Restarting work on the zCap (Authorization Capabilities) work item

Hi all,
A few weeks ago on the CCG call discussing the various work items, I
brought up the subject of zCaps (Authorization Capabilities), which is an
existing (if somewhat dormant) CCG work item, at
https://github.com/w3c-ccg/zcap-spec. And several people have expressed
interest in working on that spec again.

In parallel, the Delegated Authorization Task Force of the Trusted AI Agent
WG at DIF has been evaluating various delegated authorization
specifications (including zCaps, various OAuth-based specs, UCANs, GNAP,
and many others), and has determined that there's not many authorization
options out there with chained delegation ability (basically, zCaps
(JSON-based) and UCANs (DAG-CBOR-based) are the only ones). This is
especially relevant and timely due to all the momentum and activity behind
agent-based development, and the lack of authorization and guardrails in
that area.

To that end, I'd like to restart work on the zCap spec here at the CCG. The
current spec version is v0.3, but it's been out of sync with the way zcaps
have been deployed to production by the TruAge project, Digital Bazaar,
DCC, and others.
So our first goal would be to just update the spec to v0.4, to match the
existing implementations.

It would be also great to start work on version v0.5, as several new use
cases and feature requests have come up in the meantime.

So, couple of questions of the group:

1. Would anyone like to help edit the spec?

2. Would folks be interested in a zCap task force call, either monthly or
bi-weekly, to work on the spec?

Thanks!