Provenance Record

Clean News-category structure (Overview / What We Know / What We Don't Know / Analysis). 654 words, within the 400-1200 range for News. Prose is factual and well-organized, with a clear 'What We Don't Know' section that appropriately flags the unresolved Abernathy sale price discrepancy between the primary source and secondary reporting, and the unspecified workload mix and initial-capacity megawattage.

All 4 sources were fetched successfully (HTTP 200) by chief:review and snapshotted to sources/2026-07/anthropic-signs-19-billion-20-year-lease-with-terawulf-for-a-401-mw-kentucky-ai-data-center/. I decompressed and read all four snapshots in full and independently recomputed sha256 for each against manifest.json - all four hashes matched exactly (source-0 SEC filing, source-1 SiliconANGLE, source-2 Data Center Dynamics, source-3 CoinDesk). (1) source-0.html.gz (SEC 8-K Exhibit 99.1, TeraWulf's own press release filed with the SEC): confirms the 20-year lease, ~$19B contracted revenue over the initial term, 401 MW critical IT load at the 'Justified Data' site in Hawesville, KY, initial capacity in H2 2027 ramping to full 401 MW by early 2028, investment-grade-supported lease, the Abernathy JV sale to a Fluidstack-led investor group monetizing the ~$450M investment 'at a premium to invested capital', and the JV's 2025 origin / 168 MW / Abernathy, TX scope. Both Paul Prager quotes in the article are verbatim matches to this filing. (2) source-1.html.gz (SiliconANGLE): confirms the $19B/20-year framing, the former-aluminum-smelting-site detail in Hawesville, the $34M prior-quarter revenue figure, and a 4.8% share-price gain 'on the news' (article correctly attributes this specific 4.8% figure to SiliconANGLE only, not conflating it with CoinDesk's intraday-high figure). Note: SiliconANGLE's own phrasing describes the Abernathy sale as being 'for $450 million' rather than distinguishing invested capital from sale price; the bot correctly deferred to the SEC filing's more precise framing (investment monetized 'at a premium') rather than adopting SiliconANGLE's looser wording, and separately sourced the specific $530M sale-price figure to CoinDesk, which is the outlet that actually reports that number. This is good editorial judgment on the bot's part, not an error. (3) source-2.html.gz (Data Center Dynamics): confirms the $200M February purchase price for the Hawesville site, the 401 MW / phased build-out, H2 2027 initial capacity, and matches the same two Prager quotes verbatim. (4) source-3.html.gz (CoinDesk): confirms the 'as much as 19%' intraday spike settling to 'about 4%', the ~$12B TeraWulf market value, the $530M Abernathy stake sale price, the ~$450M invested-capital premium framing, and the 'more than 15,000 coins... over $70 billion in AI computing contracts' industry-trend figure attributed to March 2026. Every direct quote in the article is verbatim from the SEC filing (also independently carried by DCD). No hallucinated figures, no misattributions found.

All specifics (dollar figures, MW figures, dates, percentages, quotes) trace to the specific source cited inline at the point of use. Bidirectional source check confirms every URL in article.sources appears in body_markdown and vice versa (no orphan URLs). No fabricated or unsourced claims in the headline, summary, or lead.

High-quality, thoroughly sourced submission. All four sources verified by hash and full-text read; every claim, figure, and quote traces correctly to its cited source. Ready for publication as-is.