Intake

Every door answers the same five questions about what arrived, and the answers are written onto the record and sealed into the receipt. They do not change a score.

An earlier design scored them. The engine’s own note refuses it: minimum-over-caps is sound because freshness, class and re-ingest ceilings measure different failure axes, and a step between two estimators of ONE axis produces a trough by construction. What an arrival proves about an identity claim is the axis the actor keyring already prices.

The five questions

UNESTABLISHED is a required answer, not a missing field. A door that can leave a question out is a door an attacker configures — last week’s audit found four separate places where an absent field was read as “fine”, including one where omitting a single property skipped half a patent claim while the receipt still read IDENTICAL OCTET FOR OCTET.
#	The question	Why it is asked
1	Can we tell WHO sent it?	A class is granted from an observer identity. If the arrival establishes nothing about who sent these bytes, the identity is a name somebody typed.
2	Can we tell it was NOT ALTERED on the way?	Integrity in transit. Without it, the bytes compared are not the bytes sent.
3	Can we tell it is not an OLD READING REPLAYED?	Freshness binding. A correct measurement presented late is a different fact.
4	If we fetched it: WHEN, and FROM WHERE?	A retrieval record is real evidence about a public source, and it is not the same evidence as a signature.
5	Can the source DENY having sent it?	Non-repudiation. This is the audit-log control AU-10 stated as a question about a door.

What a class rests on

The engine decides what evidence is worth from who observed it. Two things can establish that, and they are not equally strong:

Both of the first two are legitimate. What is not legitimate is granting a class the second way in silence, which is why every page that does it says so — machine checked, and the check aims at the route those pages actually take rather than at a setting they never touch.
How the identity was established	What it proves	What the class rests on
A signature over these bytes, from a key in a signed actor registry	this observer committed to this exact record	a signature
A signed rule table mapping actor names to classes	the operator signed the table; the actor name is still the caller’s	the operator’s control of their own ingest boundary
Neither — no registry configured	nothing about who sent it	nothing. The default floors every class to SELLER-ASSERTED, and says so on the record.

Which door each product uses

One contract, several implementations. The doors are DISCOVERED rather than listed: an enumerated set of six was proposed and a reviewer put ten real cases against it — a file upload, an email, a photograph, a PDF certificate, a receipt re-ingested from another installation — and six had no honest box. A list of doors typed today stops growing today.
Product	What arrives	The doors it needs
TellmeTiresias	staff entry and IoT device readings	keyed, device
AttestedAssets	human entry and API responses	keyed, api
Stock Risk Receipt	API feeds, web pages and social posts	api, retrieved
Corobate	supply-chain activity from AI and human agents	agent, keyed
PaymentVerification	output of a sealed execution	sealed

Where this is honest about not being finished

The arrival is not yet recorded on the receipt. The transport layer strips it. This page states the contract; the record does not yet carry it.
Two products — F08 and AttestedAssets — do not consume provenance-classing at all, so the who-observed-it distinction does not reach them even in the declared architecture.
A sensor reaching its full class requires a signing key enrolled per device. Under the secure default a sensor is worth SELLER-ASSERTED, and no amount of naming it actor:sys:sensor: changes that.

Corobate · standalone install · one product · built by 27-console/build-console.js from the register, not typed.

This page loads nothing from another origin, makes no request at run time, and touches no browser storage. It works from a file on disk with no server.

Nothing in this console is legal advice.