PPA repository security can not be verified on Ubuntu 19.04 #16637

Recently running Ubuntu 19.04, I noticed the following when adding the official bitcoin PPA

After running:

$ sudo add-apt-repository ppa:bitcoin/bitcoin
$ sudo apt update

I get the following error:

...
W: The repository 'http://ppa.launchpad.net/bitcoin/bitcoin/ubuntu disco Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.

I have to run the following to actually fetch the update information:

$ sudo apt-get update --allow-insecure-repositories

I think this is an easy fix given the right credentials for the PPA repo?

Even with the --allow-insecure-repositories param I can not seem to run:

sudo apt install bitcoind

It still doesn't find the package. :( I will compile it in the mean time, as I should anyway :P

The ppa is no longer supported. Where did you get those install instructions from?

The ppa link is the official one, for the rest: trial and error?

If it is no longer supported, does that mean the server is not running anymore? Or just running and nobody is updating it? Is there an alternative? :)

By official, I mean "official". Or, assumed to be trustworthy by the community (literally any of the "install guides" out there)

Use the snap instead if you want a release which is being updated by a package manager

Indeed, if you are running Ubuntu, you are better of with the snap package.

$ snap info bitcoin-core