sequenceDiagram
    participant user as Alice
    participant photon as photon
    participant  spectrum
     
    user->>photon:create channel between Alice and Bob 
    photon->> spectrum:   call Mesh Token to Approve TokensNetwork
    Note right of photon: this Tx takes about 30 seconds
    photon->>photon: wait Approve Tx packaged
    photon->> spectrum:   call TokensNetwork to open channel 
     Note right of photon: this Tx takes about 30 seconds
    photon->>photon: wait openChannel Tx packaged
    photon->>user: channel created