With the help of a rewrite rule you could force an put to be handled by an update handler before the doc gets stored:
{
"from": "/:docid",
"to": "_update/addTimestamp/:docid",
"method": "PUT"
}
Your root URI must point to the /_rewrite handler of the design doc (a vhost
setting can simplify/ensure that).
smime.p7s
Description: S/MIME cryptographic signature
