Chain of custody receipt

Source #12874

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 — Tom Coburn (2017-07-24)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Tom%20Coburn%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2017-07-24
EntityTom Coburn
Captured2026-04-23T06:39:40.477Z UTC
Hash computed at2026-04-23T06:39:40.477Z UTC
SHA-256185edfb37f3eb2be02baef4d9fd0ab64e97742128934ddeeca9fb75bdc55209c
Content length1,027 bytes
Content preview (first 800 chars) 
{"took":566,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":0,"relation":"eq"},"max_score":null,"hits":[]},"aggregations":{"entity_filter":{"doc_count_error_upper_bound":0,"sum_other_doc_count":0,"buckets":[]},"sic_filter":{"doc_count_error_upper_bound":0,"sum_other_doc_count":0,"buckets":[]},"biz_states_filter":{"doc_count_error_upper_bound":0,"sum_other_doc_count":0,"buckets":[]},"form_filter":{"doc_count_error_upper_bound":0,"sum_other_doc_count":0,"buckets":[]}},"query":{"_source":{"exclude":["doc_text"]},"query":{"bool":{"must":[{"match_phrase":{"doc_text":"Tom Coburn"}}],"must_not":[],"should":[],"filter":[{"terms":{"root_forms":["4","SC 13D","SC 13G","DEF…

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/12874/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/12874/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/12874/receipt.json