Public keys are derived from private keys using cryptography. You basically do that over and over with a random private key each time until you get a public key that has a desired pattern (like starting which a bunch of zeroes at the beginning). Since no one can guess what a public key is going to look like from a private key, you have no choice but to try many different random private keys until you end up with a public key that matches your criteria.
Similar to how Bitcoin blocks are mined.
Cameri /
npub1qq…0n47m
2022-09-01 03:18:48
in reply to nevent1q…tcp6
Author Public Key
npub1qqqqqqyz0la2jjl752yv8h7wgs3v098mh9nztd4nr6gynaef6uqqt0n47mPublished at
2022-09-01 03:18:48Event JSON
{
"id": "e9ecc5640cc08e625cd15603204d5cf979fc43be81a34b5fbf37e4fc801cb32b",
"pubkey": "00000000827ffaa94bfea288c3dfce4422c794fbb96625b6b31e9049f729d700",
"created_at": 1662002328,
"kind": 1,
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"content": "Public keys are derived from private keys using cryptography. You basically do that over and over with a random private key each time until you get a public key that has a desired pattern (like starting which a bunch of zeroes at the beginning). Since no one can guess what a public key is going to look like from a private key, you have no choice but to try many different random private keys until you end up with a public key that matches your criteria.\nSimilar to how Bitcoin blocks are mined.",
"sig": "b4ab8d9f9833445727ac98050c2126dd3ef9fc7653beef68c50279e27fb7107cad49b65710fd9c089f4896ec5d940f7148fffed17a54588592885eaa1b204a35"
}