I was messing with ValidationOS a few weeks ago and I ran bcdboot on it and noticed the entry was named "OneCore". Combined with the appearance it is safe to assume it is another OneCore distribution.
^^^^^^^^ SHA256: Code: 9a6291eaa49e20f4ee7720e1f489b70ef42eb3cecdfc5b8048b99e773230307d *26100.4768.250715-1348.ge_release_svc_prod3_arm64fre_en-us_VALIDATIONOS.iso 010070a4ba221f1313f11e060d27263527c2218218797d63c6f083696cc80b7a *26100.4768.250715-1348.ge_release_svc_prod3_amd64fre_en-us_VALIDATIONOS.iso SHA1: Code: 13a3e35a2086f2051dc0c954da4169c76bf9d906 *26100.4768.250715-1348.ge_release_svc_prod3_arm64fre_en-us_VALIDATIONOS.iso 51829fd6126517de89c708b2f9ecb05ea2ff12c9 *26100.4768.250715-1348.ge_release_svc_prod3_amd64fre_en-us_VALIDATIONOS.iso
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ SHA256: Code: 8b2666aea1a0ec1ef5a1cd234391bde7d84259502b5845967b73ce90b75fd585 *26100.5074.250826-1428.ge_release_svc_prod3_arm64fre_en-us_VALIDATIONOS.iso 96802745ad0e9bc6a6cdc445cff815bcb446f1e852090747433f88c749246d0f *26100.5074.250826-1428.ge_release_svc_prod3_amd64fre_en-us_VALIDATIONOS.iso SHA1: Code: 9d15b047c3db1b41bc271cb2e624ec62a4ab0cbc *26100.5074.250826-1428.ge_release_svc_prod3_arm64fre_en-us_VALIDATIONOS.iso d45ee1369453b0b3ca3b34b2d408d9de9c171c88 *26100.5074.250826-1428.ge_release_svc_prod3_amd64fre_en-us_VALIDATIONOS.iso
He deserves all possible credits but didn't you mean @adguard? https://forums.mydigitallife.net/posts/1890741