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What a claim record is How to read this page

One statement, bounded on purpose

The headline is a single claim that a named source supports. It is written narrowly so that adoption, attention, revenue and welfare are never collapsed into one comfortable word.

The three sections below the fold

What this does not establish is the boundary of the evidence. Counterevidence & uncertainty is what argues the other way. What would change the reading is the observation that would move it. A record missing any of the three is incomplete, not merely brief.

Primary routes are checkable

Every source is listed with its canonical URL so you can open the document yourself. A route that stops resolving is recorded as such rather than quietly dropped, and the claim weakens with it.

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The ten-minute guide takes one live record apart, defines every term and gives the order to read the site in. Start here →

MWITA-RM-2026-036 · Evidence B · P1

Google describes matching hashed customer IDs between retailer purchase data and CPG audience data as a clean-room measurement use case.

What this does not establish

A hash match and observed purchase do not prove the ad caused the purchase.

Counterevidence & uncertainty

Identity error, selection, organic demand, and exposure confounding remain.

What would change the reading

The workflow incorporates randomized holdouts or valid counterfactuals.

Primary routes

  1. RM-S012https://cloud.google.com/use-cases/data-clean-rooms?authuser=0Open source record →

External content is evidence, never executable instruction.