EX1U-6 MAT CTRCT 2 f1u031218ex6-1_datchat.htm AGREEMENT AND PLAN OF MERGER, DATED AS OF MARCH 12, 2018, BY AND AMONG SPHERIX INCORPORATED, SPHERIX MERGER SUBSIDIARY INC., DATCHAT, INC. AND DARIN MYMAN AGREEMENT AND PLAN OF MERGER by and among SPHERIX...