sequenceDiagram
  actor a as Author
  participant b as Blockchain
  actor r1 as Reviewer 1
  actor r2 as Reviewer 2
  a ->> b: data object<br/>{instruction, response, source}
  b ->> b: pick reviewers
  r1 ->> b: commit vote:<br/>accept OR reject OR feedback OR refer OR skip
  r2 ->> b: commit vote:<br/>accept OR reject OR feedback OR refer OR skip
  r1 ->> b: reveal vote
  r2 ->> b: reveal vote
  b ->> b: decision
