What SignQuantum does

SignQuantum (legal entity Quantum Software Solutions W.L.L.) is a privately held software company that builds post-quantum cryptography infrastructure for digital signatures. Its sole product is a self-hosted e-signature add-on that automatically cross-signs documents — produced by incumbent platforms such as DocuSign, Adobe Acrobat Sign, Dropbox Sign, Signaturit Group, and PandaDoc — with NIST's recommended FIPS 204 ML-DSA algorithm (based on CRYSTALS-DILITHIUM), and records document hashes on the QAN Enterprise Blockchain for immutable, quantum-resistant timestamping. The architecture is designed to defend digitally signed business-critical documents (loan agreements, insurance policies, IP waivers, government contracts, supply-chain agreements) against the so-called "time travel" quantum attack in which future quantum computers could retroactively modify the contents or timestamps of currently valid signatures.

The platform runs on customer infrastructure via Kubernetes, Docker Swarm, or Virtual Machines, bundled with S3-compatible storage, databases, email, and logging components. This self-hosted posture lets buyers retain custody of cryptographic keys — a positioning aligned with banking, insurance, pharma/IP, government, and manufacturing/supply chain buyers, all five listed as primary target verticals with specific use cases such as mortgage agreements, life/health insurance policies, NDAs, defence procurement, and quality-standards documentation.

Revenue is generated through enterprise software subscription licensing with quote-based annual pricing; prospective buyers are routed to a website form that captures firmographic and usage inputs (company name, email, e-signature provider, annual signing volume). Distribution combines direct enterprise sales with channel partnerships; Itti was appointed in 2025 as the exclusive Latin American distributor, representing the first named regional partner. The company operates with 11–50 employees, holds a registered "SignQuantum" trademark, claims GDPR compliance, and has no disclosed venture funding, no publicly named customers, and a marketing footprint limited to its official website.

Name

SignQuantum

Legal name

Quantum Software Solutions W.L.L.

Website

https://signquantum.com

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

SignQuantum (Quantum Software Solutions W.L.L.) is a privately held vendor of a self-hosted post-quantum cryptography add-on that cross-signs documents from e-signature platforms using NIST FIPS 204 ML-DSA and timestamps them on QAN Enterprise Blockchain, serving regulated enterprises in banking, insurance, government, pharma/IP, and manufacturing.

Ownership category

akta.pro rank

Product category

Post-Quantum Cryptography Software

akta.pro primary industry

Quantum-Safe Identity, Authentication & Digital Signatures (HDAGAGAG)

akta.pro secondary industries

Quantum-Safe Cryptographic Algorithms & Protocols (PQC) (HDAGAGAC), Quantum Cryptography & Post-Quantum/Quantum-Safe Security Research (HDAGAMAI), Quantum Standards, Compliance & Policy Advisory (HDAGALAK)

Keywords

• Post-quantum cryptography
• Digital signature security
• E-signature add-on
• Quantum-resistant blockchain
• Document timestamping

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Operations

Revenue model

1. Software License/Subscription: Enterprise software solution sold as self-hosted add-on for e-signature platforms. Revenue appears to be generated through software licensing for post-quantum security protection of digital signatures. Quote-based pricing suggests enterprise licensing model.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels1 record

Core offering

SignQuantum sells a self-hosted post-quantum e-signature add-on that automatically cross-signs documents already signed through standard e-signature providers (DocuSign, Adobe Acrobat Sign, Dropbox Sign, PandaDoc, Signaturit Group) with NIST's FIPS 204 ML-DSA (CRYSTALS-DILITHIUM) post-quantum algorithm, and records document hashes on the quantum-resistant QAN Enterprise Blockchain for tamper-evident timestamping. The product is targeted at organizations whose digitally signed contracts, policies, and agreements must remain authentic against future quantum-enabled tampering.

Product overview

SignQuantum offers a single unified product: a self-hosted post-quantum e-signature add-on. The core product integrates with existing e-signature platforms (DocuSign, Adobe Acrobat Sign, Dropbox Sign, Signaturit Group, PandaDoc) to automatically cross-sign documents with NIST's post-quantum cryptography standard (FIPS 204 ML-DSA) and record timestamps on the quantum-resistant QAN Enterprise Blockchain. The solution requires no changes to existing workflows and can be deployed on Kubernetes, Docker Swarm, or Virtual Machines.

Differentiator

Problem solved

Functional benefit

Products and services

• SignQuantum Post-Quantum E-Signature Add-on Self-hosted software add-on for enterprise e-signature platforms that automatically cross-signs documents signed with standard algorithms (RSA, ECC) using NIST's FIPS 204 ML-DSA post-quantum algorithm and records document hashes on the quantum-resistant QAN Enterprise Blockchain for tamper-evident timestamping. Integrates with DocuSign, Adobe Acrobat Sign, Dropbox Sign, PandaDoc, and Signaturit Group without requiring workflow changes. Sold to organizations whose digitally signed contracts, policies, and IP agreements must remain authentic against future quantum-enabled tampering.

Quantifiable outcome

• Documents signed today are vulnerable to retroactive modification by quantum computers
• +2 more outcomes

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

AI capability2 records

Feature5 records

Partnerships

One partnership is on record.

• QANplatformcoreTechnology or IntegrationSignQuantum integrates with and runs on QAN Enterprise Blockchain, a quantum-resistant blockchain platform. Document hashes are uploaded to the QAN Enterprise Blockchain for immutable timestamping. SignQuantum and QAN Enterprise Blockchain can be self-hosted on customer infrastructure (Kubernetes, Docker Swarm, or VMs). The partnership provides the core quantum-resistant blockchain technology layer for SignQuantum's timestamping capabilities.

Recent moves4 records

Expansion highlights5 records

Broad incumbents

• DigiCert: Large incumbent PKI and digital certificate authority with explicit post-quantum cryptography initiatives (PQC certificates and signing). Comparable to SignQuantum in targeting digital signature use cases for regulated enterprises, but at much greater scale and with broader portfolio.
• DocuSign: Market-leading e-signature platform and SignQuantum's primary integration partner. Comparable as the underlying signing infrastructure that SignQuantum cross-signs, and a potential competitive threat if DocuSign ships native post-quantum signing.
• Adobe Acrobat Sign: Major enterprise e-signature platform integrated with SignQuantum. Comparable in addressing digital signing workflows for regulated enterprises, with Adobe's broader Document Cloud portfolio making it a potential future competitor in post-quantum signing.
• Entrust: Established PKI, digital signing, and identity vendor with PQC roadmap and post-quantum-ready HSMs. Overlaps with SignQuantum on digital signature and certificate use cases for banks and governments, though Entrust is a broad incumbent rather than a PQC-only specialist.

Direct peers

• PQShield: UK-based post-quantum cryptography company providing PQC software and IP for digital signatures, key encapsulation, and secure boot. Like SignQuantum, PQShield targets NIST-standardized PQC algorithms and sells to enterprise and government customers preparing for the post-quantum transition.
• ISARA Corporation: Commercial PQC security provider offering quantum-safe cryptographic libraries and integration tooling for PKI, digital signatures, and certificates. Directly comparable to SignQuantum as a NIST-aligned PQC vendor targeting enterprise and public-sector signature use cases.
• Post-Quantum: Post-quantum cryptography and identity solutions provider focused on quantum-safe communications, authentication, and signing. Operates in the same NIST-PQC-aligned enterprise security niche as SignQuantum, with overlapping buyer segments in finance and government.
• Crypto4A: Provider of quantum-safe hardware security modules (HSMs) and cryptographic infrastructure for enterprise and government. Comparable to SignQuantum as a post-quantum-ready security vendor selling to regulated buyers who need quantum-resistant key and signature management.

Emerging players

• Quantum Xchange: Quantum-safe networking and key management company focused on data-in-transit protection using PQC and quantum key distribution. Adjacent peer to SignQuantum in the broader quantum-safe enterprise security market with overlapping regulated-buyer profile.

Others

• QANplatform: Quantum-resistant blockchain platform that provides the timestamping backbone for SignQuantum. Adjacent ecosystem peer rather than a competitor, but a critical technology partner whose roadmap directly affects SignQuantum's combined signature+timestamp value proposition.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SignQuantum