RFC 3161 verification: OK
Authority: http://timestamp.digicert.com
Signed time: 2026-11-11T19:16:19+00:00
Manifest SHA-256: 640d292f166713fb30a91e3b38e6cbed202fa5e134a85c4a4ddc8aec326bf3a2

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 - 64 0d 29 2f 16 67 13 fb-30 a9 1e 3b 38 e6 cb ed   d.)/.g..0..;8...
    0010 - 20 2f a5 e1 34 a8 5c 4a-4d dc 8a ec 32 6b f3 a2    /..4.\JM...2k..
Serial number: 0x9B71C82825851528C523418CD4C5EF68
Time stamp: Nov 11 19:16:19 2026 GMT
Accuracy: unspecified
Ordering: no
Nonce: 0x96241D63F39899CD
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.