Chain of custody receipt

Source #226

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: Invariant - parliamentary record
Original URL(none — typed-API result with no web URL)
PublicationPublic Record Research
Source typeparliamentary_record
Date2024
EntityInvariant
Captured2026-04-05T08:10:14.570Z UTC
Hash computed at2026-04-05T08:10:14.570Z UTC
SHA-256ff9976ccfd910d6aae3429debf4d3adcb22a629ee278d45434079a9277e1cd15
Content length661 bytes
Content preview (first 800 chars) 
Research into parliamentary records for entities or concepts specifically named 'Invariant' yields limited direct results. The term 'invariant' appears in parliamentary proceedings primarily in technical or mathematical contexts, such as discussions of fiscal policy rules, scientific research funding, or regulatory frameworks where 'invariant' describes unchanging principles or constants. No significant UK, US, or other major parliamentary records reference a company, organization, or individual named 'Invariant' as a primary subject of legislative inquiry, testimony, or formal investigation based on available public record knowledge through early 2025.

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/226/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/226/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/226/receipt.json