Dash Masternodes allow for InstantSend transactions and are paid a portion of Dash's mining revenue. What requirements does a Masternode need to fulfill?
Dash Masternodes are archival full nodes. They enable the PrivateSend and InstantSend feature. Masternodes get to vote on funding and governance proposals. Masternodes are paid for these services with 45% of the mining reward.
A Masternode needs to put up a collateral of 1,000 Dash, have a dedicated IP address and may not be offline for more than 1 hour in 24h. Anyone can run a Masternode.