New ZI² Books. Books sold by the people who made them. Zenith Intelligence Technologies

Software we build, run and stand behind.

Eight products on one platform. Scheduling, signatures, payments, deliverability and the email attestation layer underneath them. Every one runs on our own infrastructure.

See the platform Check your domain
8Products live
32Certified domains
Ed25519Signature scheme
<0.2 msSigning overhead
The ZI² Books mark
New on the platform

ZI² Books

Books sold by the people who made them. Every edition comes straight from its publisher, and the whole price stays with the press.

  • Sealed editions, read anywhereRead in the browser, or in the ZI² Books app on iPhone, iPad, Android and Mac. Download a book once and it opens offline.
  • No password to rememberType the email you bought with. A one-time link signs you in and your library fills itself.
  • Open to any pressA publisher can start an imprint, list its editions and sell them direct, print beside digital.
Visit the bookstore For publishers
01

The platform

Each module stands on its own. They share one identity layer, one billing path and one audit trail.

ZI-01 · OperationsCalendar SuiteScheduling, booking pages and team operations for organisations that run on appointments.ZI-02 · AgreementsZI² SignElectronic signature with a tamper-evident record of every step and a certificate anyone can verify.ZI-03 · DeliverabilityZI² VerifyEmail list validation and deliverability scoring, run on our own infrastructure.ZI-04 · ReadingZI² Books NewA bookstore where every edition comes from its publisher, sealed to read on any device.ZI-05 · BillingPaidSealInvoicing and payment pages for small operators.ZI-06 · PaymentsWalletUpPayment processing across more than twenty methods.ZI-07 · Public safetyCaseTraceEdge video analytics for public safety and investigations.ZI-08 · CommerceFLORALLWest African floral marketplace with a plant advisor.
02 · Patent pending

ZI² Certified

SPF, DKIM and DMARC answer whether a domain is authorised. None of them answer whether this server sent the message. On a shared host, that gap is how convincing spoofs get through.

Signature

Ed25519, not a score

Every server holds a keypair. Every outbound message is signed. A receiver checks the signature and gets one of two answers. There is no confidence percentage to argue with.

Distribution

One DNS record

The public key sits in a TXT record beside your DKIM key. Same plane, no new infrastructure, nothing for a mail administrator to learn.

Check a domain How it works
03

How we work

Owned, not rented

The platform runs on infrastructure we control. Customer data stays on it.

Proven, then shipped

Changes are tested against a real database and verified on production before anyone calls them done.

Built to be replaced

Modules are separable. Nothing here locks a customer into the rest of it.

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