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Nothing your organization knows gets lost again.

Every determination kept with its evidence and its signature. Nothing overwritten. Ten years from now you can still see what was decided and who decided it.

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The record

What gets kept.

The determination

What was decided. The decision itself, attached to the thing it was about, rather than an email that mentions it.

The evidence

What was in front of the person when they decided. The drawing, the quote, the clause, the reading, the alternative that was priced and not taken.

The signature

Who decided, in what role, on what date. A question years later has a person's name on it.

One entry is two facts at once: a fact about the job and a fact about your organization, joined by the determination DEC-3141-06 and its evidence. Anchored to the element itself, so the record survives the vendor, the system and the people who were there when it was made. The evidence sits between them. Your tools will change four times in the next twenty years. The record does not have to change once.

How it holds

The record keeps what you used to think.

When something turns out to be wrong, the correction is added and the original stays underneath it. Nothing is edited and nothing is deleted. The record cannot quietly become a different record.

/record/AHU-07/determinations
element 2O2Fr$t4X7Zf8NOew3FKrKwritten 3edited 0deleted 0
Current2026-06-24  14:32

Accept revised hanger detail

Senior superintendent · signed

What was decided
Accept the revised hanger detail at rev C. Seismic clearance measured at 38 mm against a 25 mm minimum.
What was weighed
Two options priced. Relocating the unit cleared the conflict but pushed mechanical rough-in by eleven days.
Evidence
  • Shop drawing, rev CSD-M-4412
  • Seismic clearance calculationCALC-0917
  • Both options, pricedEST-2246
Entry
DEC-3141-06
Hash
a06a44e4…0070e5
Links to
← 7f13c9b2…41ad38
Governed by
Spec 23 05 48 rev 4
Superseded2026-05-02  09:14

Hold, seismic clearance not met on rev B

Structural reviewer · signed

What was decided
Hold. Clearance measured at 19 mm against a 25 mm minimum. Detail returned for revision.
Evidence
  • Site measurement, level 2 mechanicalFLD-1188
  • Shop drawing, rev BSD-M-4409
Superseded by DEC-3141-06 on 2026-06-24. Rev C resolved the clearance. This entry stays because it is what was believed, and acted on, for seven weeks.
Entry
DEC-3141-04
Hash
7f13c9b2…41ad38
Links to
← c2e80d15…9b6612
Governed by
Spec 23 05 48 rev 3
Superseded2026-03-11  16:48

Hanger per shop drawing rev A

Project engineer · signed

What was decided
Proceed with the hanger arrangement as submitted. No clearance issue identified at review.
Evidence
  • Shop drawing, rev ASD-M-4401
  • Submittal review recordSUB-0774
Superseded by DEC-3141-04 on 2026-05-02. The clearance issue was found on site, not at review.
Entry
DEC-3141-01
Hash
c2e80d15…9b6612
Links to
← genesis
Governed by
Spec 23 05 48 rev 3
Chain verified  · every entry links to the one before itoldest 2026-03-11  · newest 2026-06-24

An entry cannot be altered without breaking the link to the one after it, so what the record said in March is still what it said in March. Open a superseded entry and it is all still there, evidence included.

Use cases

What it is for.

Defend a decision

An owner, an auditor, a surety, a claims lawyer. When someone asks why this was approved and on what basis, the answer takes minutes rather than weeks.

Hand it over intact

Everything decided in design and delivery arrives with the asset, so whoever runs it for the next forty years inherits the reasoning and not just the drawings.

Price your own risk

What your organization knows has never been sellable, because it was never separable from the people who held it. Encoded, with the evidence attached, it is something you can put in front of an owner, a lender or an insurer.

See what this looks like on your own work.

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