Chain of custody receipt

Source #17557

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: Stagwell Marketing Group LLC — Lobbying disclosures (no results)
Original URL(none — typed-API result with no web URL)
PublicationSearch Scope Note
Source typegovernment_disclosure
Date2026
EntityStagwell Marketing Group LLC
Captured2026-04-23T10:05:53.506Z UTC
Hash computed at2026-04-23T10:05:53.506Z UTC
SHA-256736e3eb64e6f18f6c58abd4ada9d1271e8f37ca2ed0e815a61c3f88241dd5afa
Content length230 bytes
Content preview (first 800 chars) 
No Lobbying disclosures found for "Stagwell Marketing Group LLC" in public databases or web search. This may be due to name variations, subsidiary filings, or limited search coverage — not necessarily absence from public record.

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/17557/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/17557/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/17557/receipt.json