RFC 3161 verification: OK
Authority: http://timestamp.digicert.com
Signed time: 2026-11-06T15:18:08+00:00
Manifest SHA-256: b9c702b5420e5e72eec94efc55847c0e64a7d728fc6f43d0d1771904b4dce48a

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 - b9 c7 02 b5 42 0e 5e 72-ee c9 4e fc 55 84 7c 0e   ....B.^r..N.U.|.
    0010 - 64 a7 d7 28 fc 6f 43 d0-d1 77 19 04 b4 dc e4 8a   d..(.oC..w......
Serial number: 0x41DC60E82CECDB5D444D296CA4E65C23
Time stamp: Nov  6 15:18:08 2026 GMT
Accuracy: unspecified
Ordering: no
Nonce: 0x9B4DCE694C6E0EE4
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.