Tendermint's Serverside Blockchain API

 Blockchains are a system for multi-master state machine replication.
 ABCI (Application BlockChain Interface) is an interface that defines
 the boundary between the replication engine (the blockchain), and the
 state machine (the application). By using a socket protocol, Tendermint
 enable a consensus engine running in one process to manage an
 application state running in another.
 .
 Previously, the ABCI was just referred to as TMSP.