Every Assaya register carries a tamper-evident chain. This page checks it — the record is put back together and re-verified end to end, so a shared link is something you can trust, not just read.
Works with any register link an Assaya firm has shared with you.
Each amendment to a seal is hashed with SHA-256 into an append-only chain, stamped by the server clock. Nothing is overwritten — the record only ever grows.
Edit or delete any past entry and every later seal stops matching. One altered record and the break shows the moment the chain is re-checked.
The register link is enough. No account, no login. The check runs against the register's own instance, so what you verify is the live record itself.
The Building Safety Act expects a durable, trustworthy record of the passive fire protection in a building — one that survives handovers, changes of contractor and the years between them. A register that can be quietly edited after the fact is just a spreadsheet with a nicer cover.
Assaya makes the record prove its own integrity. The chain either re-verifies clean, end to end, or it shows you exactly where it was disturbed. That is the difference between a record and evidence.
Honesty note: this verifies the record's integrity — that the entries have not been changed since they were sealed. The physical workmanship on site is what your contractor signs for.