SitelangINSTRUMENT OF COMPLIANCE · 2026 EDITION
The Dossier · SiteLang for European construction
ART. 01
The question
The question
When a worker is injured, can you prove they understood?
§ Issue
EU law requires safety that is understood — not merely instructions that were received.
§ Answer
A hashed legal record per worker, in their own language.
§ Retention
Up to 10 years of encrypted retention, aligned with your national requirement.
§ Liability
Criminal and civil liability in the event of an accident without proof.
ART. 02
The chain
The chain
Four steps between instruction and evidence.
Available in NL · FR · EN · DE · PL · RO · AR · TR · UA · +3
| No. | Step | What happens | Output |
|---|---|---|---|
| 01 | Send the briefing | SMS or WhatsApp to the site. No app to install. No account. | Send-id |
| 02 | Their own language | Automatically translated via DeepL: NL · FR · PL · RO · AR · TR · UA · 7 more. | i18n.json |
| 03 | Comprehension quiz | Reading and ticking a box is not proof. Passing a quiz is. | QuizResult |
| 04 | Legal record | PDF with SHA-256 hash, IP address, timestamp, QR verification. Retained 10 years. | LegalRecord |
ART. 03
The exhibit
The exhibit
A record built to hold up in court.
For each confirmation, SiteLang generates a PDF containing the full briefing text exactly as the worker read it in their own language, the quiz result, a SHA-256 hash, IP address, timestamp, and a QR code for verification.
- Hash function
- SHA-256 over the canonical briefing text + quiz answers
- Verification
- Publicly readable via /verify/{recordId}
- Retention
- Supabase Storage, AES-256, 10 years immutable
JURIDISCH BEWIJSSTUK · WELZIJNSWET ART. 17
Bewijs van begrip — Veiligheidsbriefing
SitelangWerknemer
Krzysztof Wojcik
Pools · ploeg Antwerpen-Noord
Briefing
Werken op hoogte — steigerinstructie
Codex Titel III · art. 5
Toets
5 / 5 correct · geslaagd
Begripstoets via DeepL · PL
Bevestigd
14 mei 2026 · 07:42 CET
IP 84.193.18.27 · BE
VERIFICATIE · scan om de echtheid van dit dossier te toetsen
sitelang.eu/verify/SL-2026-0F4A2C9B
sha256 · 14bd c2eb 9c88 1200 cbf3 09d7 aa02 5aca 9940 72e8 d119 dfc9 af89 382e a894 0c06
Werfleider
Preventieadviseur
ART. 04
Register
Register
The legal framework, encoded into every briefing.
SiteLang starts from the European framework and ties each briefing to its national implementation — Belgium shown below as an example.
N° 01EU Directive 89/391/EECFramework directive on safety & health. Workers must receive instructions in a form they understand — and the employer must be able to demonstrate it.
N° 02Welzijnswet · art. 17Workers' Well-being Act (1996, BE). Written safety instruction in a language the worker understands.
N° 03Codex Title III · art. 5Work at height (BE). Fall protection from 2 m. Content + confirmation required.
N° 04Codex Title V · ch. IIAsbestos (BE). Mandatory information and training on exposure.
N° 05Codex Title IX · art. 2Personal protection (BE). Understanding of PPE use must be demonstrable.
N° 06AREI · art. 4.1Electrical safety (BE). Workers must know and understand the hazards.
N° 07GDPR · art. 5Retention period. Encrypted storage, right of access.
ART. 05
Access
Access
Each month we admit a handful of construction firms to the private pilot.
SiteLang is a solo project. No demo call, no sales funnel. One short email is enough. If it's a good match, you get access that same week.