Digest verify does not return correct server timestamp of first anchor to include the digest

[jrick]

$ curl --silent -XPOST https://time.decred.org:49152/v2/verify/batch --data '{"digests":["d412ba345bc44fb6fbbaf2db9419b648752ecfcda6fd1aec213b45a5584d1b13"]}' | jq .digests.[0].chaininformation.chaintimestamp
1605780312
$ curl --silent -XPOST https://time.decred.org:49152/v2/verify/batch --data '{"timestamps":[1605780312]}' | jq                                                                                                     
{
  "id": "",
  "digests": [],
  "timestamps": [
    {
      "servertimestamp": 1605780312,
      "result": 3,
      "collectioninformation": {
        "chaintimestamp": 0,
        "transaction": "0000000000000000000000000000000000000000000000000000000000000000",
        "merkleroot": "0000000000000000000000000000000000000000000000000000000000000000",
        "digests": []
      }
    }
  ]
}

	// ResultDoesntExistError indiciates the timestamp or digest does not
	// exist.
	ResultDoesntExistError ResultT = 3

[jrick]

I see the issue, timestamp verify works properly but the digest verify is returning what appears to be the collection time, rather than the anchor time (which must be used to verify by timestamp).

[jrick]

or rather than collection time, because that is "chain information", it is probably the block timestamp. Which is rather useless.

the "server timestamp" for that digest verify appears to always show the last hourly anchor time, and not the anchor which first included this digest.

$ date
Fri Feb 14 18:17:47 EST 2025
$ curl --silent -XPOST https://time.decred.org:49152/v2/verify/batch --data '{"digests":["d412ba345bc44fb6fbbaf2db9419b648752ecfcda6fd1aec213b45a5584d1b13"]}' | jq .digests.[0].servertimestamp 
1739574000
$ date -r 1739574000                                                                                                                                                                             
Fri Feb 14 18:00:00 EST 2025

[jrick]

As expected, after the next hourly scheduled anchor, the server timestamp for the same digest verify has increased:

$ date                                                                                                                                                                                           
Fri Feb 14 19:01:29 EST 2025
$ curl --silent -XPOST https://time.decred.org:49152/v2/verify/batch --data '{"digests":["d412ba345bc44fb6fbbaf2db9419b648752ecfcda6fd1aec213b45a5584d1b13"]}' | jq .digests.[0].servertimestamp 
1739577600
$ date -r 1739577600
Fri Feb 14 19:00:00 EST 2025