0DATA
Proof of diligence · industrial OT

Your machines compliant — proven, sealed, continuously.

Your principal has sent you its NIS2 questionnaire. The IT part, you have covered. The OT part — PLCs, production lines, manufacturing equipment — you have no answer. The OT Diligence Dossier provides it: a passive capture of your fleet, a timestamped and sealed event journal, and a signed monthly dossier that you hold up to your principal, your insurer and your auditor.

Sealed journal · SPINA
The method

Continuous proof, without touching production

01

Passive listening

A box placed in listening mode on your production network. Zero agents, zero impact, nothing is touched.

02

Timestamped and sealed event journal

SPINA seals every event in a verifiable chain — Merkle, SHA-256, timestamped.

03

Qualified timestamping

eIDAS anchoring with a qualified trust service provider (QTSP). The proof holds up in court.

04

Monthly dossier

The deliverable: a signed dossier that ticks the boxes of the NIS2 questionnaire, ready to present.

Use cases

What you can do

01

Answer your principal

You receive the NIS2 questionnaire with a deadline. The dossier answers it, case by case, for the OT scope.

02

Reassure the insurer

Your insurer requires proof of reasonable diligence before paying out. The timestamped journal provides it.

03

Prepare for the audit

The auditor wants to see continuity, not an annual snapshot. You show a sealed history.

Specifications

The dossier in numbers

Modbus · OPC-UA · PROFINET · S7 · BACnet · EtherNet/IP · DNP3
Detected protocols
passive · zero agents
Capture
1 day · zero impact
Installation
Merkle · SHA-256
Journal
eIDAS · QTSP
Timestamping
monthly · signed
Deliverable
on site · or remote
Deployment
one line · one site
Scope
Protocol

Three steps. Proof verifiable by a third party.

01

Install

You receive the box and plug it into the mirror port of your production network. One day, zero agents, zero impact on the lines.

connected box · mirror port · passive listening ✓
02

Capture

The SPINA journal fills continuously. Every piece of equipment is identified by signature, every event sealed — Merkle, SHA-256, timestamped.

14:02:17 OT-017 MODBUS READ_HOLDING sealed #4a81f2
14:02:18 OT-023 S7 CYCLE_DATA sealed #7c10a9
14:02:19 OT-017 OPC-UA BROWSE sealed #d03e11
03

Present

Every month, a signed and timestamped dossier arrives. You hold it up to your principal, your insurer, your auditor.

dossier september-2026.pdf
journal 3 481 922 events ✓
timestamping QTSP qualified · eIDAS ✓
signature valid · verifiable by a third party ✓
The offer

The OT Diligence Dossier

Proof of diligence, not a promise

0DATA is not a certifier. We are your continuous proof infrastructure: we capture, seal and return — you remain in control of your compliance.

  • Box in passive listening, installed in one day
  • OT equipment inventory by signature
  • SPINA journal, timestamped and sealed, anchored via eIDAS
  • Signed monthly dossier, ready for the principal and the insurer
15–25 k€ commissioning
+ 2–4 k€ / month / site
40–70 k€ in the first year
below the tender threshold
Start a sealed diagnostic
Your compliance is proven. Not promised.

The document that saves your contract.

Before your principal, your insurer and your auditor.

Start a sealed diagnostic