This is a revocation certificate for the OpenPGP key:

pub   rsa3072 2025-03-05 [SC] [expires: 2027-03-05]
      C8557D728A03B90EB3BBB7F0ADE686B66D16A35B
uid          Artyom Pischulin

A revocation certificate is a kind of "kill switch" to publicly
declare that a key shall not anymore be used.  It is not possible
to retract such a revocation certificate once it has been published.

Use it to revoke this key in case of a compromise or loss of
the secret key.  However, if the secret key is still accessible,
it is better to generate a new revocation certificate and give
a reason for the revocation.  For details see the description of
of the gpg command "--generate-revocation" in the GnuPG manual.

To avoid an accidental use of this file, a colon has been inserted
before the 5 dashes below.  Remove this colon with a text editor
before importing and publishing this revocation certificate.

:-----BEGIN PGP PUBLIC KEY BLOCK-----
Comment: This is a revocation certificate

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FLyf57qL0riX8TopBryt3ws/Trdh0r3yeDwsoFhSRcU//WO7CXF83Gz4IiI6imXA
i3n8b54osbzigHCuc3/6OnWcp7EQX1sJwCA4NpBxWQ929Qd+u4XQBgpxZfJ7Rhij
loW+dGYp9gGC
=ev6l
-----END PGP PUBLIC KEY BLOCK-----