Are you looking at writing Java-Canvas files to stream into Obsidian to se and interact with there or are you consuming canvas files directly in the nostr client? What are you finding useful to render the canvas... Something like D3 or somethingore simple?

using obsidian/jsoncanvas to design a nostr canvas spec.

one immediate thing that stands out is that I like how I can put many markdown documents next to each other for reference when editing.

its gonna be pretty cool when I can create a 2d canvas of nostr notes: longform, kind1, anything.

nostr:note1wk5v0lhsuw0ar5e4u3f4v0sawxp47umv4pjsr8x56wlpgjcx7wrqh06fdu