Chain of custody receipt

Source #15503

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 — BlackRock Financial Management, Inc. (2019-07-03)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22BlackRock%20Financial%20Management%2C%20Inc.%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2019-07-03
EntityBlackRock Financial Management, Inc.
Captured2026-04-23T09:04:39.110Z UTC
Hash computed at2026-04-23T09:04:39.110Z UTC
SHA-256028a5dd1e6bfef628cbc7ac124457058e6e0c744fb710695a2c4ddb3a0d408ca
Content length67,080 bytes
Content preview (first 800 chars) 
{"took":5326,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":10000,"relation":"gte"},"max_score":12.15998,"hits":[{"_index":"edgar_file","_id":"0001193125-22-184033:d309089dsc13da.htm","_score":12.15998,"_source":{"ciks":["0001651561","0001364742"],"period_ending":null,"file_num":["005-89657"],"display_names":["Tabula Rasa HealthCare, Inc. (CIK 0001651561)","BlackRock Inc. (BLK) (CIK 0001364742)"],"xsl":null,"sequence":1,"root_forms":["SC 13D"],"file_date":"2022-06-28","biz_states":["NJ","NY"],"sics":["7389","6211"],"form":"SC 13D/A","adsh":"0001193125-22-184033","film_num":["221051025"],"biz_locations":["Moorestown, NJ","New York, NY"],"file_type":"SC 13D/A","file_description":"SC…

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/15503/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/15503/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/15503/receipt.json