Etched GT — The Digital Golden Thread for Building Safety Act compliance.
The Digital Golden Thread, done properly — a tamper-proof chain of evidence that protects dutyholders the Building Safety Act now holds personally accountable.
The Golden Thread is now a legal obligation — but the industry isn't set up to deliver it.
The BSA requires information that is digital, accurate, current and secure. Today, most projects run on email threads, SharePoint folders and good intentions.
Scattered across 14 tools
Drawings in BIM, approvals in email, photos on phones, sign-offs on paper. No single source of truth — and no way to prove it on demand.
Gateway 2 delays burning weeks
The BSR rejects submissions that can't evidence competence, change control or the Fire & Emergency File. Every week of delay costs six figures.
Personal, criminal liability
Under the Building Safety Act 2022, named dutyholders carry the can. SharePoint folders don't stand up in court — chains of custody do.
Nothing is tamper-proof
Word docs, PDFs, shared drives — all editable, all undated, all deniable. The Golden Thread requires immutable evidence by law.
A prescriptive SaaS platform for the whole Golden Thread.
Guides dutyholders on what to capture. Records when, where and by whom. Produces regulator-ready outputs. Creates an immutable audit trail from design through occupation.
Prescriptive, not permissive
Etched GT tells dutyholders what to capture, when, and how — mapped to BSR Gateways 1, 2 and 3 and the four duty-holder roles.
Tamper-proof by design
Every upload is SHA-256 hashed, time-stamped, Merkle-anchored and locked. Chain of custody is preserved automatically.
Regulator-ready outputs
One click produces the Fire & Emergency File, Competence Declarations, Change Control Log and MOR packs the BSR expects.
Four steps. One unbroken thread.
Prescriptive guidance for dutyholders. Tamper-proof by design. Regulator-ready by default.
Capture evidence
Photos, docs, approvals — captured in-app, on site, on time, mapped to BSR Gateways 1–3 and the four dutyholder roles.
Lock & time-stamp
Every document and photo is digitally sealed the moment it is saved. Any change is instantly detectable — nothing can be hidden or altered after the fact.
Chain of custody
Each piece of evidence is linked to the next in an unbreakable chain. If anything is tampered with, the entire chain reveals it — giving you proof you can trust.
Regulator-ready outputs
Fire & Emergency File, Competence Declarations, Change Control Log, MOR packs — one click.
2029 is the deadline. The clock is ticking.
- BSR enforcement is increasing — and the backlog is growing.
- Liability now sits with named individuals, not faceless companies.
- Tick-box approaches won't survive scrutiny in a tribunal.
- Insurance premiums and tender wins depend on provable data.
- Secure, transparent, tamper-proof evidence — independently verifiable.
- Compliant, regulator-ready documentation. Legally assured.
- BSA digital standards met: file types, security, longevity.
- Faster Gateway approvals. Lower insurance friction. Stronger tenders.
"Not a tick box — a chain of tamper-proof evidence providing your single source of truth."
Join the waitlist.
Etched GT is in private beta for UK High-Risk Buildings. Tell us about your project and we'll be in touch within two business days.