Notice: Pyrk v0.12.4.1 is the latest Required Version. [Upgrade] - Masternodes: Collateral increases to 2500 Pyrk at Block 100,000. You can start using the increased amount at block 80K.
Mining difficulty adjusts automatically every block for each algorithm.
The adjustment aims to maintain an average block-mining time of 1.5 minutes.
A growth in the difficulty indicates that the average block-mining time during the previous adjustment epoch was less than 1.5 minutes (due to more miners joining the network and 'searching' / 'mining' for blocks).
A drop in difficulty indicates miners have left the network so finding each block is adjusted to be 'easier' for the smaller number remaining.