Getting warning using untrusted key! when running gpg verification:
gpg --keyserver hkp://keyserver.ubuntu.com \
--auto-key-retrieve \
--trust-model always \
--verify SHA256SUMS.asc SHA256SUMS
Output and warning:
[#14](/bitcoin-bitcoin/14/) 22.71 gpg: requesting key 0A41BDC3F4FAFF1C from hkp server keyserver.ubuntu.com
[#14](/bitcoin-bitcoin/14/) 22.99 gpg: key 0A41BDC3F4FAFF1C: public key "Aaron Clauson (sipsorcery) <aaron@sipsorcery.com>" imported
[#14](/bitcoin-bitcoin/14/) 22.99 gpg: Total number processed: 1
[#14](/bitcoin-bitcoin/14/) 22.99 gpg: imported: 1
[#14](/bitcoin-bitcoin/14/) 22.99 gpg: Good signature from "Aaron Clauson (sipsorcery) <aaron@sipsorcery.com>" [unknown]
[#14](/bitcoin-bitcoin/14/) 22.99 gpg: WARNING: Using untrusted key!
[#14](/bitcoin-bitcoin/14/) 22.99 gpg: Signature made Thu Nov 17 21:23:22 2022 UTC
[#14](/bitcoin-bitcoin/14/) 22.99 gpg: using RSA key ED9BDF7AD6A55E232E84524257FF9BDBCC301009
[#14](/bitcoin-bitcoin/14/) 22.99 gpg: requesting key 57FF9BDBCC301009 from hkp server keyserver.ubuntu.com
[#14](/bitcoin-bitcoin/14/) 23.34 gpg: key 57FF9BDBCC301009: 3 duplicate signatures removed
[#14](/bitcoin-bitcoin/14/) 23.34 gpg: key 57FF9BDBCC301009: public key "Sjors Provoost <sjors@sprovoost.nl>" imported
[#14](/bitcoin-bitcoin/14/) 23.34 gpg: Total number processed: 1
[#14](/bitcoin-bitcoin/14/) 23.34 gpg: imported: 1
[#14](/bitcoin-bitcoin/14/) 23.34 gpg: Good signature from "Sjors Provoost <sjors@sprovoost.nl>" [unknown]
[#14](/bitcoin-bitcoin/14/) 23.34 gpg: aka "Sjors Provoost <sjors@freedom.nl>" [unknown]
[#14](/bitcoin-bitcoin/14/) 23.34 gpg: WARNING: Using untrusted key!
[#14](/bitcoin-bitcoin/14/) 23.34 gpg: Signature made Tue Nov 22 11:04:28 2022 UTC
[#14](/bitcoin-bitcoin/14/) 23.34 gpg: using RSA key 6A8F9C266528E25AEB1D7731C2371D91CB716EA7
[#14](/bitcoin-bitcoin/14/) 23.34 gpg: issuer "sebastian.falbesoner@gmail.com"
[#14](/bitcoin-bitcoin/14/) 23.86 gpg: requesting key C2371D91CB716EA7 from hkp server keyserver.ubuntu.com
[#14](/bitcoin-bitcoin/14/) 24.12 gpg: key C2371D91CB716EA7: public key "Sebastian Falbesoner (theStack) <sebastian.falbesoner@gmail.com>" imported
[#14](/bitcoin-bitcoin/14/) 24.12 gpg: Total number processed: 1
[#14](/bitcoin-bitcoin/14/) 24.12 gpg: imported: 1
[#14](/bitcoin-bitcoin/14/) 24.13 gpg: Good signature from "Sebastian Falbesoner (theStack) <sebastian.falbesoner@gmail.com>" [unknown]
[#14](/bitcoin-bitcoin/14/) 24.13 gpg: WARNING: Using untrusted key!
[#14](/bitcoin-bitcoin/14/) 24.13 gpg: Signature made Thu Nov 17 19:35:52 2022 UTC
[#14](/bitcoin-bitcoin/14/) 24.13 gpg: using RSA key 28E72909F1717FE9607754F8A7BEB2621678D37D
[#14](/bitcoin-bitcoin/14/) 24.13 gpg: issuer "vertion@protonmail.com"
[#14](/bitcoin-bitcoin/14/) 25.35 gpg: key DA43140F88B4E81F: public key "vertion@protonmail.com <vertion@protonmail.com>" imported
[#14](/bitcoin-bitcoin/14/) 25.35 gpg: Total number processed: 1
[#14](/bitcoin-bitcoin/14/) 25.35 gpg: imported: 1
[#14](/bitcoin-bitcoin/14/) 25.35 gpg: requesting key A7BEB2621678D37D from hkp server keyserver.ubuntu.com
[#14](/bitcoin-bitcoin/14/) 25.58 gpg: key A7BEB2621678D37D: public key "vertion <vertion@protonmail.com>" imported
[#14](/bitcoin-bitcoin/14/) 25.58 gpg: Total number processed: 1
[#14](/bitcoin-bitcoin/14/) 25.58 gpg: imported: 1
[#14](/bitcoin-bitcoin/14/) 25.58 gpg: Good signature from "vertion <vertion@protonmail.com>" [unknown]
[#14](/bitcoin-bitcoin/14/) 25.58 gpg: WARNING: Using untrusted key!