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I was trying to add the keys to a keyring to verify the bitcoin core download, but it looks like the gpg keys are all expired.
The home website for Bitcoin Core says
Refresh expired keys using:
gpg --keyserver hkps://keys.openpgp.org --refresh-keys
I would obtain Bitcoin Core from that bitcoincore.org website and not from bitcoin.org.
For signature checking to be more meaningful as a check on authorship or correctness rather than merely a checksum of download integrity, it is probably important to obtain your GPG public keys from a source that is as independent as possible from the website from which you download the source or binaries. Otherwise you could download doctored code and faked signatures & keys from a hacked or impostor website. This independence appears to be the case with software from bitcoincore.org and keys from openpgp.org or elsewhere (if I understand correctly).
You are correct that bitcoin.org currently (2022-02-17) has old expired keys.
After visiting https://bitcoin.org/en/download and clicking "Bitcoin Core Release Signing Keys" v0.11.0+ I also see an expired key.
C> gpg --import laanwj-releases.asc gpg: key 36C2E964: public key "Wladimir J. van der Laan (Bitcoin Core binary release signing key) <laanwj@gmail.com>" imported gpg: Total number processed: 1 gpg: imported: 1 (RSA: 1) gpg: no ultimately trusted keys found C> gpg --list-keys ---------------------------------------------- pub 4096R/36C2E964 2015-06-24 [expired: 2022-02-10] uid Wladimir J. van der Laan (Bitcoin Core binary release signing key) <laanwj@gmail.com>
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