Chain of custody receipt

Source #211

Cryptographic attestation that the document below was captured in Goblin House's archive at the timestamp shown, with the hash listed. If the original URL goes dark or its content changes, this receipt remains as evidence of what the public record looked like at capture time.

TitleResearch: xAI - federal contracts site:usaspending.gov
Original URLhttps://www.usaspending.gov/search/?hash=eyJmaWx0ZXJzIjp7ImtleXdvcmQiOiJ4QUkifX0
PublicationPublic Record Research
Source typediscovery_scope_note
Date2024
EntityxAI
Captured2026-04-05T08:07:59.703Z UTC
Hash computed at2026-04-05T08:07:59.703Z UTC
SHA-25643b9821ac9147ff5338ee8a5f2c3b813141c10c984f7fb0fd001ac587b781359
Content length633 bytes
Content preview (first 800 chars)
Research into xAI's federal contracting activity through USASpending.gov reveals limited publicly documented contract awards as of my knowledge cutoff. xAI (Explainable Artificial Intelligence company founded by Elon Musk in 2023) is a relatively new entity in the federal contracting space. USASpending.gov is the official source for federal spending data, tracking contracts, grants, and other financial assistance. A thorough search would require direct database queries to confirm any contract awards, as xAI's federal contracting presence was not well-established in public records during the period covered by my training data.

Verifying this receipt

The hash above was computed as:

sha256( coalesce(url, '<no-url>') || '\n' || raw_content )

Anyone with a copy of the original document can verify the match:

  1. Take the URL field and the original document content.
  2. Concatenate url + '\n' + content and SHA-256 it.
  3. Compare to the SHA-256 row above.

Or POST the candidate content to /source/211/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/211/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/211/receipt.json