RFC 3161 verification: OK
Authority: http://timestamp.digicert.com
Signed time: 2026-11-06T11:40:52+00:00
Manifest SHA-256: 7fd0235bfef3fc9f07161638ae5246d965b197750efaf6bdaa3777c749b9f608

Status info:
Status: Granted.
Status description: unspecified
Failure info: unspecified

TST info:
Version: 1
Policy OID: 2.16.840.1.114412.7.1
Hash Algorithm: sha256
Message data:
    0000 - 7f d0 23 5b fe f3 fc 9f-07 16 16 38 ae 52 46 d9   ..#[.......8.RF.
    0010 - 65 b1 97 75 0e fa f6 bd-aa 37 77 c7 49 b9 f6 08   e..u.....7w.I...
Serial number: 0x7C5D9F7B2EA89768F086A0D6EC0890A5
Time stamp: Nov  6 11:40:52 2026 GMT
Accuracy: unspecified
Ordering: no
Nonce: 0x7FF1E15A980F9FB3
TSA: unspecified
Extensions:

Reproduce with OpenSSL:
openssl ts -verify -data manifest.json -in response.tsr -CAfile authority.pem -untrusted chain.pem

Verify authority.pem against the DigiCert Trusted Root G4 published certificate.
This proves existence no later than the signed time, not authorship, accuracy or original publication date.