ZI² Books
Zenith Intelligence Technologies
We build enterprise software and run it ourselves. Every product on this site is in production, on infrastructure we own, serving real customers.
What we build
Operations software
Scheduling, booking, documents, signatures and invoicing for organisations that run on appointments and agreements. Multi-tenant, isolated at the database.
Payments and commerce
Payment processing across more than twenty methods, invoicing for small operators, and a marketplace serving West Africa.
Mail infrastructure
Deliverability scoring, inbound triage, and the server-level attestation layer that proves which machine sent a message.
Applied vision
Edge video analytics for public safety and investigations, running close to the camera rather than in someone else's cloud.
How we hold ourselves
Four commitments that decide how the software gets built.
Tenants are separated by the database
Row-level security is forced at the table, not trusted to a query. An application bug cannot show one customer another customer's data.
Records are tamper-evident
Signature trails and audit logs are hash-chained. A changed row breaks the chain and says so.
New enforcement ships switched off
Anything that can block a customer arrives behind a switch that defaults to off, and gets turned on once it has been watched.
Claims are measured
Numbers on this site come from production or a test we ran. Where something is an estimate, we say so.
Standards and IP
Patent pending
A United States provisional application covering server-level cryptographic email attestation.
Internet draft
The attestation protocol is written up as an internet draft so others can implement it.
Live since April 2026
Signing and verification have run continuously on our mail estate since 19 April 2026.
Talk to us
Questions about the platform, the attestation protocol, or working together.