diff --git a/genesis.go b/genesis.go
new file mode 100644
index 00000000..f61e572f
--- /dev/null
+++ b/genesis.go
@@ -0,0 +1,142 @@
+// Copyright (c) 2014 Conformal Systems LLC.
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
+package btcnet
+
+import (
+	"github.com/conformal/btcwire"
+	"time"
+)
+
+// genesisCoinbaseTx is the coinbase transaction for the genesis blocks for
+// the main network, regression test network, and test network (version 3).
+var genesisCoinbaseTx = btcwire.MsgTx{
+	Version: 1,
+	TxIn: []*btcwire.TxIn{
+		{
+			PreviousOutpoint: btcwire.OutPoint{
+				Hash:  btcwire.ShaHash{},
+				Index: 0xffffffff,
+			},
+			SignatureScript: []byte{
+				0x04, 0xff, 0xff, 0x00, 0x1d, 0x01, 0x04, 0x45, /* |.......E| */
+				0x54, 0x68, 0x65, 0x20, 0x54, 0x69, 0x6d, 0x65, /* |The Time| */
+				0x73, 0x20, 0x30, 0x33, 0x2f, 0x4a, 0x61, 0x6e, /* |s 03/Jan| */
+				0x2f, 0x32, 0x30, 0x30, 0x39, 0x20, 0x43, 0x68, /* |/2009 Ch| */
+				0x61, 0x6e, 0x63, 0x65, 0x6c, 0x6c, 0x6f, 0x72, /* |ancellor| */
+				0x20, 0x6f, 0x6e, 0x20, 0x62, 0x72, 0x69, 0x6e, /* | on brin| */
+				0x6b, 0x20, 0x6f, 0x66, 0x20, 0x73, 0x65, 0x63, /* |k of sec|*/
+				0x6f, 0x6e, 0x64, 0x20, 0x62, 0x61, 0x69, 0x6c, /* |ond bail| */
+				0x6f, 0x75, 0x74, 0x20, 0x66, 0x6f, 0x72, 0x20, /* |out for |*/
+				0x62, 0x61, 0x6e, 0x6b, 0x73, /* |banks| */
+			},
+			Sequence: 0xffffffff,
+		},
+	},
+	TxOut: []*btcwire.TxOut{
+		{
+			Value: 0x12a05f200,
+			PkScript: []byte{
+				0x41, 0x04, 0x67, 0x8a, 0xfd, 0xb0, 0xfe, 0x55, /* |A.g....U| */
+				0x48, 0x27, 0x19, 0x67, 0xf1, 0xa6, 0x71, 0x30, /* |H'.g..q0| */
+				0xb7, 0x10, 0x5c, 0xd6, 0xa8, 0x28, 0xe0, 0x39, /* |..\..(.9| */
+				0x09, 0xa6, 0x79, 0x62, 0xe0, 0xea, 0x1f, 0x61, /* |..yb...a| */
+				0xde, 0xb6, 0x49, 0xf6, 0xbc, 0x3f, 0x4c, 0xef, /* |..I..?L.| */
+				0x38, 0xc4, 0xf3, 0x55, 0x04, 0xe5, 0x1e, 0xc1, /* |8..U....| */
+				0x12, 0xde, 0x5c, 0x38, 0x4d, 0xf7, 0xba, 0x0b, /* |..\8M...| */
+				0x8d, 0x57, 0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, /* |.W.Lp+k.| */
+				0x1d, 0x5f, 0xac, /* |._.| */
+			},
+		},
+	},
+	LockTime: 0,
+}
+
+// genesisHash is the hash of the first block in the block chain for the main
+// network (genesis block).
+var genesisHash = btcwire.ShaHash{
+	0x6f, 0xe2, 0x8c, 0x0a, 0xb6, 0xf1, 0xb3, 0x72,
+	0xc1, 0xa6, 0xa2, 0x46, 0xae, 0x63, 0xf7, 0x4f,
+	0x93, 0x1e, 0x83, 0x65, 0xe1, 0x5a, 0x08, 0x9c,
+	0x68, 0xd6, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00,
+}
+
+// genesisMerkleRoot is the hash of the first transaction in the genesis block
+// for the main network.
+var genesisMerkleRoot = btcwire.ShaHash{
+	0x3b, 0xa3, 0xed, 0xfd, 0x7a, 0x7b, 0x12, 0xb2,
+	0x7a, 0xc7, 0x2c, 0x3e, 0x67, 0x76, 0x8f, 0x61,
+	0x7f, 0xc8, 0x1b, 0xc3, 0x88, 0x8a, 0x51, 0x32,
+	0x3a, 0x9f, 0xb8, 0xaa, 0x4b, 0x1e, 0x5e, 0x4a,
+}
+
+// genesisBlock defines the genesis block of the block chain which serves as the
+// public transaction ledger for the main network.
+var genesisBlock = btcwire.MsgBlock{
+	Header: btcwire.BlockHeader{
+		Version:    1,
+		PrevBlock:  btcwire.ShaHash{},        // 0000000000000000000000000000000000000000000000000000000000000000
+		MerkleRoot: genesisMerkleRoot,        // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
+		Timestamp:  time.Unix(0x495fab29, 0), // 2009-01-03 18:15:05 +0000 UTC
+		Bits:       0x1d00ffff,               // 486604799 [00000000ffff0000000000000000000000000000000000000000000000000000]
+		Nonce:      0x7c2bac1d,               // 2083236893
+	},
+	Transactions: []*btcwire.MsgTx{&genesisCoinbaseTx},
+}
+
+// regTestGenesisHash is the hash of the first block in the block chain for the
+// regression test network (genesis block).
+var regTestGenesisHash = btcwire.ShaHash{
+	0x06, 0x22, 0x6e, 0x46, 0x11, 0x1a, 0x0b, 0x59,
+	0xca, 0xaf, 0x12, 0x60, 0x43, 0xeb, 0x5b, 0xbf,
+	0x28, 0xc3, 0x4f, 0x3a, 0x5e, 0x33, 0x2a, 0x1f,
+	0xc7, 0xb2, 0xb7, 0x3c, 0xf1, 0x88, 0x91, 0x0f,
+}
+
+// regTestGenesisMerkleRoot is the hash of the first transaction in the genesis
+// block for the regression test network.  It is the same as the merkle root for
+// the main network.
+var regTestGenesisMerkleRoot = genesisMerkleRoot
+
+// regTestGenesisBlock defines the genesis block of the block chain which serves
+// as the public transaction ledger for the regression test network.
+var regTestGenesisBlock = btcwire.MsgBlock{
+	Header: btcwire.BlockHeader{
+		Version:    1,
+		PrevBlock:  btcwire.ShaHash{},        // 0000000000000000000000000000000000000000000000000000000000000000
+		MerkleRoot: regTestGenesisMerkleRoot, // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
+		Timestamp:  time.Unix(1296688602, 0), // 2011-02-02 23:16:42 +0000 UTC
+		Bits:       0x207fffff,               // 545259519 [7fffff0000000000000000000000000000000000000000000000000000000000]
+		Nonce:      2,
+	},
+	Transactions: []*btcwire.MsgTx{&genesisCoinbaseTx},
+}
+
+// testNet3GenesisHash is the hash of the first block in the block chain for the
+// test network (version 3).
+var testNet3GenesisHash = btcwire.ShaHash{
+	0x43, 0x49, 0x7f, 0xd7, 0xf8, 0x26, 0x95, 0x71,
+	0x08, 0xf4, 0xa3, 0x0f, 0xd9, 0xce, 0xc3, 0xae,
+	0xba, 0x79, 0x97, 0x20, 0x84, 0xe9, 0x0e, 0xad,
+	0x01, 0xea, 0x33, 0x09, 0x00, 0x00, 0x00, 0x00,
+}
+
+// testNet3GenesisMerkleRoot is the hash of the first transaction in the genesis
+// block for the test network (version 3).  It is the same as the merkle root
+// for the main network.
+var testNet3GenesisMerkleRoot = genesisMerkleRoot
+
+// testNet3GenesisBlock defines the genesis block of the block chain which
+// serves as the public transaction ledger for the test network (version 3).
+var testNet3GenesisBlock = btcwire.MsgBlock{
+	Header: btcwire.BlockHeader{
+		Version:    1,
+		PrevBlock:  btcwire.ShaHash{},         // 0000000000000000000000000000000000000000000000000000000000000000
+		MerkleRoot: testNet3GenesisMerkleRoot, // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
+		Timestamp:  time.Unix(1296688602, 0),  // 2011-02-02 23:16:42 +0000 UTC
+		Bits:       0x1d00ffff,                // 486604799 [00000000ffff0000000000000000000000000000000000000000000000000000]
+		Nonce:      0x18aea41a,                // 414098458
+	},
+	Transactions: []*btcwire.MsgTx{&genesisCoinbaseTx},
+}
diff --git a/genesis_test.go b/genesis_test.go
new file mode 100644
index 00000000..1f4f993e
--- /dev/null
+++ b/genesis_test.go
@@ -0,0 +1,224 @@
+// Copyright (c) 2014 Conformal Systems LLC.
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
+package btcnet_test
+
+import (
+	"bytes"
+	"github.com/conformal/btcnet"
+	"github.com/davecgh/go-spew/spew"
+	"testing"
+)
+
+// TestGenesisBlock tests the genesis block of the main network for validity by
+// checking the encoded bytes and hashes.
+func TestGenesisBlock(t *testing.T) {
+	// Encode the genesis block to raw bytes.
+	var buf bytes.Buffer
+	err := btcnet.MainNetParams.GenesisBlock.Serialize(&buf)
+	if err != nil {
+		t.Fatalf("TestGenesisBlock: %v", err)
+	}
+
+	// Ensure the encoded block matches the expected bytes.
+	if !bytes.Equal(buf.Bytes(), genesisBlockBytes) {
+		t.Fatalf("TestGenesisBlock: Genesis block does not appear valid - "+
+			"got %v, want %v", spew.Sdump(buf.Bytes()),
+			spew.Sdump(genesisBlockBytes))
+	}
+
+	// Check hash of the block against expected hash.
+	hash, err := btcnet.MainNetParams.GenesisBlock.BlockSha()
+	if err != nil {
+		t.Fatalf("BlockSha: %v", err)
+	}
+	if !btcnet.MainNetParams.GenesisHash.IsEqual(&hash) {
+		t.Fatalf("TestGenesisBlock: Genesis block hash does not "+
+			"appear valid - got %v, want %v", spew.Sdump(hash),
+			spew.Sdump(btcnet.MainNetParams.GenesisHash))
+	}
+}
+
+// TestRegTestGenesisBlock tests the genesis block of the regression test
+// network for validity by checking the encoded bytes and hashes.
+func TestRegTestGenesisBlock(t *testing.T) {
+	// Encode the genesis block to raw bytes.
+	var buf bytes.Buffer
+	err := btcnet.RegressionNetParams.GenesisBlock.Serialize(&buf)
+	if err != nil {
+		t.Fatalf("TestRegTestGenesisBlock: %v", err)
+	}
+
+	// Ensure the encoded block matches the expected bytes.
+	if !bytes.Equal(buf.Bytes(), regTestGenesisBlockBytes) {
+		t.Fatalf("TestRegTestGenesisBlock: Genesis block does not "+
+			"appear valid - got %v, want %v",
+			spew.Sdump(buf.Bytes()),
+			spew.Sdump(regTestGenesisBlockBytes))
+	}
+
+	// Check hash of the block against expected hash.
+	hash, err := btcnet.RegressionNetParams.GenesisBlock.BlockSha()
+	if err != nil {
+		t.Errorf("BlockSha: %v", err)
+	}
+	if !btcnet.RegressionNetParams.GenesisHash.IsEqual(&hash) {
+		t.Fatalf("TestRegTestGenesisBlock: Genesis block hash does "+
+			"not appear valid - got %v, want %v", spew.Sdump(hash),
+			spew.Sdump(btcnet.RegressionNetParams.GenesisHash))
+	}
+}
+
+// TestTestNet3GenesisBlock tests the genesis block of the test network (version
+// 3) for validity by checking the encoded bytes and hashes.
+func TestTestNet3GenesisBlock(t *testing.T) {
+	// Encode the genesis block to raw bytes.
+	var buf bytes.Buffer
+	err := btcnet.TestNet3Params.GenesisBlock.Serialize(&buf)
+	if err != nil {
+		t.Fatalf("TestTestNet3GenesisBlock: %v", err)
+	}
+
+	// Ensure the encoded block matches the expected bytes.
+	if !bytes.Equal(buf.Bytes(), testNet3GenesisBlockBytes) {
+		t.Fatalf("TestTestNet3GenesisBlock: Genesis block does not "+
+			"appear valid - got %v, want %v",
+			spew.Sdump(buf.Bytes()),
+			spew.Sdump(testNet3GenesisBlockBytes))
+	}
+
+	// Check hash of the block against expected hash.
+	hash, err := btcnet.TestNet3Params.GenesisBlock.BlockSha()
+	if err != nil {
+		t.Fatalf("BlockSha: %v", err)
+	}
+	if !btcnet.TestNet3Params.GenesisHash.IsEqual(&hash) {
+		t.Fatalf("TestTestNet3GenesisBlock: Genesis block hash does "+
+			"not appear valid - got %v, want %v", spew.Sdump(hash),
+			spew.Sdump(btcnet.TestNet3Params.GenesisHash))
+	}
+}
+
+// genesisBlockBytes are the wire encoded bytes for the genesis block of the
+// main network as of protocol version 60002.
+var genesisBlockBytes = []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, 0x29, 0xab, 0x5f, 0x49, /* |K.^J)._I| */
+	0xff, 0xff, 0x00, 0x1d, 0x1d, 0xac, 0x2b, 0x7c, /* |......+|| */
+	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, /* |.....|    */
+}
+
+// regTestGenesisBlockBytes are the wire encoded bytes for the genesis block of
+// the regression test network as of protocol version 60002.
+var regTestGenesisBlockBytes = []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, 0xda, 0xe5, 0x49, 0x4d, /* |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, /* |.....|    */
+}
+
+// testNet3GenesisBlockBytes are the wire encoded bytes for the genesis block of
+// the test network (version 3) as of protocol version 60002.
+var testNet3GenesisBlockBytes = []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, 0xda, 0xe5, 0x49, 0x4d, /* |K.^J)._I| */
+	0xff, 0xff, 0x00, 0x1d, 0x1a, 0xa4, 0xae, 0x18, /* |......+|| */
+	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 de07e3b6..778635f6 100644
--- a/params.go
+++ b/params.go
@@ -87,8 +87,8 @@ var MainNetParams = Params{
 	Net:  btcwire.MainNet,
 
 	// Chain parameters
-	GenesisBlock:           &btcwire.GenesisBlock,
-	GenesisHash:            &btcwire.GenesisHash,
+	GenesisBlock:           &genesisBlock,
+	GenesisHash:            &genesisHash,
 	PowLimit:               mainPowLimit,
 	PowLimitBits:           0x1d00ffff,
 	SubsidyHalvingInterval: 210000,
@@ -142,8 +142,8 @@ var RegressionNetParams = Params{
 	Net:  btcwire.TestNet,
 
 	// Chain parameters
-	GenesisBlock:           &btcwire.TestNetGenesisBlock,
-	GenesisHash:            &btcwire.TestNetGenesisHash,
+	GenesisBlock:           &regTestGenesisBlock,
+	GenesisHash:            &regTestGenesisHash,
 	PowLimit:               regressionPowLimit,
 	PowLimitBits:           0x207fffff,
 	SubsidyHalvingInterval: 150,
@@ -182,8 +182,8 @@ var TestNet3Params = Params{
 	Net:  btcwire.TestNet3,
 
 	// Chain parameters
-	GenesisBlock:           &btcwire.TestNet3GenesisBlock,
-	GenesisHash:            &btcwire.TestNet3GenesisHash,
+	GenesisBlock:           &testNet3GenesisBlock,
+	GenesisHash:            &testNet3GenesisHash,
 	PowLimit:               testNet3PowLimit,
 	PowLimitBits:           0x1d00ffff,
 	SubsidyHalvingInterval: 210000,