How to get a public key registered with a key server

Prerequisites

You need a personal or company GPG key. If you don't have one, this explains how to generate a GPG key.

Export your public key

gpg --export --armor john@example.com > john_doe.pub

-----BEGIN PGP PUBLIC KEY BLOCK-----
mQGiBEm7B54RBADhXaYmvUdBoyt5wAi......=vEm7B54RBADh9dmP
-----END PGP PUBLIC KEY BLOCK-----

About the arguments:

--export Export the public key information of the key belonging to john@example.com
--armor Create a base64 encoded ascii string rather than using a binary format
john@example.com The key id to export
> john_doe.pub Save the output into this file

Gmail - Temp Mail Hot

While using temp mail is a "hot" productivity hack, it comes with risks:

: Keeps your main Gmail inbox clean of newsletters and marketing spam .

You can turn one Gmail address into unlimited aliases using the : gmail temp mail hot

His current task was delicate: infiltrate a high-security forum known for trading leaked prototypes. To get in, he couldn’t use a traceable IP, and he certainly couldn't use his real identity. He needed a disposable gateway The Burner Protocol

The real beauty of this approach is that it turns your inbox into an active tool for data privacy and organization. If you provide a specific alias to an online retailer and later start receiving spam addressed to that unique alias, you know exactly who sold or leaked your email address. While using temp mail is a "hot" productivity

One of the most popular services, offering a clean interface and instant email generation. It provides a reliable address that you can keep active as long as you have the browser tab open. 2. 10 Minute Mail

A disposable or temporary email is a short-term address used for quick verifications. While Google does not offer a native, self-destructing temporary email service, the phrase refers to the trend of using secondary "burner" addresses, advanced Google aliases, or third-party platforms built specifically to shield your primary Gmail account. Why the Trend is "Hot" Right Now He needed a disposable gateway The Burner Protocol

The "Hot Mail" dashboard pinged. A single, unread message appeared in the temporary browser window.

: If you register for an important service using a ten-minute email, you will never be able to reset your password or receive critical security alerts if you get locked out.

You can create an infinite number of "temporary" addresses on the fly.

Alternate way to submit your public key to the key servers using the CLI

gpg --keyid-format LONG --list-keys john@example.com
pub   rsa4096/ABCDEF0123456789 2018-01-01 [SCEA] [expires: 2021-01-01]
      ABCDEF0123456789ABCDEF0123456789
uid              [ ultimate ] John Doe <john@example.com>

This shows the 16-byte Key-ID right after the key-type and key-size. In this example it's the highlighted part of this line:

pub rsa4096/ABCDEF0123456789 2018-01-01 [SCEA] [expires: 2021-01-01]

The next step is to use this Key-ID to send it to the keyserver, in our case the MIT one.

gpg --keyserver keyserver.ubuntu.com --send-keys ABCDEF0123456789

Congratulations, you published your public key.

Please allow a couple of minutes for the servers to replicate that information before starting to use the key.

General notes on Security

A keyserver does not make any claims about authenticity. It merely provides an automated means to get a public key based on its ID. It's up to the user to decide whether the result is to be trusted, as in whether or not to import the public key to the local chain. Do not blindly import a key but at least verify its fingerprint. The phar.io fingerprint information can be found in the footer.
Instead of using a keyserver, public keys can of course also be imported directly. Linux distributions for example do that by providing their keys in release-packages or the base OS installation image. Phive will only contact a keyserver in case the key used for signing is not already known, a.k.a can not be found in the local chain.