Bce is BlockChain experiment intended to grasp the essence of blockchain technology. It is basically a bitcoin copycat with some divergencies in protocols, store, etc.
Run in 2 different terminals on the same machine:
./dist/build/bce/bce "(127,0,0,1)" 3666 "(127,0,0,1)" 3999
./dist/build/bce/bce "(127,0,0,1)" 3999 "(127,0,0,1)" 3888
Where first pair "(127,0,0,1)" 3666 is about on which address to bind. Second one "(127,0,0,1)" 3999 is p2p seed node.