We stipulate that each node mining burst blocks will receive UtilityNet coins(UNC) as block re- wards, in order to incentivize the rapid clustering of computational power, we set the first n height burst block rewards for 100 UNC, n to n1 for 75 UNC, n1 to n2 for 50 UNC, from the height of n2 it becomes 30 UNC, and follow the regular exponen- tial decreasing mechanism: each height reward de- creases 0.01exp(−β(H − n2 )) UNC, as shown in the following figure ( where H is the block height and β is the decay factor). This mechanism in- centivizes high and rapidly decaying rewards in the early stage, which motivates miners to enter quickly and build up the computational ecosystem; in the later stage, the token rewards are in a steady and slow decreasing process, maintaining a stable ecosystem [15, 22].
Node miners who mine blocks and are rewarded with UNC tokens are required to provide on-chain transaction or data information bookkeep- ing services. For example, the purchase transaction of chip computation and the POCI process in section 2.4, the two stages of PROI we defined in the previous section will also be recorded on the block as important digital information.
Figure 5: Relationship between block reward and block height
Figure 6: Relationship between block reward and block height
