but now it is unclear to me how I can verify the download. For example when I follow instruction online see
I end up with unsuccessful validation of the download.
I can't find any information on bitcoin.org on how to verify a download. Assuming the instruction I found is correct this means that SHA256SUMS.asc does not contain a signature for the file I downloaded. With other words, downloads cannot be verified at this point.
[myuser:~/Desktop/bitcoin] [2.5.3] 2 $ gpg --verify SHA256SUMS.asc btc-022.tar.gz
gpg: Signature made Fri 10 Sep 2021 01:29:17 PM CEST
gpg: using RSA key 0CCBAAFD76A2ECE2CCD3141DE2FFD5B1D88CA97D
gpg: Can't check signature: No public key
gpg: Signature made Thu 09 Sep 2021 10:09:04 PM CEST
gpg: using RSA key 152812300785C96444D3334D17565732E08E5E41
gpg: issuer "
[email protected]"
gpg: Can't check signature: No public key
gpg: Signature made Thu 09 Sep 2021 10:16:18 PM CEST
gpg: using RSA key 0AD83877C1F0CD1EE9BD660AD7CC770B81FD22A8
gpg: issuer "
[email protected]"
gpg: Can't check signature: No public key
gpg: Signature made Fri 10 Sep 2021 03:00:35 PM CEST
gpg: using RSA key 590B7292695AFFA5B672CBB2E13FC145CD3F4304
gpg: issuer "
[email protected]"
gpg: Can't check signature: No public key
gpg: Signature made Thu 09 Sep 2021 10:54:01 PM CEST
gpg: using RSA key 28F5900B1BB5D1A4B6B6D1A9ED357015286A333D
gpg: Can't check signature: No public key
gpg: Signature made Fri 10 Sep 2021 04:26:03 PM CEST
gpg: using RSA key 637DB1E23370F84AFF88CCE03152347D07DA627C
gpg: Can't check signature: No public key
gpg: Signature made Fri 10 Sep 2021 03:04:14 AM CEST
gpg: using RSA key CFB16E21C950F67FA95E558F2EEB9F5CC09526C1
gpg: issuer "
[email protected]"
gpg: Can't check signature: No public key
gpg: Signature made Fri 10 Sep 2021 10:03:16 AM CEST
gpg: using RSA key 6E01EEC9656903B0542B8F1003DB6322267C373B
gpg: issuer "
[email protected]"
gpg: Can't check signature: No public key
gpg: Signature made Thu 09 Sep 2021 10:07:53 PM CEST
gpg: using RSA key D1DBF2C4B96F2DEBF4C16654410108112E7EA81F
gpg: issuer "
[email protected]"
gpg: Can't check signature: No public key
gpg: Signature made Fri 10 Sep 2021 09:14:14 AM CEST
gpg: using RSA key 82921A4B88FD454B7EB8CE3C796C4109063D4EAF
gpg: issuer "
[email protected]"
gpg: Can't check signature: No public key
gpg: Signature made Fri 10 Sep 2021 07:33:30 PM CEST
gpg: using RSA key 9DEAE0DC7063249FB05474681E4AED62986CD25D
gpg: Can't check signature: No public key
gpg: Signature made Thu 09 Sep 2021 10:22:36 PM CEST
gpg: using RSA key 9D3CC86A72F8494342EA5FD10A41BDC3F4FAFF1C
gpg: issuer "
[email protected]"
gpg: Can't check signature: No public key
gpg: Signature made Fri 10 Sep 2021 11:59:33 AM CEST
gpg: using RSA key 74E2DEF5D77260B98BC19438099BAD163C70FBFA
gpg: issuer "
[email protected]"
gpg: Can't check signature: No public key