digraph blockchain {

//splines = "ortho";
rankdir=LR;
size=6.66;
node [ shape = "box", penwidth = 1.75 ];
edge [ penwidth = 1.75 ];
penwidth = 1.75;
nodesep = 0.3;

        _transactions0 [ label = "Block 1\nTransactions", width = 2 ];
    subgraph cluster_block0header {
        _blockHeader0 [ style = "invis", label = "", width = 0, height = 0 ];
        hashBlock9 [label = "Hash Of Previous\nBlock Header", shape = box];
        hashMerkleRoot0 [label = "Merkle Root"];

        label = "Block 1\nHeader"
    }



    _transactions1 [ label = "Block 2\nTransactions", width = 2 ];

    subgraph cluster_block1header {
        _blockHeader1 [ style = "invis", label = "", width = 0, height = 0 ];
        hashBlock0 [label = "Hash Of Previous\nBlock Header", shape = box];
        hashMerkleRoot1 [label = "Merkle Root"];
        label = "Block 2\nHeader"
    }


    _transactions2 [ label = "Block 3\nTransactions", width = 2 ];
    _block2 [ style = "invis", label = "", width = 0, height = 0 ];
    subgraph cluster_block2header {
        _blockHeader2 [ style = "invis", label = "", width = 0, height = 0 ];
        hashBlock1 [label = "Hash Of Previous\nBlock Header", shape = box];
        hashMerkleRoot2 [label = "Merkle Root"];
        label = "Block 3\nHeader"
    }
invis0 [ style = "invis", label = "", width = 0, height = 0 ];
invis1 [ style = "invis", label = "", width = 0, height = 0 ];

invis0 -> hashBlock9 [ style = dotted ];

_blockHeader0 -> hashBlock0 [ minlen = 2 ];
//hashBlock0 -> hashBlock1 [ style = "invis" ];
_blockHeader1 -> hashBlock1 [ minlen = 2 ];

hashMerkleRoot0 -> hashMerkleRoot1 -> hashMerkleRoot2 [ style = invis, weight = 100, minlen = 2 ];

_transactions0 -> hashMerkleRoot0 [constraint = false, minlen = 1];
_transactions1 -> hashMerkleRoot1 [constraint = false, minlen = 1];
_transactions2 -> hashMerkleRoot2 [constraint = false, minlen = 1];

_transactions0 -> _transactions1 -> _transactions2 [ style = "invis", minlen = 2 ];
invis1 -> _transactions0 [ style = "invis", minlen = 1 ];


label = "\nSimplified Bitcoin Block Chain";
}