SHA-256 of: "ISG#<issue id>|<headline>|<publication date>" followed, for each notice in the issue in ascending id order, by "|" and "<TYPE>:<title>:<body>" joined with "||" (UTF-8).

RFC 3161 timestamp granted 2026-10-28T12:00:11Z (serial 0982407d) by freetsa.org — download the DER token and verify: openssl ts -verify -digest 54a5c4e68a2fa274af52df866299b48f9a61e402f12571f9c30a95f493819353 -in issue-24.tsr -CAfile cacert.pem (CA: freetsa.org cacert.pem).

OpenTimestamps proof submitted to a public calendar — download the .ots proof; upgrade and verify with the ots client once a Bitcoin block confirms.

Wayback Machine capture: https://web.archive.org/web/20261028120017/https://internationalsacredgazette.org/archive/issue/24