# description
A profile — the displayable identity for any agent, person, group, or space. Lowest common denominator of a presence in the system.

# properties.avatar.description
Optional avatar image as a Media object.

# properties.links.description
External links — websites, social profiles, and other URIs.

# properties.links.items.properties.label.description
Optional short display label for the link.

# properties.links.items.properties.description.description
Optional longer description of the link.

# $defs.media.properties.uri.description
Canonical reference to the media — an attachment://<id> ref (opaque, host-scoped) or any other URI. Always present.

# $defs.media.properties.cid.description
Optional content commitment — CIDv1, raw codec (0x55), sha2-256, base32 lowercase, computed over the media bytes exactly as stored/served. May be absent when no cid has been computed for the media.

# $defs.media.properties.href.description
Optional resolution hint — a plain URL where the bytes may currently be fetched. Implementation-dependent and non-normative; carries no integrity promise.