Chain of custody receipt

Source #4900

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.

TitleIRS Form 990PF: Imec Inc — 2020 (EIN: 77-0540932)
Original URLhttps://projects.propublica.org/nonprofits/organizations/770540932
PublicationIRS Form 990 via ProPublica Nonprofit Explorer
Source typeform_990
Date2020
Entityimec
Captured2026-04-12T17:34:00.826Z UTC
Hash computed at2026-04-12T17:34:00.826Z UTC
SHA-2569dd7614c17a9b3f0b9b2fc91cf5bb99b825780b808cc2db0ba8203b29f84f44d
Content length4,202 bytes
Content preview (first 800 chars)
{
  "organization": {
    "id": 770540932,
    "ein": 770540932,
    "name": "Imec Inc",
    "careofname": "% MAX MIRGOLI",
    "address": "220 MONTGOMERY ST STE 1027",
    "city": "San Francisco",
    "state": "CA",
    "zipcode": "[ZIP+4 redacted]",
    "exemption_number": 0,
    "subsection_code": 3,
    "affiliation_code": 3,
    "classification_codes": "2000",
    "ruling_date": "2015-09-01",
    "deductibility_code": 1,
    "foundation_code": 3,
    "activity_codes": "000000000",
    "organization_code": 1,
    "exempt_organization_status_code": 1,
    "tax_period": "2024-12-01",
    "asset_code": 6,
    "income_code": 7,
    "filing_requirement_code": 0,
    "pf_filing_requirement_code": 1,
    "accounting_period": 12,
    "asset_amount": 2253290,
    "income_amount": 7940403…

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/4900/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/4900/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/4900/receipt.json