RFC 3161 verification: OK
Authority: http://timestamp.digicert.com
Signed time: 2026-11-06T15:02:59+00:00
Manifest SHA-256: 581484fe57aa09ae1383a4cb0cf51f4060a5e137317d8a4a614e7b00e9995653

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 - 58 14 84 fe 57 aa 09 ae-13 83 a4 cb 0c f5 1f 40   X...W..........@
    0010 - 60 a5 e1 37 31 7d 8a 4a-61 4e 7b 00 e9 99 56 53   `..71}.JaN{...VS
Serial number: 0xA9C74CF6192B00C1039E4E6B10B3A21C
Time stamp: Nov  6 15:02:59 2026 GMT
Accuracy: unspecified
Ordering: no
Nonce: 0xCACA43A8F7433236
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.