I’ve produced a new JSON token draft based on a convergence proposal discussed with the authors of the other JSON signing proposals. I borrowed portions of this draft with permission from Dirk Balfanz, John Bradley, John Panzer, and Nat Sakimura, and so listed them as co-authors. (You shouldn’t take their being listed as authors as their blanket endorsement of its content, but I appreciate their willingness to let me build upon their work.)
Hopefully we can develop consensus positions on these and any other issues found during IIW. This doc is intended as a further step in that direction.
A detailed comparison of the precursor documents, which led to the convergence proposal incorporated in this draft, is posted on the OAuth working group list.