diff --git a/genesis.go b/genesis.go
index f61e572f..135d0f28 100644
--- a/genesis.go
+++ b/genesis.go
@@ -140,3 +140,31 @@ var testNet3GenesisBlock = btcwire.MsgBlock{
 	},
 	Transactions: []*btcwire.MsgTx{&genesisCoinbaseTx},
 }
+
+// simNetGenesisHash is the hash of the first block in the block chain for the
+// simulation test network.
+var simNetGenesisHash = btcwire.ShaHash{
+	0xf6, 0x7a, 0xd7, 0x69, 0x5d, 0x9b, 0x66, 0x2a,
+	0x72, 0xff, 0x3d, 0x8e, 0xdb, 0xbb, 0x2d, 0xe0,
+	0xbf, 0xa6, 0x7b, 0x13, 0x97, 0x4b, 0xb9, 0x91,
+	0x0d, 0x11, 0x6d, 0x5c, 0xbd, 0x86, 0x3e, 0x68,
+}
+
+// simNetGenesisMerkleRoot is the hash of the first transaction in the genesis
+// block for the simulation test network.  It is the same as the merkle root for
+// the main network.
+var simNetGenesisMerkleRoot = genesisMerkleRoot
+
+// simNetGenesisBlock defines the genesis block of the block chain which serves
+// as the public transaction ledger for the simulation test network.
+var simNetGenesisBlock = btcwire.MsgBlock{
+	Header: btcwire.BlockHeader{
+		Version:    1,
+		PrevBlock:  btcwire.ShaHash{},        // 0000000000000000000000000000000000000000000000000000000000000000
+		MerkleRoot: simNetGenesisMerkleRoot,  // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
+		Timestamp:  time.Unix(1401292357, 0), // 2014-05-28 15:52:37 +0000 UTC
+		Bits:       0x207fffff,               // 545259519 [7fffff0000000000000000000000000000000000000000000000000000000000]
+		Nonce:      2,
+	},
+	Transactions: []*btcwire.MsgTx{&genesisCoinbaseTx},
+}
diff --git a/genesis_test.go b/genesis_test.go
index 1f4f993e..fd791ed7 100644
--- a/genesis_test.go
+++ b/genesis_test.go
@@ -100,6 +100,36 @@ func TestTestNet3GenesisBlock(t *testing.T) {
 	}
 }
 
+// TestSimNetGenesisBlock tests the genesis block of the simulation test network
+// for validity by checking the encoded bytes and hashes.
+func TestSimNetGenesisBlock(t *testing.T) {
+	// Encode the genesis block to raw bytes.
+	var buf bytes.Buffer
+	err := btcnet.SimNetParams.GenesisBlock.Serialize(&buf)
+	if err != nil {
+		t.Fatalf("TestSimNetGenesisBlock: %v", err)
+	}
+
+	// Ensure the encoded block matches the expected bytes.
+	if !bytes.Equal(buf.Bytes(), simNetGenesisBlockBytes) {
+		t.Fatalf("TestSimNetGenesisBlock: Genesis block does not "+
+			"appear valid - got %v, want %v",
+			spew.Sdump(buf.Bytes()),
+			spew.Sdump(simNetGenesisBlockBytes))
+	}
+
+	// Check hash of the block against expected hash.
+	hash, err := btcnet.SimNetParams.GenesisBlock.BlockSha()
+	if err != nil {
+		t.Fatalf("BlockSha: %v", err)
+	}
+	if !btcnet.SimNetParams.GenesisHash.IsEqual(&hash) {
+		t.Fatalf("TestSimNetGenesisBlock: Genesis block hash does "+
+			"not appear valid - got %v, want %v", spew.Sdump(hash),
+			spew.Sdump(btcnet.SimNetParams.GenesisHash))
+	}
+}
+
 // genesisBlockBytes are the wire encoded bytes for the genesis block of the
 // main network as of protocol version 60002.
 var genesisBlockBytes = []byte{
@@ -222,3 +252,44 @@ var testNet3GenesisBlockBytes = []byte{
 	0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, 0x1d, 0x5f, /* |.Lp+k.._|*/
 	0xac, 0x00, 0x00, 0x00, 0x00, /* |.....|    */
 }
+
+// simNetGenesisBlockBytes are the wire encoded bytes for the genesis block of
+// the simulation test network as of protocol version 70002.
+var simNetGenesisBlockBytes = []byte{
+	0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
+	0x00, 0x00, 0x00, 0x00, 0x3b, 0xa3, 0xed, 0xfd, /* |....;...| */
+	0x7a, 0x7b, 0x12, 0xb2, 0x7a, 0xc7, 0x2c, 0x3e, /* |z{..z.,>| */
+	0x67, 0x76, 0x8f, 0x61, 0x7f, 0xc8, 0x1b, 0xc3, /* |gv.a....| */
+	0x88, 0x8a, 0x51, 0x32, 0x3a, 0x9f, 0xb8, 0xaa, /* |..Q2:...| */
+	0x4b, 0x1e, 0x5e, 0x4a, 0x45, 0x06, 0x86, 0x53, /* |K.^J)._I| */
+	0xff, 0xff, 0x7f, 0x20, 0x02, 0x00, 0x00, 0x00, /* |......+|| */
+	0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, /* |........| */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, /* |........| */
+	0xff, 0xff, 0x4d, 0x04, 0xff, 0xff, 0x00, 0x1d, /* |..M.....| */
+	0x01, 0x04, 0x45, 0x54, 0x68, 0x65, 0x20, 0x54, /* |..EThe T| */
+	0x69, 0x6d, 0x65, 0x73, 0x20, 0x30, 0x33, 0x2f, /* |imes 03/| */
+	0x4a, 0x61, 0x6e, 0x2f, 0x32, 0x30, 0x30, 0x39, /* |Jan/2009| */
+	0x20, 0x43, 0x68, 0x61, 0x6e, 0x63, 0x65, 0x6c, /* | Chancel| */
+	0x6c, 0x6f, 0x72, 0x20, 0x6f, 0x6e, 0x20, 0x62, /* |lor on b| */
+	0x72, 0x69, 0x6e, 0x6b, 0x20, 0x6f, 0x66, 0x20, /* |rink of | */
+	0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x20, 0x62, /* |second b| */
+	0x61, 0x69, 0x6c, 0x6f, 0x75, 0x74, 0x20, 0x66, /* |ailout f| */
+	0x6f, 0x72, 0x20, 0x62, 0x61, 0x6e, 0x6b, 0x73, /* |or banks| */
+	0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0xf2, 0x05, /* |........| */
+	0x2a, 0x01, 0x00, 0x00, 0x00, 0x43, 0x41, 0x04, /* |*....CA.| */
+	0x67, 0x8a, 0xfd, 0xb0, 0xfe, 0x55, 0x48, 0x27, /* |g....UH'| */
+	0x19, 0x67, 0xf1, 0xa6, 0x71, 0x30, 0xb7, 0x10, /* |.g..q0..| */
+	0x5c, 0xd6, 0xa8, 0x28, 0xe0, 0x39, 0x09, 0xa6, /* |\..(.9..| */
+	0x79, 0x62, 0xe0, 0xea, 0x1f, 0x61, 0xde, 0xb6, /* |yb...a..| */
+	0x49, 0xf6, 0xbc, 0x3f, 0x4c, 0xef, 0x38, 0xc4, /* |I..?L.8.| */
+	0xf3, 0x55, 0x04, 0xe5, 0x1e, 0xc1, 0x12, 0xde, /* |.U......| */
+	0x5c, 0x38, 0x4d, 0xf7, 0xba, 0x0b, 0x8d, 0x57, /* |\8M....W| */
+	0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, 0x1d, 0x5f, /* |.Lp+k.._|*/
+	0xac, 0x00, 0x00, 0x00, 0x00, /* |.....|    */
+}
diff --git a/params.go b/params.go
index 10c612de..fb0c4908 100644
--- a/params.go
+++ b/params.go
@@ -30,6 +30,10 @@ var (
 	// can have for the test network (version 3).  It is the value
 	// 2^224 - 1.
 	testNet3PowLimit = new(big.Int).Sub(new(big.Int).Lsh(bigOne, 224), bigOne)
+
+	// simNetPowLimit is the highest proof of work value a Bitcoin block
+	// can have for the simulation test network.  It is the value 2^255 - 1.
+	simNetPowLimit = new(big.Int).Sub(new(big.Int).Lsh(bigOne, 255), bigOne)
 )
 
 // Checkpoint identifies a known good point in the block chain.  Using
@@ -220,6 +224,49 @@ var TestNet3Params = Params{
 	PrivateKeyID:     0xef,
 }
 
+// SimNetParams defines the network parameters for the simulation test Bitcoin
+// network.  This network is similar to the normal test network except it is
+// intended for private use within a group of individuals doing simulation
+// testing.  The functionality is intended to differ in that the only nodes
+// which are specifically specified are used to create the network rather than
+// following normal discovery rules.  This is important as otherwise it would
+// just turn into another public testnet.
+var SimNetParams = Params{
+	Name:        "simnet",
+	Net:         btcwire.SimNet,
+	DefaultPort: "18555",
+
+	// Chain parameters
+	GenesisBlock:           &simNetGenesisBlock,
+	GenesisHash:            &simNetGenesisHash,
+	PowLimit:               simNetPowLimit,
+	PowLimitBits:           0x207fffff,
+	SubsidyHalvingInterval: 150,
+	ResetMinDifficulty:     true,
+
+	// Checkpoints ordered from oldest to newest.
+	Checkpoints: nil,
+
+	// Reject version 1 blocks once a majority of the network has upgraded.
+	// 75% (75 / 100)
+	BlockV1RejectNumRequired: 75,
+	BlockV1RejectNumToCheck:  100,
+
+	// Ensure coinbase starts with serialized block heights for version 2
+	// blocks or newer once a majority of the network has upgraded.
+	// 51% (51 / 100)
+	CoinbaseBlockHeightNumRequired: 51,
+	CoinbaseBlockHeightNumToCheck:  100,
+
+	// Mempool parameters
+	RelayNonStdTxs: true,
+
+	// Encoding magics
+	PubKeyHashAddrID: 0x3f, // starts with S
+	ScriptHashAddrID: 0x7b, // starts with s
+	PrivateKeyID:     0x64, // starts with 4 (uncompressed) or F (compressed)
+}
+
 var (
 	// ErrDuplicateNet describes an error where the parameters for a Bitcoin
 	// network could not be set due to the network already being a standard
@@ -233,11 +280,13 @@ var (
 	pubKeyHashAddrIDs = map[byte]struct{}{
 		MainNetParams.PubKeyHashAddrID:  struct{}{},
 		TestNet3Params.PubKeyHashAddrID: struct{}{}, // shared with regtest
+		SimNetParams.PubKeyHashAddrID:   struct{}{},
 	}
 
 	scriptHashAddrIDs = map[byte]struct{}{
 		MainNetParams.ScriptHashAddrID:  struct{}{},
 		TestNet3Params.ScriptHashAddrID: struct{}{}, // shared with regtest
+		SimNetParams.ScriptHashAddrID:   struct{}{},
 	}
 )