8FF1 A51E 97BA FCA9 2B88 C435 5F6F D812 150D 841B
(captured above as body.key.fingerprint), yielding the PGP signature:
-----BEGIN PGP MESSAGE-----
Version: GnuPG v2.0.22 (MingW32)
owGbwMvMwMRYl/5hd8QqkZeMpw+sSWIINsmQrFZKyk+pVLKqVspOBVNpmXnpqUUF
RZl5JUpWShZpaYaJpoapluZJiWnJiZZGSRYWySbGpqZpZmkpFoZGhqYGKRYmhklK
OkoZ+cUgHUBjkhKLU/Uy84FiQE58ZgpQ1NTNzM0Fot4FqN4JKFcKlkhKNLE0ME0y
TDM0NzdLMzQ2SEo0tzAwTjY3sUwzSzUwACksTi3KS8xNBapOLC5JLVKq1VECCpVl
JqeCHAyVSs8syShNQlWem1mcnJGom5iTlgbSVFJZABItT02Kh+qPT8rMSwF6GKit
LLWoODM/T8nKEKgyuSQTZIChsaWppYmxibGhjlJqRUFmUWp8JkiFqbmZhQEQ6CgV
FKWWKVnllebkgNxUmJcPlAValJgOtKc4Mz0vsaS0KFWptpNJhoWBkYmBjZUJFOgM
XJwCsKjIuC/AMNX48aF9krOKrZQ8Zb5NDztep7sj523zYpe38sneP33Y0gv+bpHT
WPnBbdfaxzkno6oK21cYysgvUb2hXxnELLdxX2NSDIPIaSeOW/efc509rjGj/5i+
z06Pj/tabILaWiM/aKqfi22+s/LmPvbXq185RkoveaeeMWPbvjPhfrYfb+k0uhxy
WLvG/NeFhqwTJ/tsOI4IdCjMzA81sbwxSVDPWf3IjqsCDj/Y//3JPrJPJGAp0636
E1Oc+J8sd91ZszuVm/HGncu6xU7TpZuYW8R4E7edKS9b29IXX+/7wYln3+abxw0Z
d09RackOeDUj5kzju+X6HpHztbL3+m9yEz9r6rd33/np83q/cFWG75eTNdM6auBp
fOCSQaeFu/6edepnW6aImYlUzbHPq4z41SUq7PSaz9h+Vp18jI7/TIMjphsYXxzt
aXJP/C5Xd35nwL+9yQfFKmZdSa04nnveusbKwPr0nvVXz6jzhvqtTatqZ3u68NjT
ojeTRCLUDc5Ji15YL1Jd+egog2x41F79H38Vrpt37pscX7hM7N3CGtsVVQVNezeF
HVrxX5TpY4PFPLuVS1Xle30/CNTvd3l3Y1WSQnvjD4s5Ce3hCnE8h/QZ39haWou3
pbc8frVoYfEuiz7NN/PureQ9KLp43eL1jJO/ptfZv/nMGJobpZjZOEXr7ywm061W
Stc/pYftSzS5Ei7y3HTbhBrn/a4A
=vSii
-----END PGP MESSAGE-----
And finally, I am proving ownership of the github account by posting this as a gist.
Consider the keybase command line program.
# look me up
keybase id aster
# encrypt a message to me
keybase encrypt aster -m 'a secret message...'
# ...and more...