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The Artifact

Slide the comp set, watch the value re-derive.

Distance-function visualizer. Pick comparables, see the appraisal recompute in real time. The math is the appraisal.

Ap
Dimension
Appraiser
0.6–28 J
per call

Property valuation under USPAP

Subject + comp set + Mahalanobis distance + weighted reconciliation. Reports conform to USPAP 2024-25 SR 2 in either Appraisal Report or Restricted Report form. Every numeric input is hashed into the reproducibility manifest.

Sample receipt
JWP ReceiptPayload
kind "expert.opinion.signed"
value $612,000
confidence 0.91
distance Mahalanobis, 11 features
joules 0.62
cite "USPAP 2024-25 SR 1–2 · UAD 2.0 · Fannie Mae SEL-2024-04"
sig "ed25519:0x4f...c1a"
Anatomy — operational specs
Distance metric
Mahalanobis (11-feature)
Comp set
5 sales, ≤1.4 mi, ≤184 d
Schema
UAD 2.0 / MISMO 3.6
Engine SHA
a3f9c2e
In
Dimension
Inspector
1.2–16 J
per call

Condition assertions with evidence

InterNACHI SOP 2024 + ASHI E2018-22. Each assertion is a typed predicate over a building system with a photo hash, a confidence in [0,1], and a SOP section reference. Material findings escalate to a re-inspection workflow.

Sample receipt
JWP ReceiptPayload
kind "expert.inspection.filed"
assertions 47
material 2
photo.hash sha256
joules 4.32
cite "InterNACHI SOP 2024 · ASHI Standard E2018-22"
sig "ed25519:0x4f...c1a"
Anatomy — operational specs
Assertion median
0.91 confidence
Photo store
S3 + sha256 manifest
Material trigger
auto-escalate
Schema
Ab
Dimension
Arbitrator
2.4–40 J
per call

Structured dispute resolution

AAA Commercial Arbitration Rules + JAMS Streamlined. Each award is a typed decision: issues, findings, holdings, and a reasoned chain that cites the contract clauses and the evidence receipts that satisfied each predicate.

Sample receipt
JWP ReceiptPayload
kind "expert.award.issued"
issues 4
findings 11
holdings 4
joules 6.18
cite "AAA Commercial Rules R-47 · JAMS Streamlined Rule 19 · Federal Arbitration Act 9 USC §1-16"
sig "ed25519:0x4f...c1a"
Anatomy — operational specs
Standard
AAA Commercial / JAMS
Evidence
receipt-linked
Award size
12.4 KB median
Vacatur fields
FAA §10 enumerated
Jd
Dimension
Judge
8–80 J
per call

LLM-as-judge evaluation

A reference-free judge over model outputs using the IFEval + AlpacaEval 2.0 rubric. Each verdict cites the rubric clause it relied on; pairwise comparisons are deterministic given the same seed and model snapshot.

Sample receipt
JWP ReceiptPayload
kind "expert.judge.verdict"
rubric alpacaeval-2.0
pairs 64
agreement.kappa 0.78
joules 18.4
cite "IFEval (Zheng et al. 2023) · AlpacaEval 2.0 · MT-Bench"
sig "ed25519:0x4f...c1a"
Anatomy — operational specs
Rubric
AlpacaEval 2.0
Seed
pinned
Model snapshot
sha256-pinned
Kappa vs human
0.78
Ex
Dimension
Examiner
1.4–22 J
per call

Document examination

Forensic examination of signatures, dates, and seals against ASTM E2388-23 standard practice. The examiner emits a typed report with feature distances against an exemplar set; conclusion is on the SWGDOC 9-point scale.

Sample receipt
JWP ReceiptPayload
kind "expert.exam.report"
features 23
exemplars 12
scale SWGDOC 9-point
joules 3.27
cite "ASTM E2388-23 · SWGDOC Standard for Examination of Handwritten Items"
sig "ed25519:0x4f...c1a"
Anatomy — operational specs
Standard
ASTM E2388-23
Scale
SWGDOC 9-point
Feature space
23-D
Conclusion form
typed, citable

ExpertOS, in one line

resolution, made inspectable.

Click anything. The same primitives that compose the rest of the Transaction Science family — receipts, joules, signed transport — show up here too. The family is one system.