fix

Author: Lukasz Gasior

src/main/resources/blockchain/default-genesis.json

@@ -4,7 +4,7 @@
   "gasLimit": "0x1388",
   "nonce": "0x0000000000000042",
   "ommersHash": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
-  "timestamp": 0,
+  "timestamp": "0x0",
   "coinbase": "0x0000000000000000000000000000000000000000",
   "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
   "alloc": {

src/main/scala/io/iohk/ethereum/blockchain/data/GenesisDataLoader.scala

@@ -101,9 +101,9 @@ class GenesisDataLoader(dataSource: DataSource, blockchain: Blockchain) extends
       number = 0,
       gasLimit = BigInt(genesisData.gasLimit.replace("0x", ""), 16),
       gasUsed = 0,
-      unixTimestamp = genesisData.timestamp,
+      unixTimestamp = BigInt(genesisData.timestamp.replace("0x", ""), 16).toLong,
       extraData = genesisData.extraData,
-      mixHash = genesisData.mixHash,
+      mixHash = genesisData.mixHash.getOrElse(zeros(hashLength)),
       nonce = genesisData.nonce)
 
     blockchain.getBlockHeaderByNumber(0) match {
@@ -135,7 +135,10 @@ object GenesisDataLoader {
     implicit object ByteStringJsonFormat extends RootJsonFormat[ByteString] {
       def read(value: JsValue): ByteString = value match {
         case s: JsString =>
-          val inp = s.value.replace("0x", "")
+          val noPrefix = s.value.replace("0x", "")
+          val inp =
+            if (noPrefix.length % 2 == 0) noPrefix
+            else "0" ++ noPrefix
           Try(ByteString(Hex.decode(inp))) match {
             case Success(bs) => bs
             case Failure(ex) => deserializationError("Cannot parse hex string: " + s)

src/main/scala/io/iohk/ethereum/blockchain/data/genesis.scala

@@ -6,10 +6,10 @@ case class AllocAccount(balance: String)
 
 case class GenesisData(
     nonce: ByteString,
-    mixHash: ByteString,
+    mixHash: Option[ByteString],
     difficulty: String,
     extraData: ByteString,
     gasLimit: String,
     coinbase: ByteString,
-    timestamp: Long,
+    timestamp: String,
     alloc: Map[String, AllocAccount])