RFC 3161 verification: OK
Authority: http://timestamp.digicert.com
Signed time: 2026-11-12T00:16:18+00:00
Manifest SHA-256: 856626029dec6871dfd7a3fef62da703b9d9d4e0dbd8fa3ea79ebd2fe3fb0775

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 - 85 66 26 02 9d ec 68 71-df d7 a3 fe f6 2d a7 03   .f&...hq.....-..
    0010 - b9 d9 d4 e0 db d8 fa 3e-a7 9e bd 2f e3 fb 07 75   .......>.../...u
Serial number: 0x30CA319837CB183D5045B9A596F897BB
Time stamp: Nov 12 00:16:18 2026 GMT
Accuracy: unspecified
Ordering: no
Nonce: 0x1E3DE3F615A97242
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.