Chain of custody receipt

Source #73471

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.

Title	SEC EDGAR: 4 — Grey Rock Energy Fund III-B Holdings, LP (2023-09-15)
Original URL	https://www.sec.gov/Archives/edgar/data/1737893/000110465923101288/0001104659-23-101288-index.htm
Publication	SEC EDGAR
Source type	`sec_filing`
Date	2023-09-15
Entity	B Brigade Majority Fund
Captured	2026-09-28T13:03:17.646Z UTC
Hash computed at	2026-09-28T13:03:17.646Z UTC
SHA-256	`c13d333ccd1f7ff9468c2cdbd87b2ab4578227fe35c590bb8763701f815e0186`
Content length	1,953 bytes

Content preview (first 800 chars)

{
  "ciks": [
    "0001737893",
    "0001737903",
    "0001737907",
    "0001950552",
    "0001950549",
    "0001950815",
    "0001950570",
    "0001950592",
    "0001950793",
    "0001950795",
    "0001928446"
  ],
  "period_ending": "2023-09-15",
  "file_num": [
    "001-41537",
    "001-41537",
    "001-41537",
    "001-41537",
    "001-41537",
    "001-41537",
    "001-41537",
    "001-41537",
    "001-41537",
    "001-41537"
  ],
  "display_names": [
    "Grey Rock Energy Fund III-B Holdings, LP  (CIK 0001737893)",
    "Grey Rock Energy Fund III-A, LP  (CIK 0001737903)",
    "Grey Rock Energy Fund III-B, LP  (CIK 0001737907)",
    "GREP GP III, LLC  (CIK 0001950552)",
    "GREP GP III Holdings, LLC  (CIK 0001950549)",
    "GREP Holdco III-B Holdings, LLC  (CIK 0001950815)"…

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:

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

Or POST the candidate content to /source/73471/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/73471/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/73471/receipt.json