Quantum CDS An Open Wynter company

Quantum CDS  ·  Software company  ·  An Open Wynter company

We build the software the future of business runs on.

Quantum CDS designs and builds systems on emerging technology. Cryptography built to outlast the quantum era. Ledgers that can prove their own history. Intelligence that shows its work. So the businesses we serve are ready before the future arrives.

Start a conversation What we build
Blueprint of a business built on emerging technology Four foundations, post-quantum security, verifiable ledgers, applied intelligence and operating infrastructure, feed one operating business. Fig. 01 — operating model Quantum CDS · 2026 01 · Post-quantum security 02 · Verifiable ledgers 03 · Applied intelligence 04 · Operating infrastructure The business that comes next
Built against
  • NIST FIPS 203
  • FIPS 204
  • FIPS 205
  • PCI DSS 4.0
  • SOC 2 Type II
  • ISO 27001
01 — Position

Most business software was built for the world as it was.

Payments that settle in days. Trust placed in a single database. Security that assumes today’s computers. Decisions made with no record of why. We build for the world that is arriving.

02 — What we build on

Four foundations. One operating business.

  1. 01

    Post-quantum security

    Encryption, signatures and key management designed to survive the machines that will break today’s. Algorithms are replaceable parts, not foundations.

    FIPS 203FIPS 204FIPS 205Hybrid by default
  2. 02

    Verifiable ledgers

    Financial records that carry their own proof, from settlement to audit. Digital assets, custody and reporting built on an immutable core.

    Double-entryImmutablePublicly verifiable
  3. 03

    Applied intelligence

    AI systems that cite their sources, decompose the work, and leave a trail a regulator can follow. Autonomy with an audit log.

    Agentic workflowsCitation integrityDecision trails
  4. 04

    Operating infrastructure

    Identity, billing, payments and logistics as one system rather than ten vendors. Multi-tenant from the first line, event-driven from the first record.

    Multi-rail paymentsMulti-tenantEvent-driven
03 — How we work

Architecture first. Then the build. Then we stay.

  1. Phase 01

    Architect

    A paid blueprint before any code. Threat model, data model, standards map, and a plan that survives contact with the real system.

  2. Phase 02

    Build

    Delivered in milestones you can inspect. Every release reviewed against the blueprint, every decision recorded.

  3. Phase 03

    Operate

    We run what we build alongside you, and keep it current as the standards, rails and models underneath it change.

04 — Recent work

Systems we have designed and built.

  • Custody, settlement and proof-of-reserves for digital assetsFinancial services
  • Post-quantum key registries and hybrid transaction signingDigital assets
  • Payment orchestration across cards, transfers and stablecoinsPayments
  • Operations platforms for multi-location and franchise businessesOperations
  • Regulatory tracking and reporting tools for professional firmsCompliance
  • Autonomous agent workflows with full decision audit trailsApplied AI
05 — Start a conversation

The future of business is being built now.

Tell us what your business needs to become. We will tell you, plainly, what it will take to build. Replies come from a person, usually within one business day.