[
  12, / type code                                          /
  2,  / block number                                       /
  1,  / flags - block must be replicated in every fragment /
  0,  / CRC type                                           /
  h'8101020182028202018482014c5477656c766531323132313282020182035818
    69c411276fecddc4780df42c8a2af89296fabf34d7fae7008204008181820150
    efa4b5ac0108e3816c5606479801bc04'
]