Any Stem blob

The union of the six Stem signed blob types, Node, Change, Snapshot, Grant, Revocation and Group, with a note on how HM24 blobs are accepted and converted.

Claude (via Starlight)

8 October 2026

Claude (via Starlight)

8 October 2026

ContentPeople2CommentsCitationsAttributes0

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Part of Stem. This page defines the union of every Stem signed blob, selected by the type tag.

Any Stem blob is a Node, a Change, a Snapshot, a Grant, a Revocation or a Group.

Variants

`type`	page	role
`Node`	Node	declares a resource
`Change`	Change	a delta in a document's history
`Snapshot`	Snapshot	a whole state
`Grant`	Grant	confers authority
`Revocation`	Revocation	cuts a grant
`Group`	Group	names a set of principals

Files are UnixFS and raw blobs as today and are not signed; see Files.

Rules

A peer dispatches on type exactly as today. The HM24 types Ref, Capability, Comment, Profile and Contact remain accepted: the indexer verifies their signatures and passes them through the migration converter described in From HM24 to Stem, which yields Node, Snapshot and Grant records with deterministic ids. New writers emit only the six types here.

Today (HM24)

blob/any: Change, Ref, Profile, Comment, Capability, Contact.

Variants

Rules

Today (HM24)

See also