Everything the golden thread demands.
From a pin dropped on the plan to a hallmarked certificate the client can open without a login. Assaya is golden-thread recording software for passive fire protection — fire stopping, fire doors, fire dampers — built and used daily by a working UK fire-stopping contractor.
The app, in the operative's hand
The record starts where the work happens. Tap the plan, drop a pin, and the app walks the operative through the capture in order — no blank forms, no guesswork about what the office needs. It works with no signal and catches up later, so a basement or a riser is no excuse for a missing record.
A pin on the plan
Tap the plan, drop a pin. Every seal is placed against the drawing, not described in a note nobody can find later.
Guided capture
The app asks for each detail in turn — operative, tested detail, product, substrate, fire rating — so nothing is left half-recorded.
Provenance-stamped photos
Before, during and after photos, each stamped with time, reference and location, held against the record for good.
Works with no signal
Capture fully offline and let it sync when you are back in range. A sync screen shows the queue so nothing is lost.
My week
A diary view of where the operative has been and what is still on the list, straight from the phone.
Van stock
Track what is on the van, so materials used against a seal line up with what left the store.
The console that runs the job
Everything the site captures lands in the admin console. Jobs, drawings, roles, the work diary, materials and live costings sit in one place, so the office is never chasing paper to answer a client or price a variation.
Jobs & drawings
Hold drawings against each job with revision and expiry dates, so operatives always work to the current sheet.
Roles & scoping
Admin, surveyor, operative and client-observer roles, scoped per job and per trade so people see only what they should.
Work diary
Book crew onto jobs or off for holiday, annual leave or sick. Export the week as a hallmarked PDF or CSV.
Materials & costings
A materials log and live job costings — labour from diary days and day rates, materials against a schedule of rates.
Tasks & activity ledger
Assign tasks and read a full activity ledger of who did what, so the office always has the account of a job.
Support desk
Raise a query and get a ticket number, so nothing sits in an inbox waiting for someone to remember it.
A record that cannot be quietly changed
This is the part that matters when questions come years later. Every change to a seal is an append-only, hash-chained snapshot, stamped by the server clock rather than a phone that could be set wrong. Every seal, attested — and the whole chain re-verifies end to end.
A hash chain
Each snapshot is linked by SHA-256 to the one before it. Records are added, never overwritten.
Server-clock stamps
Every entry is timed by the server, not the device, so the record does not depend on a phone's clock being right.
End-to-end re-verification
Alter any past entry and the chain breaks for everything after it. The whole chain re-verifies from end to end.
Retention & legal hold
Deleted jobs are kept under configurable retention and legal hold, with photos retained against the records.
Anyone can check a register for themselves — no login, no account. Point them at /verify.html and the chain proves itself.
Evidence the building owner can actually use
A record is only worth having if the people who need it can open it. Assaya gives the client a read-only register and hallmarked evidence packs — the durable statutory record the Building Safety Act expects, without a piece of software to learn.
Read-only register link
Share a register by link. No login and no account needed for the client to see the current record.
Hallmarked evidence PDFs
Issue evidence-pack PDFs, hallmarked so the client can hand them on with confidence in where they came from.
Door & damper register
A fire-door and damper register with inspection cadence, so recurring checks are scheduled, not forgotten.
Statutory building record
The durable statutory record the Building Safety Act expects, kept current as the building changes.
Never held hostage
Each firm gets its own isolated instance and database, hosted in the UK. You can export everything at any time, and if you ever leave, you take a full handover pack with you. The record is yours, and it stays that way.
- Its own isolated instance and database for every firm — your data is not pooled with anyone else's.
- UK hosting in a London data centre, with TLS everywhere and nightly off-server backups.
- Full data export any time, plus a handover pack if you ever leave — no lock-in.
The full detail is on the trust page.