Meeting_notes_2021-06-03-arj-mix

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  //     X
  //     |
  //     A   (root)
  //    / \
  //   B   C
  //       |
  //       D
  //
  //

  B* = ((X, A), B)
  D* = (((X, A), C), D)

  (B*, D*) === (D*, B*)
  
  
  (B, (C, D)) ===  ((C, D), D)


B = invite Arj-phone
C = invite Arj-phone
D = Arj-phone consent


B*
{
  invited: { arj: 1 }
  consented: { arj: -1 }
  member: {}
}


D*
{
  invited: { arj: 1 }
  consented: { arj: 1 }
  member: {}
}



----------------------------------

  //     X
  //     |
  //     A   (root)
  //    / \
  //   B   C  two invites
  //   |   |
  //   |   D  a consent
  //    \ /
  //     E    another consent (if you want)
  //
  
  
missing:
  - entrust
  - proof-of-key? reduce maybe ok
  - redirect (simple)
  - attestation (simple)

  - avatar information (name, image, description etc.)

format of messages PR to spec
  
tidied reduced state, to make it easier to reason about