1.) Ok, if the history tab in Electrum shows the timestamp of the first confirmation:
Where can I see INSIDE Electrum when I sent initially the transaction to the mempool?
Again: TWO timestamps are required: initial sent (to mempool) and 1st confirmation.
I guess a (new) column "sent time" in History tab is missing. At least optionally
That should be feasible in Electrum.
I don't need absolute exact timestamps. Timestamps +/- 30 seconds would be acceptable.
The closest is the "
locktime (height)" which is the tip (
top block height) when you created the transaction.
But that block height may have been the already tip 10minutes (
on average) before you created the transaction so it not a good indication of the broadcast time.
Like I've mentioned, you need a "
timer", a real-time of that.
On the other hand, a proposal can be requested to Electrum's GitHub Repository as a new feature request issue.
But I doubt the niche use-case isn't worth it for the development plus additional feature that most of the users wont even use.
You're welcome to post it though.
2.) The blocktime is a timestamp without a reference time zone and therefore useless.
Useful actually, the time in blocks are just continuously counting number not represented by any time zone.
Technically; in "
Unix Epoch time", Wiki:
Epoch (
Refer to Unix Epoch)
In Electrum's GUI and blockexplorers, it's just conveniently converted to your machine's local data/time.