Observed arrival · 2026-10-28

Cleanroom’s licensed corpus, one market-year at a time

data-cleanroom.org Visit website

Editorial interest 72/100 Selection signal · not a rating of the site

A licensed corpus of signed public-company disclosure records, offered market-year by market-year for model teams and research desks.

Landing page captured for the 2026-10-28 issue.

For: Model teams and company-disclosure research desks
Worth noticing: The page says each row carries an Ed25519 signature and key ID, plus a reference to its source document.

Field notes

The page separates a licensed historical corpus from live, call-by-call reads on market-specific “doors.” It identifies an MCP endpoint for checking held years, row counts, and source documents; the displayed benchmark is US 2024–2024. The site says the corpus excludes prices and client data, while live reads cost $0.01 and the corpus license remains unpriced.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

$PaidCommerce or pricing visible

✦PrettyNotable craft visible

◎NicheUnusually specific use

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