You can write me by e-mail at contact at the domain name of this site, or you can use the encrypted contact form.
We are present on OpenBazaar most of the time. Our handle at (registered at onename) is @entropx, but as this seems to be defunct in Openbazaar for the moment, our OpenBazaar user ID is:
QmVAPw8DcCLuh9MB9a7NE6PyLAeYjiiuXZwxS4isddP94y
Our public PGP key corresponding to the above suggested e-mail address is:
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v2
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-----END PGP PUBLIC KEY BLOCK-----
The fingerprint is:
4096R/674A2214
as one can verify on public PGP key servers.