Chain of custody receipt

Source #43735

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.

TitleSEC EDGAR: filing — Taiwan Semiconductor Manufacturing Company (TSMC) (2013-02-15)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Taiwan%20Semiconductor%20Manufacturing%20Company%20(TSMC)%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2013-02-15
EntityTaiwan Semiconductor Manufacturing Company (TSMC)
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:05:26.323Z UTC
SHA-256c359536cb44418ade9d92b3e524fb45a7e5e25ace2b7ec0cfcac7e812cad384f
Content length561 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0000768251"
  ],
  "period_ending": "2012-12-31",
  "file_num": [
    "000-16617"
  ],
  "display_names": [
    "ALTERA CORP  (CIK 0000768251)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2013-02-15",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "3674"
  ],
  "form": "10-K",
  "adsh": "0000768251-13-000008",
  "film_num": [
    "13619990"
  ],
  "biz_locations": [
    "San Jose, CA"
  ],
  "file_type": "10-K",
  "file_description": "FORM 10-K",
  "inc_states": [
    "DE"
  ],
  "items": []
}

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/43735/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/43735/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/43735/receipt.json