# Blockchain Parameters¶

## Blockchain parameters¶

Parameter Value Description
Maximum block size 5242880 The maximum size of a block in bytes.
Initial block reward 100.00000000 The initial reward in DREP for mining a block.
Block reward multiplier 50/100 After each cycle, the reward is halved.
Block reward change 8409600 blocks The number of blocks between block reward changes. This occurs approximately every 4 years.
Block reward share 80 20/N The miner node receives 80% of the reward, and the other verification nodes divide the remaining 20% of the reward equally.
MaxGasLimit 360000000 Maximum gas available for each block
MinGasLimit 180000000 Minimum the gas limit may ever be.

## bft network parameters¶

Parameter Value Description
Number of nodes 21 This many tickets will be chosen to vote each block.