The number of mastered in the main Dash has reached an absolute historical maximum at the level of 4939.

In the current version of software v0.12.3.2 (70210) are more than 85% of all mastered.

However, some nodes remain on older versions of the Protocol, despite the warning developers about possible exclusion of such users from billing cycle after the introduction of the “sporco”.

Recall that in early may, the Dash Core developers announced three new proposals to improve the Protocol: special transactions, deterministic lists mastered and simplified check lists mastered.

Masternode — is a specially configured node is full, dividing with the miners, the fee for servicing a network.

Source