases

  • Business contracts

  • Credit or leasing applications

  • HR documentation

  • Regulated customer onboarding

Qualified Electronic Signature (QES)

QES is legally equivalent to a handwritten signature and is created using a qualified certificate issued after remote identity verification.

  • Remote identity verification

  • Qualified certificate issuance

  • Secure key management via QSCD

  • Tamper-proof document sealing

  • Full EU legal equivalence

Typical Use Cases

  • Financial and insurance contracts

  • Employment agreements

  • Government filings

  • Real estate transactions

  • Cross-border agreements

All signature levels are supported through a single REST API and JavaScript Web Component, ensuring consistent integration and centralized audit control.

Compliance & Legal Validity

eIDAS Electronic Signatures, Built to Withstand Regulatory Scrutiny

Qoobiss Signature is fully aligned with eIDAS, GDPR, and EU Trusted List standards. Every signature level is admissible as evidence in court, and qualified electronic signatures carry the same legal effect as a handwritten signature across the EU.

Tamper-evident cryptographic sealing

Complete audit trails with authentication logs

Qualified certificate issuance for QES

Secure key management via QSCD

Cross-border recognition within the European Union

eIDAS
EU regulation
GDPR
Data protection
EU Trust List
TSP compliant
QES
Qualified sig
Court Valid
Legally binding
QSCD
Key management
Tamper-evident cryptographic sealing
Complete audit trails with authentication logs
Qualified certificate issuance for QES
Secure key management via QSCD
Cross-border recognition within the European Union
eIDAS
EU regulation
GDPR
Data protection
EU Trust List
TSP compliant
QES
Qualified sig
Court Valid
Legally binding
QSCD
Key management
Tamper-evident cryptographic sealing
Complete audit trails with authentication logs
Qualified certificate issuance for QES
Secure key management via QSCD
Cross-border recognition within the European Union
eIDAS
EU regulation
GDPR
Data protection
EU Trust List
TSP compliant
QES
Qualified sig
Court Valid
Legally binding
QSCD
Key management
Tamper-evident cryptographic sealing
Complete audit trails with authentication logs
Qualified certificate issuance for QES
Secure key management via QSCD
Cross-border recognition within the European Union

Frequently Asked Questions

Frequently Asked Questions

Are Qoobiss electronic signatures legally binding?

What types of electronic signatures does Qoobiss support?

How does the signing process work?

How can I integrate Qoobiss Signature into my application?

What security and compliance features are included?

What are typical use cases for each signature type?

How does Electronic Signature integrate with other Qoobiss products?

Secure Electronic Signature Software

Qoobiss Signature is electronic signature software that lets people sign documents online quickly and securely, on any device. It supports digital workflows in both regulated and non-regulated industries, and every signed document is cryptographically sealed and backed by a complete audit trail. As a single electronic signature solution, it covers all three levels defined by the EU's eIDAS regulation: simple, advanced, and qualified electronic signatures.

Who Qoobiss Signature Is For

Qoobiss Signature is built for legal and compliance teams, regulated businesses, and product or operations leaders who need digital signing that holds up to legal and regulatory requirements. Controlled authentication and cryptographic integrity make every signature tamper-evident and reduce the risk of forgery.

When Is an Electronic Signature Legally Binding?

Under eIDAS, an electronic signature can't be denied legal effect just because it's electronic. It's generally enforceable when:

  • The signer intends to sign

  • All parties consent to signing electronically

  • Identity verification is completed where the signature level requires it

  • The signature meets the laws of the jurisdiction where it's used

Electronic signatures are widely recognized, which makes them a simple way to streamline processes and cut paperwork. The level you choose determines how much legal weight the signature carries.

Simple, Advanced, and Qualified Electronic Signatures

A secure electronic signature can take different forms, each suited to a different level of risk. Qoobiss Signature supports all three:

  • Simple electronic signature (SES): The basic form of e-signature. It doesn't require identity verification and captures the signer's intent and consent in low-risk scenarios, such as accepting terms and conditions, sales forms, or acknowledgements.

  • Advanced electronic signature (AES): Uniquely linked to the signer and capable of identifying them, typically through OTP verification or controlled access codes. Any later change to the document can be detected. With stronger identity assurance, AES suits loan applications, B2B agreements, employment documents, and NDAs.

  • Qualified electronic signature (QES): The highest level under eIDAS, and the only one legally equivalent to a handwritten signature in every EU member state. It's created with a qualified certificate, issued by a Qualified Trust Service Provider after remote identity verification, inside a Qualified Signature Creation Device (QSCD). QES is used for high-risk or legally sensitive documents that must withstand regulatory scrutiny or legal challenges.

How the Electronic Signature Platform Works

Signing works on any device and can be embedded in your own application. Every signature follows the same four steps:

  1. Submit the document: The document is prepared and submitted through the platform via REST API or Web Component.

  2. Authenticate the signer: Depending on the signature level, the signer confirms intent with OTP verification or completes full identity verification.

  3. Seal the document: Once signed, the document is cryptographically sealed, so any later change is detectable.

  4. Generate the audit trail: Every step is logged, including timestamps and IP addresses.

For qualified electronic signatures, a qualified certificate is issued after identity verification, producing a signature that's legally equivalent to a handwritten one under eIDAS.

Key Capabilities of Qoobiss Signature

  • All three signature levels: SES, AES, and QES from a single platform

  • Multi-device signing: Sign from desktop, tablet, or mobile

  • Complete audit trails: Full logs of every action, including IP addresses and timestamps

  • Embedded signing: Add signing directly to your app or website

  • Document management: Submit, track, and retrieve signed documents in one place

  • No hardware tokens: Qualified certificates are issued remotely, with keys managed via QSCD

eIDAS Compliance and Legal Validity

Every signature level is admissible as evidence in court, and qualified electronic signatures carry the same legal effect as handwritten ones across the EU. Qoobiss Signature is aligned with eIDAS, GDPR, and EU Trusted List standards. Complete audit trails and cryptographic sealing protect data integrity and give you the evidence you need if a signature is ever challenged.

API Integration and Scalability

Qoobiss Signature offers two integration methods. Both support every signature level, from a simple signature to QES.

  • REST API: Automates the entire workflow, from submitting documents for signature to retrieving completed ones and managing access tokens for future signing sessions.

  • JavaScript Web Component: An embeddable signing interface for your existing web application. It handles OTP verification, document signing, and confirmation, and you can customize it through configuration settings and CSS.

The platform scales from a few signatures a month to thousands a day, handling growing volumes of users and documents as your business grows.

How Qoobiss Signature Fits into the Qoobiss Ecosystem

Qoobiss offers a modular compliance ecosystem covering digital onboarding, identity verification, and AML screening. Qoobiss Signature works with:

  • ONTRACE: Qoobiss's identity verification software and complete KYC solution. ONTRACE verifies the signer's identity before signing, so every signature is tied to a verified person.

  • ORIGIN: Qoobiss's platform for automating digital onboarding workflows. When onboarding requires a signature, Qoobiss Signature plugs straight into the journey.

  • OMNICHECK: Adds AML screening, so identity verification, compliance checks, and signing happen in one automated flow.

It's used across regulated industries such as banking and lending, insurance, and fintech. To learn how e-signatures compare with other signing methods, read our guide to digital signatures.

Request a demo to see how Qoobiss Signature delivers secure, legally valid document signing for your business.

Why Qoobiss

Book a 30-minute KYC verification demo → sales@qoobiss.com

Expo Business Park

54A Av. Popisteanu Street, 1st floor

Bucharest, Romania

© Qoobiss 2026. All rights reserved

Expo Business Park

54A Av. Popisteanu Street, 1st floor

Bucharest, Romania

© Qoobiss 2026. All rights reserved

Expo Business Park

54A Av. Popisteanu Street, 1st floor

Bucharest, Romania

© Qoobiss 2026. All rights reserved