Chain of custody receipt

Source #43057

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.

TitleSEARCH_ERROR: Optimal Investment Services not found in opencorporates
Original URL(none — typed-API result with no web URL)
PublicationPipeline — search validation (opencorporates)
Source typeclaim_flag
Date2026-05-09
EntityOptimal Investment Services
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:08:53.614Z UTC
SHA-256177417e4de18fab48f6c0573a7fc1c9b6129d64f418cad3c2b9247f3f86d998f
Content length268 bytes
Content preview (first 800 chars) 
Entity Optimal Investment Services is expected to appear in opencorporates (matches profile: opencorporates). Null result likely indicates query mismatch (legal-name variant, subsidiary, or wrong identifier). No alternate identifiers stored — manual review required.

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/43057/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/43057/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/43057/receipt.json