Cannot tag / add attribute to permanode

[basilboli]

While creating new permanode I cannot add tag or attribute:

How to reproduce

➜  Documents X=$(pk-put permanode)
2021/03/29 17:04:34 Warning: client (B8C50EAF) and server (AF5FD483) keys differ.
➜  Documents echo $X
sha224-c8a67d43b29d899facf85a38b115c24fa33ebaa5322ac6696a93fb9f
➜  Documents pk-put attr $X title "Some title"
2021/03/29 17:04:58 Warning: client (B8C50EAF) and server (AF5FD483) keys differ.
sha224-b7e6de57cf280a9a2fcb70937fe75aa7de2a14084e972f8f6f4a00d5
➜  Documents pk-put attr $X title "Better title"
2021/03/29 17:05:09 Warning: client (B8C50EAF) and server (AF5FD483) keys differ.
sha224-83c31680b3696d5785394957346f89ddc04c4070356483b817efa9b1
➜  Documents pk describe sha224-c8a67d43b29d899facf85a38b115c24fa33ebaa5322ac6696a93fb9f
{
  "meta": {
    "sha224-c8a67d43b29d899facf85a38b115c24fa33ebaa5322ac6696a93fb9f": {
      "blobRef": "sha224-c8a67d43b29d899facf85a38b115c24fa33ebaa5322ac6696a93fb9f",
      "camliType": "permanode",
      "size": 626,
      "permanode": {
        "attr": {},
        "modtime": "0001-01-01T00:00:00Z"
      }
    }
  }
}
➜  Documents pk claims sha224-c8a67d43b29d899facf85a38b115c24fa33ebaa5322ac6696a93fb9f
{
  "claims": null
}
➜  Documents 

I expect attribute and claims fields not to be empty.

Version

perkeep server version
https://perkeep.org/doc/release/0.11
perkeep client version
https://perkeep.org/doc/release/0.11

Have anyone had the similar problem?
Thanks in advance.

P.S. Kudos and thanks for doing this amazing project.

[basilboli]

Ok, I have actually solved the problem by myself by:

1/ copying identity-secring.gpg from the machine running perkeep server to the machine running the client
2/ pk-put init -gpgkey XXXX using the same key id XXXX as the server

I don't know whether this is the right thing to do but it was not quite obvious from the documentation.