app: fix core test

9 files changed, 151 insertions, 42 deletions

diff --git a/core/blockchain.go b/core/blockchain.go
index c44d2633a..79e0b2a02 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -203,7 +203,83 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, chainConfig *par
 		addressCounter:  make(map[uint32]map[common.Address]uint64),
 		chainLastHeight: make(map[uint32]uint64),
 	}
-	bc.SetValidator(NewDexonBlockValidator(chainConfig, bc, engine))
+	bc.SetValidator(NewBlockValidator(chainConfig, bc, engine))
+	bc.SetProcessor(NewStateProcessor(chainConfig, bc, engine))
+
+	var err error
+	bc.hc, err = NewHeaderChain(db, chainConfig, engine, bc.getProcInterrupt)
+	if err != nil {
+		return nil, err
+	}
+	bc.genesisBlock = bc.GetBlockByNumber(0)
+	if bc.genesisBlock == nil {
+		return nil, ErrNoGenesis
+	}
+	if err := bc.loadLastState(); err != nil {
+		return nil, err
+	}
+	// Check the current state of the block hashes and make sure that we do not have any of the bad blocks in our chain
+	for hash := range BadHashes {
+		if header := bc.GetHeaderByHash(hash); header != nil {
+			// get the canonical block corresponding to the offending header's number
+			headerByNumber := bc.GetHeaderByNumber(header.Number.Uint64())
+			// make sure the headerByNumber (if present) is in our current canonical chain
+			if headerByNumber != nil && headerByNumber.Hash() == header.Hash() {
+				log.Error("Found bad hash, rewinding chain", "number", header.Number, "hash", header.ParentHash)
+				bc.SetHead(header.Number.Uint64() - 1)
+				log.Error("Chain rewind was successful, resuming normal operation")
+			}
+		}
+	}
+
+	// Set genesis round height mapping.
+	bc.roundHeightMap.Store(0, 0)
+
+	// Take ownership of this particular state
+	go bc.update()
+	return bc, nil
+}
+
+func NewBlockChainWithDexonValidator(db ethdb.Database, cacheConfig *CacheConfig, chainConfig *params.ChainConfig, engine consensus.Engine, vmConfig vm.Config, shouldPreserve func(block *types.Block) bool) (*BlockChain, error) {
+	if cacheConfig == nil {
+		cacheConfig = &CacheConfig{
+			TrieNodeLimit: 256 * 1024 * 1024,
+			TrieTimeLimit: 5 * time.Minute,
+		}
+	}
+	bodyCache, _ := lru.New(bodyCacheLimit)
+	bodyRLPCache, _ := lru.New(bodyCacheLimit)
+	receiptsCache, _ := lru.New(receiptsCacheLimit)
+	blockCache, _ := lru.New(blockCacheLimit)
+	futureBlocks, _ := lru.New(maxFutureBlocks)
+	badBlocks, _ := lru.New(badBlockLimit)
+
+	bc := &BlockChain{
+		chainConfig:   chainConfig,
+		cacheConfig:   cacheConfig,
+		db:            db,
+		triegc:        prque.New(nil),
+		stateCache:    state.NewDatabase(db),
+		quit:          make(chan struct{}),
+		bodyCache:     bodyCache,
+		bodyRLPCache:  bodyRLPCache,
+		receiptsCache: receiptsCache,
+		blockCache:    blockCache,
+		futureBlocks:  futureBlocks,
+		engine:        engine,
+		vmConfig:      vmConfig,
+		badBlocks:     badBlocks,
+		pendingBlocks: make(map[uint64]struct {
+			block    *types.Block
+			receipts types.Receipts
+		}),
+		confirmedBlocks: make(map[uint32]map[coreCommon.Hash]*blockInfo),
+		addressNonce:    make(map[uint32]map[common.Address]uint64),
+		addressCost:     make(map[uint32]map[common.Address]*big.Int),
+		addressCounter:  make(map[uint32]map[common.Address]uint64),
+		chainLastHeight: make(map[uint32]uint64),
+	}
+	bc.SetValidator(NewBlockValidator(chainConfig, bc, engine))
 	bc.SetProcessor(NewStateProcessor(chainConfig, bc, engine))
 
 	var err error
diff --git a/core/blockchain_test.go b/core/blockchain_test.go
index 72b21034b..bbaaf5e6d 100644
--- a/core/blockchain_test.go
+++ b/core/blockchain_test.go
@@ -47,10 +47,13 @@ var (
 // header only chain.
 func newCanonical(engine consensus.Engine, n int, full bool) (ethdb.Database, *BlockChain, error) {
 	var (
-		db      = ethdb.NewMemDatabase()
-		genesis = new(Genesis).MustCommit(db)
+		db = ethdb.NewMemDatabase()
+		g  = new(Genesis)
 	)
 
+	g.Config = params.TestnetChainConfig
+	genesis := g.MustCommit(db)
+
 	// Initialize a fresh chain with only a genesis block
 	blockchain, _ := NewBlockChain(db, nil, params.AllEthashProtocolChanges, engine, vm.Config{}, nil)
 	// Create and inject the requested chain
@@ -1275,9 +1278,13 @@ func TestEIP155Transition(t *testing.T) {
 			Config: &params.ChainConfig{ChainID: big.NewInt(1), EIP155Block: big.NewInt(2), HomesteadBlock: new(big.Int)},
 			Alloc:  GenesisAlloc{address: {Balance: funds}, deleteAddr: {Balance: new(big.Int)}},
 		}
-		genesis = gspec.MustCommit(db)
 	)
 
+	dexConf := new(params.DexconConfig)
+	dexConf.BlockReward = new(big.Int)
+	gspec.Config.Dexcon = dexConf
+	genesis := gspec.MustCommit(db)
+
 	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer blockchain.Stop()
 
@@ -1383,8 +1390,10 @@ func TestEIP161AccountRemoval(t *testing.T) {
 			},
 			Alloc: GenesisAlloc{address: {Balance: funds}},
 		}
-		genesis = gspec.MustCommit(db)
 	)
+
+	gspec.Config.Dexcon = params.TestChainConfig.Dexcon
+	genesis := gspec.MustCommit(db)
 	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer blockchain.Stop()
 
@@ -1442,7 +1451,10 @@ func TestBlockchainHeaderchainReorgConsistency(t *testing.T) {
 	engine := ethash.NewFaker()
 
 	db := ethdb.NewMemDatabase()
-	genesis := new(Genesis).MustCommit(db)
+	gspec := &Genesis{
+		Config: params.TestnetChainConfig,
+	}
+	genesis := gspec.MustCommit(db)
 	blocks, _ := GenerateChain(params.TestChainConfig, genesis, engine, db, 64, func(i int, b *BlockGen) { b.SetCoinbase(common.Address{1}) })
 
 	// Generate a bunch of fork blocks, each side forking from the canonical chain
@@ -1458,7 +1470,7 @@ func TestBlockchainHeaderchainReorgConsistency(t *testing.T) {
 	// Import the canonical and fork chain side by side, verifying the current block
 	// and current header consistency
 	diskdb := ethdb.NewMemDatabase()
-	new(Genesis).MustCommit(diskdb)
+	gspec.MustCommit(diskdb)
 
 	chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{}, nil)
 	if err != nil {
@@ -1487,7 +1499,10 @@ func TestTrieForkGC(t *testing.T) {
 	engine := ethash.NewFaker()
 
 	db := ethdb.NewMemDatabase()
-	genesis := new(Genesis).MustCommit(db)
+	gspec := &Genesis{
+		Config: params.TestnetChainConfig,
+	}
+	genesis := gspec.MustCommit(db)
 	blocks, _ := GenerateChain(params.TestChainConfig, genesis, engine, db, 2*triesInMemory, func(i int, b *BlockGen) { b.SetCoinbase(common.Address{1}) })
 
 	// Generate a bunch of fork blocks, each side forking from the canonical chain
@@ -1502,7 +1517,7 @@ func TestTrieForkGC(t *testing.T) {
 	}
 	// Import the canonical and fork chain side by side, forcing the trie cache to cache both
 	diskdb := ethdb.NewMemDatabase()
-	new(Genesis).MustCommit(diskdb)
+	gspec.MustCommit(diskdb)
 
 	chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{}, nil)
 	if err != nil {
@@ -1533,7 +1548,10 @@ func TestLargeReorgTrieGC(t *testing.T) {
 	engine := ethash.NewFaker()
 
 	db := ethdb.NewMemDatabase()
-	genesis := new(Genesis).MustCommit(db)
+	gspec := &Genesis{
+		Config: params.TestnetChainConfig,
+	}
+	genesis := gspec.MustCommit(db)
 
 	shared, _ := GenerateChain(params.TestChainConfig, genesis, engine, db, 64, func(i int, b *BlockGen) { b.SetCoinbase(common.Address{1}) })
 	original, _ := GenerateChain(params.TestChainConfig, shared[len(shared)-1], engine, db, 2*triesInMemory, func(i int, b *BlockGen) { b.SetCoinbase(common.Address{2}) })
@@ -1541,7 +1559,7 @@ func TestLargeReorgTrieGC(t *testing.T) {
 
 	// Import the shared chain and the original canonical one
 	diskdb := ethdb.NewMemDatabase()
-	new(Genesis).MustCommit(diskdb)
+	gspec.MustCommit(diskdb)
 
 	chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{}, nil)
 	if err != nil {
diff --git a/core/chain_makers_test.go b/core/chain_makers_test.go
index c240ed824..cb01ae0c9 100644
--- a/core/chain_makers_test.go
+++ b/core/chain_makers_test.go
@@ -42,7 +42,7 @@ func ExampleGenerateChain() {
 
 	// Ensure that key1 has some funds in the genesis block.
 	gspec := &Genesis{
-		Config: &params.ChainConfig{HomesteadBlock: new(big.Int)},
+		Config: &params.ChainConfig{HomesteadBlock: new(big.Int), Dexcon: params.TestChainConfig.Dexcon},
 		Alloc:  GenesisAlloc{addr1: {Balance: big.NewInt(1000000)}},
 	}
 	genesis := gspec.MustCommit(db)
@@ -160,7 +160,7 @@ func ExampleGenerateChainWithRoundChange() {
 	// This call generates a chain of 1000 blocks. The function runs for
 	// each block and adds different features to gen based on the
 	// block index.
-	chain, _ := GenerateChainWithRoundChange(gspec.Config, genesis, ethash.NewFaker(), db, 1000, func(i int, gen *BlockGen) {
+	chain, _ := GenerateChainWithRoundChange(gspec.Config, genesis, ethash.NewFaker(), db, 5, func(i int, gen *BlockGen) {
 		switch i {
 		case 0:
 			// In block 1, addr1 sends addr2 some ether.
@@ -189,7 +189,7 @@ func ExampleGenerateChainWithRoundChange() {
 	}, nodeSet, 30)
 
 	// Import the chain. This runs all block validation rules.
-	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
+	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil)
 	defer blockchain.Stop()
 
 	if i, err := blockchain.InsertChain(chain); err != nil {
diff --git a/core/dao_test.go b/core/dao_test.go
index f7b8d8576..785aab5f2 100644
--- a/core/dao_test.go
+++ b/core/dao_test.go
@@ -34,6 +34,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
 	// Generate a common prefix for both pro-forkers and non-forkers
 	db := ethdb.NewMemDatabase()
 	gspec := new(Genesis)
+	gspec.Config = params.TestChainConfig
 	genesis := gspec.MustCommit(db)
 	prefix, _ := GenerateChain(params.TestChainConfig, genesis, ethash.NewFaker(), db, int(forkBlock.Int64()-1), func(i int, gen *BlockGen) {})
 
diff --git a/core/evm.go b/core/evm.go
index 7e25e1d52..5e8cf9063 100644
--- a/core/evm.go
+++ b/core/evm.go
@@ -18,6 +18,7 @@ package core
 
 import (
 	"math/big"
+	"reflect"
 	"sync"
 
 	"github.com/dexon-foundation/dexon/common"
@@ -48,6 +49,12 @@ func NewEVMContext(msg Message, header *types.Header, chain ChainContext, author
 	} else {
 		beneficiary = *author
 	}
+
+	var roundHeight sync.Map
+	if !reflect.ValueOf(chain).IsNil() {
+		roundHeight = chain.GetRoundHeightMap()
+	}
+
 	return vm.Context{
 		CanTransfer: CanTransfer,
 		Transfer:    Transfer,
@@ -58,7 +65,7 @@ func NewEVMContext(msg Message, header *types.Header, chain ChainContext, author
 		Time:        new(big.Int).SetUint64(header.Time),
 		Randomness:  header.Randomness,
 		Difficulty:  new(big.Int).Set(header.Difficulty),
-		RoundHeight: chain.GetRoundHeightMap(),
+		RoundHeight: roundHeight,
 		GasLimit:    header.GasLimit,
 		GasPrice:    new(big.Int).Set(msg.GasPrice()),
 	}
diff --git a/core/genesis_test.go b/core/genesis_test.go
index 48cfd0db5..288883af2 100644
--- a/core/genesis_test.go
+++ b/core/genesis_test.go
@@ -43,16 +43,16 @@ func TestDefaultGenesisBlock(t *testing.T) {
 
 func TestSetupGenesis(t *testing.T) {
 	var (
-		customghash = common.HexToHash("0x89c99d90b79719238d2645c7642f2c9295246e80775b38cfd162b696817fbd50")
+		customghash = common.HexToHash("0xb6ba0591a77fc67883bb23a0463ecacede39e63176ec65fd137466c4cda91af5")
 		customg     = Genesis{
-			Config: &params.ChainConfig{HomesteadBlock: big.NewInt(3)},
+			Config: &params.ChainConfig{HomesteadBlock: big.NewInt(3), Dexcon: params.TestChainConfig.Dexcon},
 			Alloc: GenesisAlloc{
 				{1}: {Balance: big.NewInt(1), Storage: map[common.Hash]common.Hash{{1}: {1}}},
 			},
 		}
 		oldcustomg = customg
 	)
-	oldcustomg.Config = &params.ChainConfig{HomesteadBlock: big.NewInt(2)}
+	oldcustomg.Config = &params.ChainConfig{HomesteadBlock: big.NewInt(2), Dexcon: params.TestChainConfig.Dexcon}
 	tests := []struct {
 		name       string
 		fn         func(ethdb.Database) (*params.ChainConfig, common.Hash, error)
diff --git a/core/tx_pool_test.go b/core/tx_pool_test.go
index 0ef926d1d..2cc6c7903 100644
--- a/core/tx_pool_test.go
+++ b/core/tx_pool_test.go
@@ -47,6 +47,7 @@ func init() {
 type testBlockChain struct {
 	statedb            *state.StateDB
 	gasLimit           uint64
+	chainHeadFeed      *event.Feed
 	blockConfirmedFeed *event.Feed
 }
 
@@ -64,6 +65,10 @@ func (bc *testBlockChain) StateAt(common.Hash) (*state.StateDB, error) {
 	return bc.statedb, nil
 }
 
+func (bc *testBlockChain) SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription {
+	return bc.chainHeadFeed.Subscribe(ch)
+}
+
 func (bc *testBlockChain) SubscribeBlockConfirmedEvent(ch chan<- BlockConfirmedEvent) event.Subscription {
 	return bc.blockConfirmedFeed.Subscribe(ch)
 }
@@ -79,7 +84,7 @@ func pricedTransaction(nonce uint64, gaslimit uint64, gasprice *big.Int, key *ec
 
 func setupTxPool() (*TxPool, *ecdsa.PrivateKey) {
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	key, _ := crypto.GenerateKey()
 	pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain)
@@ -187,7 +192,7 @@ func TestStateChangeDuringTransactionPoolReset(t *testing.T) {
 
 	// setup pool with 2 transaction in it
 	statedb.SetBalance(address, new(big.Int).SetUint64(params.Ether))
-	blockchain := &testChain{&testBlockChain{statedb, 1000000000, new(event.Feed)}, address, &trigger}
+	blockchain := &testChain{&testBlockChain{statedb, 1000000000, new(event.Feed), new(event.Feed)}, address, &trigger}
 
 	tx0 := transaction(0, 100000, key)
 	tx1 := transaction(1, 100000, key)
@@ -338,7 +343,7 @@ func TestTransactionChainFork(t *testing.T) {
 		statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
 		statedb.AddBalance(addr, big.NewInt(100000000000000))
 
-		pool.chain = &testBlockChain{statedb, 1000000, new(event.Feed)}
+		pool.chain = &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 		pool.lockedReset(nil, nil)
 	}
 	resetState()
@@ -367,7 +372,7 @@ func TestTransactionDoubleNonce(t *testing.T) {
 		statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
 		statedb.AddBalance(addr, big.NewInt(100000000000000))
 
-		pool.chain = &testBlockChain{statedb, 1000000, new(event.Feed)}
+		pool.chain = &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 		pool.lockedReset(nil, nil)
 	}
 	resetState()
@@ -555,7 +560,7 @@ func TestTransactionPostponing(t *testing.T) {
 
 	// Create the pool to test the postponing with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain)
 	defer pool.Stop()
@@ -770,7 +775,7 @@ func testTransactionQueueGlobalLimiting(t *testing.T, nolocals bool) {
 
 	// Create the pool to test the limit enforcement with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	config := testTxPoolConfig
 	config.NoLocals = nolocals
@@ -858,7 +863,7 @@ func testTransactionQueueTimeLimiting(t *testing.T, nolocals bool) {
 
 	// Create the pool to test the non-expiration enforcement
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	config := testTxPoolConfig
 	config.Lifetime = time.Second
@@ -1012,7 +1017,7 @@ func TestTransactionPendingGlobalLimiting(t *testing.T) {
 
 	// Create the pool to test the limit enforcement with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	config := testTxPoolConfig
 	config.GlobalSlots = config.AccountSlots * 10
@@ -1058,7 +1063,7 @@ func TestTransactionCapClearsFromAll(t *testing.T) {
 
 	// Create the pool to test the limit enforcement with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	config := testTxPoolConfig
 	config.AccountSlots = 2
@@ -1092,7 +1097,7 @@ func TestTransactionPendingMinimumAllowance(t *testing.T) {
 
 	// Create the pool to test the limit enforcement with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	config := testTxPoolConfig
 	config.GlobalSlots = 1
@@ -1140,7 +1145,7 @@ func TestTransactionPoolRepricing(t *testing.T) {
 
 	// Create the pool to test the pricing enforcement with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain)
 	defer pool.Stop()
@@ -1261,7 +1266,7 @@ func TestTransactionPoolRepricingKeepsLocals(t *testing.T) {
 
 	// Create the pool to test the pricing enforcement with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain)
 	defer pool.Stop()
@@ -1323,7 +1328,7 @@ func TestTransactionPoolUnderpricing(t *testing.T) {
 
 	// Create the pool to test the pricing enforcement with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	config := testTxPoolConfig
 	config.GlobalSlots = 2
@@ -1429,7 +1434,7 @@ func TestTransactionPoolStableUnderpricing(t *testing.T) {
 
 	// Create the pool to test the pricing enforcement with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	config := testTxPoolConfig
 	config.GlobalSlots = 128
@@ -1495,7 +1500,7 @@ func TestTransactionReplacement(t *testing.T) {
 
 	// Create the pool to test the pricing enforcement with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain)
 	defer pool.Stop()
@@ -1589,7 +1594,7 @@ func testTransactionJournaling(t *testing.T, nolocals bool) {
 
 	// Create the original pool to inject transaction into the journal
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	config := testTxPoolConfig
 	config.NoLocals = nolocals
@@ -1631,7 +1636,7 @@ func testTransactionJournaling(t *testing.T, nolocals bool) {
 	// Terminate the old pool, bump the local nonce, create a new pool and ensure relevant transaction survive
 	pool.Stop()
 	statedb.SetNonce(crypto.PubkeyToAddress(local.PublicKey), 1)
-	blockchain = &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain = &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	pool = NewTxPool(config, params.TestChainConfig, blockchain)
 
@@ -1658,7 +1663,7 @@ func testTransactionJournaling(t *testing.T, nolocals bool) {
 	pool.Stop()
 
 	statedb.SetNonce(crypto.PubkeyToAddress(local.PublicKey), 1)
-	blockchain = &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain = &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 	pool = NewTxPool(config, params.TestChainConfig, blockchain)
 
 	pending, queued = pool.Stats()
@@ -1687,7 +1692,7 @@ func TestTransactionStatusCheck(t *testing.T) {
 
 	// Create the pool to test the status retrievals with
 	statedb, _ := state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
-	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed), new(event.Feed)}
 
 	pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain)
 	defer pool.Stop()
diff --git a/dex/backend.go b/dex/backend.go
index 74aea8325..3b727adde 100644
--- a/dex/backend.go
+++ b/dex/backend.go
@@ -134,7 +134,8 @@ func New(ctx *node.ServiceContext, config *Config) (*Dexon, error) {
 		}
 		cacheConfig = &core.CacheConfig{Disabled: config.NoPruning, TrieCleanLimit: config.TrieCleanCache, TrieDirtyLimit: config.TrieDirtyCache, TrieTimeLimit: config.TrieTimeout}
 	)
-	dex.blockchain, err = core.NewBlockChain(chainDb, cacheConfig, dex.chainConfig, dex.engine, vmConfig, nil)
+	dex.blockchain, err = core.NewBlockChainWithDexonValidator(chainDb, cacheConfig,
+		dex.chainConfig, dex.engine, vmConfig, nil)
 
 	// Rewind the chain in case of an incompatible config upgrade.
 	if compat, ok := genesisErr.(*params.ConfigCompatError); ok {
diff --git a/params/config.go b/params/config.go
index b247b62d3..e080f1572 100644
--- a/params/config.go
+++ b/params/config.go
@@ -26,8 +26,8 @@ import (
 
 // Genesis hashes to enforce below configs on.
 var (
-	MainnetGenesisHash = common.HexToHash("0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3")
-	TestnetGenesisHash = common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d")
+	MainnetGenesisHash = common.HexToHash("0xc333fc9bcbb59ad2646fff9fd253559b144340bd27a3851cc7737ff73e405e91")
+	TestnetGenesisHash = common.HexToHash("0x744c925a373bbbc4b46adf0e925f1cd06d587e89bc9db8260b2163238cd980ef")
 )
 
 var (
@@ -113,7 +113,7 @@ var (
 	//
 	// This configuration is intentionally not using keyed fields to force anyone
 	// adding flags to the config to also have to set these fields.
-	AllEthashProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, new(EthashConfig), nil, nil}
+	AllEthashProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, new(EthashConfig), nil, new(DexconConfig)}
 
 	// AllCliqueProtocolChanges contains every protocol change (EIPs) introduced
 	// and accepted by the Ethereum core developers into the Clique consensus.
@@ -122,7 +122,7 @@ var (
 	// adding flags to the config to also have to set these fields.
 	AllCliqueProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, &CliqueConfig{Period: 0, Epoch: 30000}, nil}
 
-	TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, new(EthashConfig), nil, &DexconConfig{}}
+	TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, new(EthashConfig), nil, TestnetChainConfig.Dexcon}
 	TestRules       = TestChainConfig.Rules(new(big.Int))
 )
 
@@ -388,6 +388,7 @@ func isForked(s, head *big.Int) bool {
 	if s == nil || head == nil {
 		return false
 	}
+
 	return s.Cmp(head) <= 0
 }